Faculty Profiles - KI Wing Hung | The Hong Kong University of Science and Technology

Wing Hung KI
暨永雄

PhD in Electrical Engineering
University of California, Los Angeles, 1995

Professor
Department of Electronic and Computer Engineering

(852) 2358 8516
eeki@ust.hk
Room 2520
Personal Web

Google Scholar

gDOU_mIAAAAJ

ORCID

0000-0002-7873-5643

Scopus ID

7004446837

Research Interest Publications Projects Teaching Assignment RPG Supervision Space used

Research Interest

Switch mode and switched-capacitor power converters
Low dropout regulators
Analog integrated circuits

Publications

All Years 313 2024 8 2023 9 2022 12 2021 10 2020 14 2019 16 2018 244

2024 8

A 13.56-MHz Single-Input Dual-Output Wireless Power and Data Transfer System for Bio-Implants

IEEE Journal of Solid-State Circuits, March 2024, article number 10473006, p. 1-11
Liu, Yang; Yao, Yuan; Ki, Wing Hung
Article

Analysis of Off-Resonant Flexible Tertiary Coils in Biomedical Implants for Back Telemetry Detection

IEEE Transactions on Circuits and Systems I: Regular Papers, July 2024, article number 10607967, p. 1-13
Sarkar, Sayan; Yao, Yuan; Ki, Wing Hung; Tsui, Chi Ying
Article

A 24V-to-1V Hybrid Converter with Adaptive Dead Time Control for Point-of-Load Applications

Proceedings - IEEE International Symposium on Circuits and Systems / IEEE. Piscataway, NJ : IEEE, 2024, article number 10558126
Chang, Guozhen; Liu, Yang; Ki, Wing Hung
Conference paper

A 73.3% Peak Efficiency Isolated DC-DC Converter with Gap-Time Modulation using Pseudo-Hysteresis Control for -12kV/μs Common-Mode Transient Immunity

2024 IEEE Custom Integrated Circuits Conference (CICC) / IEEE. Piscataway, NJ : IEEE, 2024, Article number 10529056
Liu, Yang; Yao, Yuan; Cheng, Lin; Ki, Wing-Hung
Conference paper

A Wide Current Range and Fast Transient Flipped Voltage Follower Based Low Dropout Regulator

Ki, Wing Hung; Law, Man Kay
Conference paper

Adaptive Digitally-Controlled Active Rectifier-Based Receiver for Bioimplants

Proceedings - IEEE International Symposium on Circuits and Systems / Institute of Electrical and Electronics Engineers Inc.. New York, USA : Institute of Electrical and Electronics Engineers Inc., 2024, p. 1-5, Article number 10558205
Sarkar, Sayan; Yao, Yuan; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

D² Buck Converter with Delay-Insensitive Response and Adaptive On-Time Extension During Load Transient

Proceedings - IEEE International Symposium on Circuits and Systems / Institute of Electrical and Electronics Engineers Inc.. New York, USA : Institute of Electrical and Electronics Engineers Inc., 2024, p. 1-4, Article number 10558657
Zhu, Lingfeng; Ki, Wing Hung; Zhong, Yue; Ma, Xiaofei; Jiang, Junmin
Conference paper

Time Domain Analysis of Secondary Stage with Series Resonance Driving Rectifier Load

Proceedings - IEEE International Symposium on Circuits and Systems / Institute of Electrical and Electronics Engineers Inc.. New York, USA : Institute of Electrical and Electronics Engineers Inc., 2024, p. 1-4, Article number 10558705
Ki, Wing Hung; Yao, Yuan; Tsui, Chi Ying
Conference paper

2023 9

A 27 W Wireless Power Transceiver With Compact Single-Stage Regulated Class-E Architecture and Adaptive ZVS Control

IEEE Journal of Solid-State Circuits, November 2023, article number 10335186, p. 1-12
Ma, Xiaofei; Ki, Wing Hung; Lu, Yan
Article

A Flexible Thin-Film Inductor for High-Efficiency Wireless Power Transfer

IEEE Electron Device Letters, v. 44, (3), March 2023, article number 10032542, p. 504-507
Yao, Yuan; Qiu, Xing; Cheng, Yuanjie; Lo, Chi Chuen; Lee, Ricky Shi-wei; Ki, Wing Hung; Tsui, Chi Ying
Article

A Fully-Integrated Micro-Display System With Hybrid Voltage Regulator

IEEE Journal on Emerging and Selected Topics in Circuits and Systems, v. 13, (2), June 2023, article number 10107970, p. 605-616
Jiang, Junmin; Zhang, Xu; Liu, Xun; Liu, Zhaojun; Sun, Liusheng; Yuen, Shing Hin; Chong, Wing Cheung; Ki, Wing Hung; Yue, Chik; Lau, Kei May
Article

A Self-Clocked and Variation-Tolerant Unified Voltage-and-Frequency Regulator for In-Order Executed Digital Loads

IEEE Transactions on Circuits and Systems I: Regular Papers, August 2023, article number 10230861, p. 1-14
Wang, Xuliang; Liu, Xiaosen; Ki, Wing-Hung
Article

Analysis and Prevention of Coupling-Dependent Data Flipping in Wireless Power Transfer Systems

IEEE Transactions on Power Electronics, v. 38, (8), August 2023, article number 10122992, p. 10460-10469
Yao, Yuan; Sarkar, Sayan; Ki, Wing Hung; Tsui, Chi Ying
Article

Energy-Efficient Dual-Node-Upset-Recoverable 12T SRAM for Low-Power Aerospace Applications

IEEE Access, v. 11, 2023, p. 20184-20195
Pal, Soumitra; Chowdary, Gajendranath; Ki, Wing-Hung; Tsui, Chi-Ying
Article

Fully Integrated Switched-Capacitor Power Converters

Analog and Mixed-Signal Circuits in Nanoscale CMOS / edited by Rui Paulo da Silva Martins, Pui-In Mak. Cham, Switzerland : Springer, 2023, p. 253-280
Jiang, Junmin; Lu, Yan; Ki, Wing Hung; Martins, R.P.
Book chapter

4C 3-Level Hybrid Buck Converter for 12~48V-to-1V Point-of-Load Applications

2023 IEEE Custom Integrated Circuits Conference (CICC) / IEEE. Piscataway, USA : IEEE, 2023, article number 10121260
Lam, Hon Piu; Ki, Wing Hung; Mok, Kwok Tai Philip
Conference paper

A Primary Driver with Real-Time Resonance Tracking for Wireless-Powered Implantable Medical Devices

2023 IEEE Asian Solid-State Circuits Conference, A-SSCC 2023, December 2023, article number 10347922
Meng, Xiaodong; Li, Xing; Yao, Yuan; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

2022 12

A 10T Soft-Error-Immune SRAM with Multi-node Upset Recovery for Low-Power Space Applications

IEEE Transactions on Device and Materials Reliability, v. 22, (1), 1 March 2022, article number 9698116, p. 85-88
Pal, Soumitra; Sahay, Shubbam; Ki, Wing Hung; Tsui, Chi Ying
Article

Fully-Integrated Switched-Capacitor Converter With Capacitor Bridging For Improved Current Density

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 69, (10), October 2022, article number 9790872, p. 4063-4067
Zhong, Yue; Ki, Wing-Hung; Jiang, Junmin
Article

Soft-Error-Aware Read-Stability-Enhanced Low-Power 12T SRAM With Multi-Node Upset Recoverability for Aerospace Applications

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 69, (4), April 2022, p. 1560-1570
Pal, Soumitra; Ki, Wing Hung; Tsui, Chi Ying
Article

Ultra-High PSR Output-Capacitor-Free Adaptively-Biased 2-Power-Transistor LDO with 200-mV Dropout

IEEE Solid-State Circuits Letters, v. 5, 3 May 2022, article number 9766420, p. 106-109
Han, Xu; Ki, Wing Hung; Wu, Lianbo; Gao, Yuan
Article

A 16-bit Encrypted On-chip Embedded System for Implantable Medical Devices

2022 IEEE International Symposium on Circuits and Systems (ISCAS) / IEEE. Piscataway, NJ : IEEE, 2022, p. 195-199, article number 9937423
Sarkar, Sayan; Jiang, Jingbo; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

A 27W D2D Wireless Power Transfer System with Compact Single-Stage Regulated Class-E Architecture and Adaptive ZVS Control

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, v. 2022-February, February 2022, article number 9731724, p. 238-240
Ma, Xiaofei; Lu, Yan; Ki, Wing Hung
Conference paper

A 65-nm Clock-Domain-Crossing Controller for Digital LDO Regulator with 1.7-ns Response Time

APCCAS 2022 - 2022 IEEE Asia Pacific Conference on Circuits and Systems / IEEE. Piscataway, NJ : IEEE, 2023, p. 284-288, article number 10090264
Wang, Xuliang; Ki, Wing Hung; Mok, Kwok Tai Philip
Conference paper

A self-clocked TDC-based unified clock and voltage regulator with replica frequency-locked loop and hysteresis switching in 65nm CMOS

2022 IEEE Asian Solid-State Circuits Conference, A-SSCC 2022 - Proceedings / IEEE. Piscataway, NJ : IEEE, 2022, p. 14-16, Article number 9980639
Wang, Xuliang; Ki, Wing Hung; Mok, Kwok Tai Philip
Conference paper

Design Strategy of Off-Resonant Tertiary Coils for Uplink Detection in Biomedical Implants

2022 IEEE International Symposium on Circuits and Systems (ISCAS) / IEEE. Piscataway, NJ : IEEE, 2022, p. 156-159, article number 9937926
Sarkar, Sayan; Yao, Yuan; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Mathematical Analysis of Duty Cycle Variation based Wireless Power Control Technique

2022 Wireless Power Week, WPW 2022 - Proceedings, 2022, p. 599-604
Sarkar, Sayan; Yao, Yuan; Ki, Wing Hung
Conference paper

Partitioning Scheme and Performance Analysis of Distributed Digital Low-Dropout Regulators in SoC

Proceedings - IEEE International Symposium on Circuits and Systems, v. 2022-May, November 2022, article number 9937209, p. 2520-2524
Wang, Xuliang; Ki, Wing-Hung
Conference paper

Split Frequency and Load-Shift Keying Based Bi-directional Data Transfer Technique in Wireless Implantable Medical Devices

44th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, v. 2022, July 2022, article number 9871738, p. 2464-2470
Sarkar, Sayan; Yao, Yuan; Ki, Wing Hung
Conference paper

2021 10

A 6.78 MHz Single-Stage Wireless Power Transmitter Using a 3-Mode Zero-Voltage Switching Class-D PA

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 68, (6), June 2021, article number 9417221, p. 2736-2748
Ge, Xinyuan; Cheng, Lin; Yao, Yuan; Ki, Wing Hung
Article

An Adaptively-Biased Output-Capacitor-Free Low-Dropout Regulator with Supply-Ripple-Subtraction and Pole-Tracking-Compensation

IEEE Transactions on Power Electronics, V. 36, (11), November 2021, article number 9422175, p. 12795-12804
Han, Xu; Wu, Lianbo; Gao, Yuan; Ki, Wing Hung
Article

Circuit Techniques for High Efficiency Fully-Integrated Switched-Capacitor Converters

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 68, (2), February 2021, article number 9302632, p. 556-561
Jiang, Junmin; Liu, Xun; Ki, Wing Hung; Mok, Kwok Tai Philip; Lu, Yan
Article

Design of Soft-Error-Aware SRAM With Multi-Node Upset Recovery for Aerospace Applications

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 68, (6), June 2021, article number 9429940, p. 2470-2480
Pal, Soumitra; Mohapatra, Sayonee; Ki, Wing Hung; Islam, Aminul
Article

Highly Stable Low Power Radiation Hardened Memory-by-Design SRAM for Space Applications

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 68, (6), June 2021, article number 9281113, p. 2147-2151
Pal, Soumitra; Sri, Dodla Divya; Ki, Wing Hung; Islam, Aminul
Article

Radiation-hardened read-decoupled low-power 12T SRAM for space applications

International Journal of Circuit Theory and Applications, v. 49, (11), November 2021, p. 3583-3596
Pal, Soumitra; Dodla, Divya Sri; Ki, Wing Hung; Islam, Aminul
Article

Soft-Error Aware Read-Decoupled SRAM with Multi-node Recovery for Aerospace Applications

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 68, (10), October 2021, p. 3336-3340
Pal, Soumitra; Mohapatra, Sayonee; Ki, Wing Hung; Islam, Aminul
Article

Soft-Error Resilient Read Decoupled SRAM with Multi-Node Upset Recovery for Space Applications

IEEE Transactions on Electron Devices, v. 68, (5), May 2021, article number 9385706, p. 2246-2254
Pal, Soumitra; Sri, Dodla Divya; Ki, Wing Hung; Islam, Aminul
Article

Soft-Error-Immune Read-Stability-Improved SRAM for Multi-Node Upset Tolerance in Space Applications

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 68, (8), August 2021, article number 9472876, p. 3317-3327
Pal, Soumitra; Mohapatra, Sayonee; Ki, Wing Hung; Islam, Aminul
Article

Analysis of Inductor Current for Series Resonant Tank at Different Practical Operating Conditions

IECON Proceedings (Industrial Electronics Conference), v. 2021-October, October 2021
Sarkar, Sayan; Yao, Yuan; Ki, Wing Hung
Conference paper

2020 14

40.68 MHz Digital On-Off Delay-Compensated Active Rectifier for WPT of Biomedical Applications

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 67, (12), December 2020, article number 9084122, p. 3307-3311
Pal, Soumitra; Ki, Wing Hung
Article

A 40.68-MHz Active Rectifier With Hybrid Adaptive On/Off Delay-Compensation Scheme for Biomedical Implantable Devices

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 67, (2), February 2020, p. 516-525
Cheng, Lin; Ge, Xinyuan; Hu, Langyu; Yao, Yuan; Ki, Wing Hung; Tsui, Chi Ying
Article

A 6.78-MHz Single-Stage Wireless Charger With Constant-Current Constant-Voltage Charging Technique

IEEE Journal of Solid-State Circuits, v. 55, (4), April 2020, p. 999-1010
Cheng, Lin; Ge, Xinyuan; Ng, Wai Chiu; Ki, Wing Hung; Zheng, Jiawei; Kwok, Tsz Fai; Tsui, Chi Ying; Liu, Ming
Article

A highly stable reliable SRAM cell design for low power applications

Microelectronics Reliability, v. 105, February 2020, article number 113503
Pal, Soumitra; Bose, Subhankar; Ki, Wing Hung; Islam, Aminul
Article

A Multi-Phase Switched-Capacitor Converter for Fully Integrated AMLED Micro Display System

IEEE Transactions on Power Electronics, v. 35, (6), June 2020, article number 8892517, p. 6001-6011
Jiang, Junmin; Liu, Xun; Ki, Wing Hung; Mok, Kwok Tai Philip; Lu, Yan
Article

An NMOS Digital LDO with NAND-Based Analog-Assisted Loop in 28-nm CMOS

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 67, (11), November 2020, article number 9146705, p. 4041-4052
Ma, Xiaofei; Lu, Yan; Li, Qiang; Ki, Wing Hung; Martins, Rui P.
Article

Fast-transient techniques for high-frequency DC-DC converters

Journal of Semiconductors, v. 41, (11), November 2020, article number 112402
Cheng, Lin; Tang, Kui; Ki, Wang Hung; Su, Feng
Article

Half-Select-Free Low-Power Dynamic Loop-Cutting Write Assist SRAM Cell for Space Applications

IEEE Transactions on Electron Devices, v. 67, (1), January 2020, article number 8935501, p. 80-89
Pal, Soumitra; Bose, Subhankar; Ki, Wing Hung; Islam, Aminul
Article

Reliable write assist low power SRAM cell for wireless sensor network applications

IET Circuits, Devices & Systems, v. 14, (2), March 2020, p. 137-147
Pal, Soumitra; Bose, Subhankar; Ki, Wing Hung; Islam, Aminul
Article

Subtraction-Mode Switched-Capacitor Converters With Parasitic Loss Reduction

IEEE Transactions on Power Electronics, v. 35, (2), February 2020, article number 8789393, p. 1200-1204
Jiang, Junmin; Liu, Xun; Huang, Cheng; Ki, Wing Hung; Mok, Kwok Tai Philip; Lu, Yan
Article

A Study on Shoot-Through Reduction of DC-DC Converter Pre-Driver using Starving Resistor

IEEE Region 10 Annual International Conference, Proceedings/TENCON, v. 2020, November 2020, article number 9293707, p. 532-537
Sarkar, Sayan; Ki, Wing Hung
Conference paper

Design of a Single-Stage Wireless Charger with 92.3%-Peak-Efficiency for Portable Devices Applications

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, v. 2020, January 2020, article number 90453600, p. 1-2
Cheng, Lin; Ge, Xinyuan; Ng, Wai Chiu; Ki, Wing Hung; Zheng, Jiawei; Kwok, Tsz Fai; Tsui, Chi Ying; Liu, Ming
Conference paper

Mathematical Modelling of Inductor Current in Class-D Amplifier for Wireless Power Transfer

2020 IEEE Wireless Power Transfer Conference, WPTC 2020 / IEEE. New York, NY, USA : IEEE, 2020, p. 399-402, Article number 9295607
Sarkar, Sayan; Ki, Wing Hung
Conference paper

Time Domain Analysis of Class-D Amplifier Driving Series-Series and Series-Parallel Circuits

IEEE Region 10 Annual International Conference, Proceedings/TENCON, v. 2020, November 2020, article number 9293947, p. 159-164
Sarkar, Sayan; Ki, Wing Hung
Conference paper

2019 16

A Low Power Relaxation Oscillator with Switched-Capacitor Frequency-Locked Loop for Wireless Sensor Node Applications

IEEE Solid-State Circuits Letters, v. 2, (12), December 2019, p. 281-284
Meng, Xiaodong; Li, Xing; Cheng, Lin; Tsui, Chi Ying; Ki, Wing Hung
Article

A transient-enhanced output-capacitor-free low-dropout regulator with dynamic miller compensation

IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, v. 27, (1), January 2019, article number 8458206, p. 243-247
Zhan, Chenchang; Cai, Guigang; Ki, Wing Hung
Article

Characterization of Half-Select Free Write Assist 9T SRAM Cell

IEEE Transactions on Electron Devices, v. 66, (11), November 2019, article number 8863651, p. 4745-4752
Pal, Soumitra; Bose, Subhankar; Ki, Wing Hung; Islam, Aminul
Article

Design and Development of Memristor-based RRAM

IET Circuits, Devices & Systems, v. 13, (4), July 2019, p. 548-557
Pal, Soumitra; Gupta, Vivek; Ki, Wing Hung; Islam, Aminul
Article

Design of Power- and Variability-Aware Nonvolatile RRAM Cell Using Memristor as a Memory Element

Journal of the Electron Devices Society, v. 7, 2019, article number 8764438, p. 701-709
Pal, Soumitra; Bose, Subhanker; Ki, Wing Hung; Islam, Aminul
Article

Transmission gate-based 9T SRAM cell for variation resilient low power and reliable internet of things applications

IET Circuits, Devices & Systems, v. 13, (5), August 2019, p. 584-595
Pal, Soumitra; Gupta, Vivek; Ki, Wing Hung; Islam, Aminul
Article

A 2.2μW 600kHz Frequency-Locked Relaxation Oscillator with 0.046%/V Voltage and 48.69ppm/°C Temperature Stability for IoT Sensor Node Applications

IEEE Symposium on VLSI Circuits, Digest of Technical Papers, v.2019, June 2019, article number 8778065, p. C44-C45
Meng, Xiaodong; Li, Xing; Zhong, Xiaopeng; Yao, Yuan; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

A 40.68MHz Active Rectifier with Hybrid Delay Compensation Scheme

2018 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2018, 8 January 2019, article number 8605616, p. 501-504
Hu, Langyu; Cheng, Lin; Yao, Yuan; Yim, Tak Sang; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

A 6.78MHz 92.3%-Peak-Efficiency Single-Stage Wireless Charger with CC-CV Charging and On-Chip Bootstrapping Techniques

IEEE Symposium on VLSI Circuits, Digest of Technical Papers, v. 2019, June 2019, article number 8777990, p. C320-C321
Cheng, Lin; Ge, Xinyuan; Ng, Wai Chiu; Ki, Wing Hung; Zheng, Jiawei; Kwok, Tsz Fai; Tsui, Chi Ying; Liu, Ming
Conference paper

A DCM ZVS Class-D Power Amplifier for Wireless Power Transfer Applications

2019 IEEE Asian Solid-State Circuits Conference (A-SSCC): Proceedings of Technical papers / IEEE. Piscataway, New Jersey : IEEE, 2019, p. 43-44, Article number 9056956
Ge, Xinyuan; Cheng, Lin; Ki, Wing Hung
Conference paper

A Simplified PWM Controller for Wireless Power Receiver Using a 3-Mode Reconfigurable Resonant Regulating Rectifier

2018 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2018, 8 January 2019, article number 8605613, p. 473-475
Cheng, Lin; Ge, Xinyuan; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Analysis and IC Techniques of Wireless Power Transfer Circuits

Proceedings of the Custom Integrated Circuits Conference, v. 2019-April, April 2019, article number 8780329
Ki, Wing Hung
Conference paper

Analyzing Subharmonic Oscillation of Current-Mode Buck Converters with the Circuit-Oriented Geometrical Approach

2019 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2019 - Proceedings / IEEE. Piscataway, New Jersey : IEEE, 2019, p. 37-38
Tang, Kui; Cheng, Lin; Ki, Wing Hung
Conference paper

Polyimide-Based Flexible 3-Coil Inductive Link Design and Optimization

2018 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2018, 8 January 2019, article number 8605614, p. 505-508
Yao, Yuan; Meng, Xiaodong; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

Single-Stage Rectifying Constant-Current Constant-Voltage Charger for Wireless Charging

2019 International SoC Design Conference (ISOCC) / IEEE CAS Society. South Korea : IEEE, 2019, p. 59-60, Article number 9078463
Ki, Wing Hung; Cheng, Lin; Ge, Xinyuan; Tsui, Chi Ying
Conference paper

Spatial Temperature Sensor with Distributed MASH Modulators

Proceedings of the Custom Integrated Circuits Conference, v. 2019-April, April 2019, article number 8780268
Lam, Hon Piu; Ki, Wing Hung
Conference paper

2018 17

A Self-powered Zero-quiescent-current Active Rectifier for Piezoelectric Energy Harvesting

IEICE Electronics Express, v. 15, (18), September 2018, article number 20180739
Ye, Yi-Die; Jiang, Junmin; Ki, Wing Hung
Article

Analysis and Design of a Ripple Reduction Chopper Bandpass Amplifier

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 65, (4), April 2018, p. 1185-1195
Zheng, Jiawei; Ki, Wing-Hung; Tsui, Chi-Ying
Article

Design Considerations of Distributed and Centralized Switched-Capacitor Converters for Power Supply On-Chip

IEEE Journal of Emerging and Selected Topics in Power Electronics, v. 6, (2), June 2018, p. 515-525
Lu, Yan; Jiang, Junmin; Ki, Wing Hung
Article

CMOS Integrated Circuit Design for Wireless Power Transfer

Lu, Yan; Ki, Wing Hung
Book

Analysis of Coupled-Coils

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 33-51, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

Circuit Design of CMOS Rectifiers

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 53-96, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

Conclusions and Future Works

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 159-161, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

DC-DC Converters for WPT

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 127-141, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

Introduction of Wireless Power Transfer

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 1-11, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

Linear Regulators for WPT

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 97-126, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

Power Amplifiers for WPT

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 143-157, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

Wireless Power Transfer Systems

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 13-32, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

A Digital SC Converter with High Efficiency and Low Voltage Ripple

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, v. 2018-January, February 2018, p. 289-290
Jiang, Junmin; Ki, Wing Hung; Lu, Yan
Conference paper

A Dual-Output SC Converter with Dynamic Power Allocation for Multi-Core Application Processors

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, v. 2018-January, February 2018, p. 285-286
Jiang, Junmin; Lu, Yan; Liu, Xun; Ki, Wing Hung; Mok, Philip Kwok Tai; Seng-Pan, U.; Martins, Rui Paulo
Conference paper

A fully integrated analog front end for biopotential signal sensing

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 65, (11), November 2018, article number 8438308, p. 3800-3809
Zheng, Jiawei; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

An Indoor Solar Energy Harvester with Ultra-Low-Power Reconfigurable Power-On-Reset-Styled Voltage Detector

2018 IEEE International Symposium on Circuits and Systems (ISCAS), 2018-May, 26 April 2018, article number 8351096
Meng, Xiaodong; Li, Xing; Yao, Yuan; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

Relaxation oscillator with dynamic comparator and slope-boosting technique

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 65, (10), October 2018, article number 8409992, p. 1330-1334
Zheng, Jiawei; Cheng, Lin; Jiang, Junmin; Ki, Wing Hung
Conference paper

2017 21

A 100 MHz Hybrid Supply Modulator With Ripple-Current-Based PWM Control

IEEE Journal of Solid-State Circuits, v. 52, (2), February 2017, article number 7738414, p. 569-578
Tan, Min; Ki, Wing Hung
Article

A 6.78-MHz Single-Stage Wireless Power Receiver Using a 3-Mode Reconfigurable Resonant Regulating Rectifier

IEEE Journal of Solid-State Circuits, v. 52, (5), May 2017, article number 7864386, p. 1412-1423
Cheng, Lin; Ki, Wing Hung; Tsui, Chi Ying
Article

A Dual-Output Wireless Power Transfer System With Active Rectifier and Three-Level Operation

IEEE Transactions on Power Electronics, v. 32, (2), February 2017, article number 7547959, p. 927-930
Lu, Yan; Huang, Mo; Cheng, Lin; Ki, Wing Hung; Seng-pan, U.; Martins, Rui P.
Article

A Multiphase Switched-Capacitor DC-DC Converter Ring With Fast Transient Response and Small Ripple

IEEE Journal of Solid-State Circuits, v. 52, (2), February 2017, article number 7737010, p. 579-591
Lu, Yan; Jiang, Junmin; Ki, Wing Hung
Article

Chopper Capacitively-Coupled Instrumentation Amplifier Capable of Handling Large Electrode Offset for Biopotential Recordings

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 64, (12), December 2017, article number 8012445, p. 1392-1396
Zheng, Jiawei; Ki, Wing Hung; Hu, Langyu; Tsui, Chi Ying
Article

Digital 2-/3-Phase Switched-Capacitor Converter With Ripple Reduction and Efficiency Improvement

IEEE Journal of Solid-State Circuits, v. 52, (7), July 2017, article number 7892868, p. 1836-1848
Jiang, Junmin; Ki, Wing Hung; Lu, Yan
Article

Optic Nerve Stimulation System with Adaptive Wireless Powering and Data Telemetry

Micromachines, v.8, (12), December 2017, article number 368
Li, Xing; Lu, Yan; Meng, Xiaodong; Tsui, Chi-Ying; Ki, Wing-Hung
Article

Predicting Subharmonic Oscillation of Voltage-Mode Switching Converters Using a Circuit-Oriented Geometrical Approach

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 64, (3), March 2017, article number 7792674, p. 717-730
Cheng, Lin; Ki, Wing-Hung; Yang, Fan; Mok, Philip K.T.; Jing, Xiaocheng
Article

Wireless Power Transfer System With ΣΔ Modulated Transmission Power and Fast Load Response for Implantable Medical Devices

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 64, (3), March 2017, article number 7453177, p. 279-283
Li, Xing; Li, Yinping; Tsui, Chi Ying; Ki, Wing Hung
Article

Very-High-Frequency and Fast-Transient DC-DC Switching Converters

Selected Topics in Power, RF, and Mixed-Signal ICs / Editors: Yan Lu, China Chi-Seng Lam. River Publishers, 2018, p. 9-60, Ch. 1
Cheng, Lin; Ki, Wing Hung
Book chapter

1.7mm² Inductorless Fully Integrated Flipping-capacitor Rectifier (FCR) For Piezoelectric Energy Harvesting with 483% Power-extraction Enhancement

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, v. 60, March 2017, article number 7870416, p. 372-373
Chen, Zhiyuan; Law, Mankay; Mak, Pui-In; Ki, Wing-Hung; Martins, Rui Paulo
Conference paper

A 13.56 MHz On/Off Delay-Compensated Fully-Integrated Active Rectifier for Biomedical Wireless Power Transfer Systems

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, February 2017, article number 7858287, p. 31-32
Cheng, Lin; Ki, Wing Hung; Yim, Tak Sang
Conference paper

A 13.56 MHz One-Stage High-Efficiency 0X/1X R³ Rectifier for Implatable Medical Devices

2017 IEEE International Symposium on Circuits and Systems (ISCAS), September 2017, article number 8050848
Ge, Xinyuan; Cheng, Lin; Ki, Wing Hung
Conference paper

A 30MHz Hybrid Buck Converter with 36mV Droop and 125ns 1% Settling Time for a 1.25A/2ns Load Transient

IEEE International Solid-State Circuits Conference, v. 60, March 2017, article number 7870324, p. 188-189
Cheng, Lin; Ki, Wing Hung
Conference paper

A Dual-symmetrical-output Switched-capacitor Converter with Dynamic Power Cells and Minimized Cross Regulation for Application Processors in 28nm CMOS

IEEE International Solid-State Circuits Conference, v. 60, March 2017, article number 7870402, p. 344-345
Jiang, Junmin; Lu, Yan; Ki, Wing Hung; U seng-pan; Martins, Rui Paulo
Conference paper

A Wireless Power Receiver with a 3-Level Reconfigurable Resonant Regulating Rectifier for Mobile-Charging Applications

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, April 2017, article number 7858288, p. 33-34
Cheng, Lin; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Closed-Loop Transfer Functions and Frequency-Point Spectrum Simulation of CCM Buck Converters

2016 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2016, January 2017, article number 7804069, p. 698-701
Ki, Wing Hung; Cheng, Lin; Zhan, Chenchang
Conference paper

CMOS Fully-integrated Coulomb Counter Based on Voltage-to-frequency Conversion Algorithm

EDSSC 2017 - 13th IEEE International Conference on Electron Devices and Solid-State Circuits, v. 2017-January, December 2017, p. 1-2
Modak, Dipyaman; Kwok, Tsz Fai; Ki, Wing Hung
Conference paper

Fully-Integrated AMLED Micro Display System With a Hybrid Voltage Regulator

2017 IEEE Asian Solid-State Circuits Conference, A-SSCC 2017 - Proceedings, v. 2017-January, December 2017, p. 277-280
Jiang, Junmin; Sun, Liusheng; Zhang, Xu; Yuen, Shing Hin; Li, Xianbo; Ki, Wing Hung; Yue, Patrick C.; Lau, Kei May
Conference paper

Methods for Measuring Loop-Gain Function of High-Frequency DC-DC Converters

2016 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2016, January 2017, article number 7803945, p. 247-249
Liu, Xun; Jiang, Junmin; Mok, Philip K T; Ki, Wing Hung
Conference paper

Stability Conditions for Hybrid Supply Modulators

Proceedings - IEEE International Symposium on Circuits and Systems, September 2017, article number 8050513, Category numberCFP17ISC-USB; Code 130930
Tan, Min; Ki, Wing Hung
Conference paper

2016 13

Adaptive On/Off Delay-Compensated Active Rectifiers for Wireless Power Transfer Systems

IEEE Journal of Solid-State Circuits, v. 51, (3), March 2016, article number 7403843, p. 712-723
Cheng, Lin; Ki, Wing Hung; Lu, Yan; Yim, Tak Sang
Article

An Efficiency-Enhanced Hybrid Supply Modulator With Single-Capacitor Current-Integration Control

IEEE Journal of Solid-State Circuits, v. 51, (2), February 2016, article number 7328251, p. 533-542
Tan, Min; Ki, Wing Hung
Article

An Implantable Medical Device for Transcorneal Electrical Stimulation: Packaging Structure, Process Flow, and Toxicology Test

IEEE Transactions on Components, Packaging and Manufacturing Technology, v. 6, (8), Aug 2016, article number 7509610, p. 1174-1180
Le, Fuliang; Lo, Chi Chuen; Qiu, Xing; Lee, Shi-wei; Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Article

An NMOS-LDO Regulated Switched-Capacitor DC-DC Converter With Fast-Response Adaptive-Phase Digital Control

IEEE Transactions on Power Electronics, v. 31, (2), February 2016, article number 7080886, p. 1294-1303
Lu, Yan; Ki, Wing Hung; Yue, Chik
Article

Analysis and Design Considerations of Integrated 3-Level Buck Converters

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 63, (5), May 2016, article number 7469385, p. 671-682
Liu, Xun; Mok, Kwok Tai Philip; Jiang, Junmin; Ki, Wing Hung
Article

Limit Cycle Oscillation Reduction for Digital Low Dropout Regulators

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 63, (9), September 2016, article number 7419894, p. 903-907
Huang, Mo; Lu, Yan; Sin, Saiweng; U, Seng-Pan; Martins, Rui Paulo; Ki, Wing Hung
Article

A 0.035mm² 150mA Fast-Response Low-Dropout Regulator Based on Matching-Enhanced Error Amplifier and Multi-Threshold-Controlled Unity-Gain Buffer in 0.13-µm CMOS

2016 IEEE International Symposium on Circuits and Systems (ISCAS), v. 2016-July, July 2016, article number 7539151, p. 2703-2706
Zhan, Chenchang; Ki, Wing Hung; Zheng, Jiawei; Liu, Yonggen
Conference paper

A 6.78MHz 6W Wireless Power Receiver with a 3-Level 1x / 1/2 x / 0x Reconfigurable Resonant Regulating Rectifier

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, v. 59, February 2016, article number 7418064, p. 376-377
Cheng, Lin; Ki, Wing-Hung; Wong, Tatto; Yim, Taksang; Tsui, Chiying
Conference paper

A Digitally-controlled 2-/3-phase 6-ratio Switched-capacitor DC-DC Converter with Adaptive Ripple Reduction and Efficiency Improvements

ESSCIRC Conference 2016: 42nd European Solid-State Circuits Conference, v. 2016-October, October 2016, article number 7598336, p. 441-444
Jiang, Junmin; Lu, Yan; Ki, Wing Hung
Conference paper

A Generic Model for Constructing Three-Stage Amplifiers

2016 IEEE International Symposium on Circuits and Systems (ISCAS), v. 2016-July, July 2016, article number 7527278, p. 466-469
Tan, Min; Ki, Wing Hung
Conference paper

A Low-Power Chopper Bandpass Amplifier for Biopotential Sensors

Proceedings - IEEE International Symposium on Circuits and Systems, v. 2016-July, July 2016, article number 7527230, p. 301-304
Zheng, Jiawei; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

A WLAN 2.4-GHz RF Energy Harvesting System With Reconfigurable Rectifier For Wireless Sensor Network

Proceedings - IEEE International Symposium on Circuits and Systems, v. 2016-July, July 2016, article number 7539059, p. 2362-2365
Zeng, Zizhen; Li, Xing; Bermak, Amine; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

An Indoor Solar Energy Harvesting System Using Dual Mode SIDO Converter with Fully Digital Time-Based MPPT

Proceedings - IEEE International Symposium on Circuits and Systems, v. 2016-July, July 2016, article number 7539057, p. 2354-2357
Meng, Xiaodong; Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

2015 16

A 13.56 MHz Wireless Power Transfer System With Reconfigurable Resonant Regulating Rectifier and Wireless Power Control for Implantable Medical Devices

IEEE Journal of Solid-State Circuits, v. 50, (4), April 2015, article number 7035125, p. 978-989
Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Article

A 30-Gb/s 1.37-pJ/b CMOS Receiver for Optical Interconnects

Journal of Lightwave Technology, v. 33, (4), February 2015, article number 6985584, p. 778-786
Pan, Quan; Wang, Yipeng; Hou, Zhengxiong; Sun, Li; Lu, Yan; Ki, Wing-Hung; Chiang, Patrick; Yue, Chik Patrick
Article

A Cascode Miller-Compensated Three-Stage Amplifier With Local Impedance Attenuation for Optimized Complex-Pole Control

IEEE Journal of Solid-State Circuits, v. 50, (2), February 2015, p. 440-449
Tan, Min; Ki, Wing-Hung
Article

A Fully-Integrated Low-Dropout Regulator With Full-Spectrum Power Supply Rejection

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 62, (3), March 2015, p. 707-716
Lu, Yan; Wang, Yipeng; Pan, Quan; Ki, Wing Hung; Yue, Patrick C.
Article

On-Chip Compensated Wide Output Range Boost Converter with Fixed-Frequency Adaptive Off-Time Control for LED Driver Applications

IEEE Transactions on Power Electronics, v. 30, (4), April 2015, article number 6945409, p. 2096-2107
Cheng, Lin; Ni, Jinhua; Qian, Yao; Zhou, Minchao; Ki, Wing-Hung; Liu, Bill Yang; Li, Grant; Hong, Zhiliang
Article

Power Management Analysis of Inductively-Powered Implants with 1X/2X Reconfigurable Rectifier

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 62, (3), March 2015, article number 6977994, p. 617-624
Li, Xing; Tsui, Chi-Ying; Ki, Wing-Hung
Article

Reconfigurable Resonant Regulating Rectifier With Primary Equalization for Extended Coupling- and Loading-Range in Bio-Implant Wireless Power Transfer

IEEE Transactions on Biomedical Circuits and Systems, v. 9, (6), December 2015, p. 875-884
Li, Xing; Meng, Xiaodong; Tsui, Chi Ying; Ki, Wing Hung
Article

A 123-Phase DC-DC Converter-Ring with Fast-DVS for Microprocessors

2015 IEEE International Solid-state Circuits Conference: Digest of Technical Papers /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 364-365, Article number 7063077
Lu, Yan; Jiang, Junmin; Ki, Wing-Hung; Yue, Chik Patrick; Sin, Sai-Weng; U, Seng-pan; Martins, Rui Paulo
Conference paper

A 12A 50V Half-bridge Gate Driver for Enhancement-mode GaN HEMTs with Digital Dead-time Correction

2015 IEEE International Symposium on Circuits and Systems (ISCAS 2015) /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 1750-1753, Article number 7168992
Chen, Ziang; Wong, Yat To; Yim, Tak Sang; Ki, Wing Hung
Conference paper

A 2-/3-Phase Fully Integrated Switched-Capacitor DC-DC Converter in Bulk CMOS for Energy-Efficient Digital Circuits with 14% Efficiency Improvement

2015 IEEE International Solid-State Circuits Conference (ISSCC 2015) /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 366-367, Article number 7063078
Jiang, Junmin; Lu, Yan; Huang, Cheng; Ki, Wing-Hung; Mok, Philip Kwok Tai
Conference paper

A Fully Integrated IEEE 802.15.7 Visible Light Communication Transmitter with On-chip 8-W 85% Efficiency Boost LED Driver

2015 Symposium on VLSI Circuits (VLSI Circuits 2015) /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. C216-C217, Article number 7231264
Hussain, Babar; Che, Fengyu; Zhang, Feng; Yim, Tak-Sang; Cheng, Lin; Ki, Wing-Hung; Yue, Patrick Chik; Wu, Liang
Conference paper

Analysis of Two-phase On-chip Step-down Switched Capacitor Power Converters

2014 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS 2014) /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 575-578, Article number 7032847
Jiang, Junmin; Lu, Yan; Ki, Wing-Hung
Conference paper

Efficient wireless power transmission technology based on above-CMOS integrated (ACI) high quality inductors

2014 IEEE International Electron Devices Meeting (IEDM), February 2015, article number 7047038, p. 12.4.1-12.4.4
Raju, Salahuddin; Li, Xing; Lu, Yan; Tsui, Chi Ying; Ki, Wing Hung; Chan, Mansun; Yue, Chik Patrick
Conference paper

Fluxless Packaging of an Implantable Medical Device for Transcorneal Electrical Stimulation

Proceedings of the Electronic Packaging Technology Conference, EPTC, v. 2016-February, February 2016, article number 7412282
Le, Fuliang; Lo, Chi Chuen; Qiu, Xing; Lee, Shi-wei; Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

UHF energy harvesting system using reconfigurable rectifier for wireless sensor network

2015 IEEE International Symposium on Circuits and Systems (ISCAS), July 2015, article number 7168578, p. 93-96
Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

Wireless Power Transfer System Using Primary Equalizer for Coupling- and Load-Range Extension in Bio-Implant Applications

2015 IEEE International Solid-State Circuits Conference - (ISSCC) Digest of Technical Papers, Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 228-229
Li, Xing; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

2014 18

A 10/30 MHz Fast Reference-Tracking Buck Converter with DDA-Based Type-III Compensator

IEEE Journal of Solid-State Circuits, v. 49, (12), December 2014, article number 6888536, p. 2788-2799
Cheng, Lin; Liu, Yonggen; Ki, Wing Hung
Article

A 13.56 MHz CMOS Active Rectifier With Switched-Offset and Compensated Biasing for Biomedical Wireless Power Transfer Systems

IEEE Transactions on Biomedical Circuits and Systems, v. 8, (3), 2014, article number 6552222, p. 334-344
Lu, Yan; Ki, Wing-Hung
Article

A Novel Single-Inductor Dual-Input Dual-Output DC-DC Converter With PWM Control for Solar Energy Harvesting System

IEEE Transactions on Very Large Scale Integration (VLSI) Systems, v. 22, (8), 2014, article number 6595148, p. 1693-1704
Shao, Hui; Li, Xing; Tsui, Chi-Ying; Ki, Wing Hung
Article

Analysis and Design of Output-Capacitor-Free Low-Dropout Regulators With Low Quiescent Current and High Power Supply Rejection

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 61, (2), February 2014, article number 6717040, p. 625-636
Zhan, Chenchang; Ki, Wing-Hung
Article

17.11 A 0.65ns-response-time 3.01ps FOM Fully-integrated Low-dropout Regulator with Full-spectrum Power-supply-rejection for Wideband Communication Systems

2014 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2014, article number 6757446, p. 306-307
Lu, Yan; Ki, Wing-Hung; Yue, Chik Patrick
Conference paper

4.4 A 10/30MHz Wide Duty Cycle Range Buck Converter with DDA-based Type-III Compensator and Fast Reference-tracking Responses for DVS Applications

2014 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2014, article number 6757348, p. 84-86
Cheng, Lin; Liu, Yonggen; Ki, Wing Hung
Conference paper

A 13.56MHz Wireless Power Transfer System with Reconfigurable Resonant Regulating Rectifier and Wireless Power Control for Implantable Medical Devices

28th IEEE Symposium on VLSI Circuits Digest of Technical Papers, Institute of Electrical and Electronics Engineers (IEEE), 2014
Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

A 3-mW 25-Gb/s CMOS Transimpedance Amplifier with Fully Integrated Low-dropout Regulator for 100GbE Systems

Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium, 2014, article number 6851718, p. 275-278
Wang, Yipeng; Lu, Yan; Pan, Quan; Hou, Zhengxiong; Wu, Liang; Ki, Winghung; Yue, Chik Patrick
Conference paper

A 41-mW 30-Gb/s CMOS optical receiver with digitally-tunable cascaded equalization

European Solid-State Circuits Conference, v. 2014, 2014, article number 6942038, p. 127-130
Pan, Quan; Wang, Yipeng; Hou, Zhengxiong; Sun, Li; Wu, Liang; Ki, Wing Hung; Chiang, Patrick; Yue, Chik Patrick
Conference paper

A 48-mW 18-Gb/s Fully Integrated CMOS Optical Receiver with Photodetector and Adaptive Equalizer

2014 Symposium on VLSI Circuits (VLSI-Circuits 2014), Institute of Electrical and Electronics Engineers (IEEE), 2014
Pan, Quan; Hou, Zhengxiong; Wang, Yipeng; Lu, Yan; Ki, Wing Hung; Wang, Keh Chung; Yue, Chik Patrick
Conference paper

A 4μA quiescent current output-capacitor-free low-dropout regulator with fully differential input stage

Proceedings of IEEE International Symposium on Circuits and Systems, v. 2014, 2014, article number 6865670, p. 2457-2460
Tan, Min; Zhan, Chenchang; Ki, Wing Hung
Conference paper

A circuit-oriented geometrical approach in predicting subharmonic oscillation of dc-dc converters with voltage-mode control

Proceedings of IEEE International Symposium on Circuits and Systems, 2014, article number 6865297, p. 962-965
Cheng, Lin; Ki, Wing Hung
Conference paper

A fast transient output-capacitor-free low-dropout regulator with class-AB control stage

2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014, 2014, article number 7061244
Tan, Min; Ki, Wing-Hung
Conference paper

A low-dropout regulator with power supply rejection improvement by bandwidth-zero tracking

IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, 2014, article number 7032730, p. 105-108
Lu, Yan; Yao, Ruo He; Huang, Da Qiang; Su, Julien; Jiang, Junmin; Ki, Wing-Hung
Conference paper

An Adaptive Wireless Powering and Data Telemetry System for Optic Nerve Stimulation

2014 IEEE International Symposium on Circuits and Systems (ISCAS 2014), Institute of Electrical and Electronics Engineers (IEEE), 2014, p. 1404-1407
Li, Xing; Lu, Yan; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

Fast-transient-response high-PSR low-dropout regulator based on ultra-fast error amplifier and unity-gain buffer for portable applications

Proceedings of IEEE International Symposium on Circuits and Systems, 2014, article number 6865283, p. 906-909
Liu, Yonggen; Zhan, Chenchang; Ki, Wing Hung
Conference paper

Load-transient enhanced low-dropout regulator based on buffer stage with paralleled current and voltage paths for low-ESR applications

2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014, 2014, article number 7061245
Liu, Yonggen; Zhan, Chenchang; Zheng, Jiawei; Ki, Wing-Hung
Conference paper

Through Silicon Underfill Dispensing for 3D Die/Interposer Stacking

Proceedings - Electronic Components and Technology Conference, September 2014, article number 6897397, p. 919-924
Le, Fuliang; Lee, Ricky Shi-wei; Lau, Kei May; Yue, Chik Patrick; Sin, Johnny Kin On; Mok, Philip Kwok Tai; Ki, Wing Hung; Choi, Hoi Wai
Conference paper

2013 9

A +/- 0.5% Precision On-Chip Frequency Reference With Programmable Switch Array for Crystal-Less Applications

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 60, (10), 2013, article number 6584791, p. 642-646
Lu, Yan; Yuan, Gang; Der, Lawrence; Ki, Wing-Hung; Yue, Chik Patrick
Article

Energy Harvesting and Power Delivery for Implantable Medical Devices

Foundations and trends in electronic design automation, v. 7, (3), August 2013, p. 179-246
Li, Xing; Tsui, Chi-Ying; Ki, Wing Hung
Article

Energy Harvesting and Power Delivery for Implantable Medical Devices

Foundations and Trends® in Electronic Design Automation (Book 22) / [Authors]: Chi-Ying Tsui, Xing Li, Wing-Hung Ki. Boston - Delft : Now Publishers Inc, 2013, p. 1-82
Tsui, Chi Ying; Li, Xing; Ki, Wing Hung
Book chapter

A 13.56MHz fully integrated 1X/2X active rectifier with compensated bias current for inductively powered devices

Lu, Yan; Li, Xing; Ki, Wing-Hung; Tsui, Chiying; Yue, Patrick Chik
Conference paper

Cost-effective and Eco-friendly LED System-on-a-Chip (SoC)

2013 10th China International Forum on Solid State Lighting, ChinaSSL 2013, 2013, article number 7177356, p. 235-238
Lau, Kei May; Choi, Hoiwai; Ki, Wing-Hung; Lee, Ricky Shi Wei; Mok, Philip Kwok Tai; Sin, Johnny Kin On; Yue, Chik Patrick
Conference paper

Current-Mirror Miller Compensation: An Improved Frequency Compensation Technique for Two-Stage Amplifiers

International Symposium on VLSI Design Automation and Test, v. 2013, 2013, article number 6533876
Tan, Min; Ki, Wing-Hung
Conference paper

High-Side NMOS Power Switch and Bootstrap Driver for High-Frequency Fully-Integrated Converters with Enhanced Efficiency

2013 IEEE International Symposium on Circuits and Systems (ISCAS 2013), Institute of Electrical and Electronics Engineers (IEEE), 2013, p. 693-696
Huang, Cheng; Cheng, Lin; Mok, Philip Kwok Tai; Ki, Wing Hung
Conference paper

Session 21 overview: Power converters

2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers, San Francisco, CA, USA, 17-21 Feb 2013, p. 360-361
Ki, Wing Hung; Berkhout, Marco
Conference paper

Split-output Miller-compensated Two-stage Amplifiers

2013 IEEE International Conference of Electron Devices and Solid-State Circuits (EDSSC 2013), Institute of Electrical and Electronics Engineers (IEEE), 2013
Tan, Min; Ki, Wing Hung
Conference paper

2012 13

An Output-Capacitor-Free Adaptively Biased Low-Dropout Regulator With Subthreshold Undershoot-Reduction for SoC

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 59, May 2012, p. 1119-1131
Zhan, Chenchang; Ki, Wing-Hung
Article

Introduction to the Special Issue on the 2012 IEEE International Solid-State Circuits Conference

IEEE Journal of Solid-State Circuits, v. 47, December 2012, p. 2859-2864
Corsi, Marco; Andreani, Pietro; Ki, Wing-Hung; Chien, George; Kenney, Jack
Article

Output Capacitor Free Low Dropout Regulators: Analysis and Design

Zhan, Chenchang; Ki, Wing-Hung
Book

A 10/30MHz PWM Buck Converter with an Accuracy-Improved Ramp Generator

2012 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS (APCCAS), Kaohsiung, Taiwan, 2012, p. 420-423
Liu, Yonggen; Zhan, Chenchang; Cheng, Lin; Ki, Wing-Hung
Conference paper

A Chip-Area-Efficient CMOS Low-Dropout Regulator Using Wide-Swing Voltage Buffer with Parabolic Adaptive Biasing for Portable Applications

2012 IEEE Asian Solid State Circuits Conference (A-SSCC), 2012, article number 6522668, p. 233-236
Liu, Yonggen; Zhan, Chenchang; Cheng, Lin; Ki, Wing Hung
Conference paper

A Comparative Study of Hysteretic Voltage-Mode Buck Converters for High Switching Frequency and High Accuracy

2012 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS (APCCAS), 2012, p. 57-60
Lai, King-Man; Zhan, Chenchang; Ki, Wing-Hung
Conference paper

A fast-transient-response hybrid buck converter with automatic and nearly-seamless loop transition for portable applications

Proceedings of IEEE European Solid-State Circuits Conference, Bordeaux, France, 2012, p. 165-168
Liu, Yonggen; Zhan, Chenchang; Ki, Wing Hung
Conference paper

A new charge pump analysis and efficiency optimization method for on-chip charge pump

Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

Analysis and design strategy of on-chip charge pumps for micro-power energy harvesting applications

Ki, Wing-Hung; Lu, Yan; Su, Feng; Tsui, Chi Ying
Conference paper

Continuous-Time Common-Mode Feedback Detection Circuits with Enhanced Detection Accuracy

2012 IEEE INTERNATIONAL CONFERENCE ON ELECTRON DEVICES AND SOLID STATE CIRCUIT (EDSSC), Bangkok, Thailand, 2012
Liu, Yonggen; Zhan, Chenchang; Yim, Tak Sang; Ki, Wing-Hung
Conference paper

Input-Adaptive Dual-Output Power Management Unit for Energy Harvesting Devices

Midwest Symposium on Circuits and Systems, 2012, p. 1080-1083
Lu, Yan; Ki, Wing-Hung; Yue, C. Patrick
Conference paper

Session 5 overview: Audio and power converters: Analog subcommittee

2012 IEEE International Solid-State Circuits Conference, San Francisco, CA, 19-23 Feb 2012, p. 90-91
Ki, Wing Hung; Hurwitz, Jed
Conference paper

Solar energy harvesting system design using re-configurable charge pump

Li, Xing; Tsui, Chi-Ying; Ki, Wing Hung
Conference paper

2011 9

A low dropout regulator with low quiescent current and high power supply rejection over wide range of frequency for SOC

Journal of circuits, systems, and computers, 20, (1), February 2011, p. 1-13
Zhan, Chenchang; Ki, Wing-Hung
Article

Charge Balance Analysis and State Transition Analysis of Hysteretic Voltage Mode Switching Converters

IEEE transactions on circuits and systems. I, Regular papers, v. 58, (5), May 2011, p. 1142-1153
Ki, Wing-Hung; Lai, King-Man; Zhan, Chenchang
Article

Vibration Energy Scavenging System With Maximum Power Tracking for Micropower Applications

IEEE transactions on very large scale integration (VLSI) systems, v. 19, (11), November 2011, p. 2109-2119
Lu, Chao; Tsui, Chi-Ying; Ki, Wing-Hung
Article

A 13.56MHz CMOS rectifier with switched-offset for reversion current control

IEEE Symposium on VLSI Circuits, Digest of Technical Papers, 2011, p. 246-247
Lu, Yan; Ki, Wing-Hung; Yi, Jun
Conference paper

An adaptive multi-stage rectifier for RF energy harvesting applications

Li, Xing; Tsui, Chi-Ying; Ki, Wing Hung
Conference paper

An Adaptively Biased Low-Dropout Regulator with Transient Enhancement

2011 16TH ASIA AND SOUTH PACIFIC DESIGN AUTOMATION CONFERENCE (ASP-DAC), 2011
Zhan, Chenchang; Ki, Wing-Hung
Conference paper

An Output-Capacitor-Free Adaptively Biased Low-Dropout Regulator With Sub-Threshold Undershoot-Reduction for SoC

IEEE International Symposium on Circuits & Systems (ISCAS), 2011, p. 45-48
Zhan, Chenchang; Ki, Wing-Hung
Conference paper

Design and analysis of on-chip charge pumps for micro-power energy harvesting applications

Ki, Wing Hung; Lu, Yan; Su, Feng; Tsui, Chi Ying
Conference paper

ES6: Technologies for smart grid and smart meter

2011 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC), San Francisco, CA, 20-24 Feb 2011, p. 533
Jeremy, Hurwitz; Ki, Wing Hung
Conference paper

2010 12

A system-on-chip EPC Gen-2 passive UHF RFID tag with embedded temperature sensor

IEEE Journal of Solid-State Circuits, v. 45, (11), 2010, p. 2404-2420
Yin, Jun; Yi, Jun; Law, Man Kay; Ling, Yunxiao; Lee, Man Chiu; Ng, Kwok Ping; Gao, Bo; Luong, Howard; Bermak, Amine; Chan, Man Sun; Ki, Wing-Hung; Tsui, Chiying; Yuen,Matthew Ming Fai
Article

CMOS Bandgap References With Self-Biased Symmetrically Matched Current-Voltage Mirror and Extension of Sub-1-V Design

IEEE TRANSACTIONS on very LARGE SCALE INTEGRATION (vlsi) SYSTEMS, v. 18, (6), 2010, p. 857-865
Lam, Yat-Hei; Ki, Wing-Hung
Article

Engineering Outreach: A Successful Initiative With Gifted Students in Science and Technology in Hong Kong

IEEE transactions on education, v. 53, (1), 2010, FEB, p. 158-171
Chan, Yuen-Yan; Hui, Diane; Dickinson, Anthony R.; Chu, Dennis; Cheng, David Ki-Wai; Cheung, Edward; Ki, Wing-Hung; Lau, Wing-Hong; Wong, Jasper; Lo, Edward W.C.; Luk, Kwai-Man
Article

Output-Capacitor-Free Adaptively Biased Low-Dropout Regulator for System-on-Chips

IEEE TRANSACTIONS on Circuits and SYSTEMS i-regular Papers, v. 57, (5, Sp. Iss. SI), 2010, MAY, p. 1017-1028
Zhan, Chenchang; Ki, Wing-Hung
Article

A 25MHz sign and magnitude converter for analog current mode iterative decoders

Proceedings of the 2010 IEEE Asia Pacific Conference on Circuit and System (APCCAS), 2010, p. 220-223
Lo, Ming Yam; Ki, Wing Hung; Mow, Wai Ho
Conference paper

A single inductor DIDO DC-DC converter for solar energy harvesting applications using band-band control

Shao, Hui; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

A system-on-chip EPC Gen-2 passive UHF RFID tag with embedded temperature sensor

Yin, Jun; Yi, Jun; Law, Man Kay; Ling, Yunxiao; Lee, Man Chiu; Ng, Kwok Ping; Gao, Bo; Luong, Howard C.; Bermak, Amine; Chan, Man Sun; Ki, Wing-Hung; Tsui, Chi-Ying; Yuen, Matthew Ming-Fai
Conference paper

An output-capacitor-free cascode low-dropout regulator with low quiescent current and high power supply rejection

IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, 2010, p. 472-475
Zhan, Chenchang; Ki, Wing-Hung
Conference paper

Freewheel duration adjustment circuits for charge-control single-inductor dual-output switching converters

ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, 2010, p. 2722-2725
Kwan, Kwok-To; Ki, Wing-Hung
Conference paper

Maximizing the Harvested Energy for Micro-power Applications through Efficient MPPT and PMU Design

Shao, Hui; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

Output-Capacitor-Free Adaptively Biased Low-Dropout Regulators

2010 IEEE International Conference of Electron Devices and Solid-State Circuits, EDSSC 2010, 2010
Zhan, Chenchang; Ki, Wing-Hung
Conference paper

System Level Power Optimizations for EPC RFID Tags to Improve Sensitivity Using Load Power Shaping and Operation Scheduling

Ling, Yunxiao; Yi, Jun; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

2009 11

Regulated Switched-Capacitor Doubler With Interleaving Control for Continuous Output Regulation

IEEE journal of solid-state circuits, v. 44, (4), April 2009, p. 1112-1120
Su, Feng; Ki, Wing Hung; Tsui, Chi Ying
Article

The Design of a Micro Power Management System for Applications Using Photovoltaic Cells With the Maximum Output Power Control

IEEE Transactions on Very Large Scale Integration (VLSI) Systems, v. 17, (8), August 2009, p. 1138-1142
Shao, Hui; Tsui, Chi Ying; Ki, Wing Hung
Article

A 20MHz switched-current sample-and-hold circuit for current mode analog iterative decoders

Proceedings of the 2009 12th International Symposium on Integrated Circuits, 2009, p. 283-286
Lo, Ming Yam; Ki, Wing-Hung; Mow, Wai Ho
Conference paper

A high-precision low-voltage low dropout regulator for SoC with adaptive biasing

2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009, Taipei, Taiwan, 24-27 May 2009, p. 2521-2524
Zhan, Chenchang; Ki, Wing Hung
Conference paper

A Low Dropout Regulator for SoC with High Power Supply Rejection and Low Quiescent Current

PROCEEDINGS OF THE 2009 12TH INTERNATIONAL SYMPOSIUM ON INTEGRATED CIRCUITS (ISIC 2009), 2009, p. 260-263
Zhan, Chenchang; Ki, Wing-Hung
Conference paper

A single inductor dual input dual output DC-DC converter with hybrid supplies for solar energy harvesting applications

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

An inductor-less MPPT design for light energy harvesting systems

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

Digitally assisted quasi-V² hysteretic buck converter with fixed frequency and without using large-ESR capacitor

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, 2009
Su, Feng; Ki, Wing-Hung
Conference paper

Dual-Power-path RF-DC Multi-Output Power Management Unit for RFID Tags

Yi, Jun; Ki, Wing-Hung; Mok, Philip; Tsui, Chi-Ying
Conference paper

Loop Bandwidth Extension Technique for PWM Voltage Mode DC-DC Switching Converters

2009 IEEE ASIAN SOLID-STATE CIRCUITS CONFERENCE (A-SSCC), 2009, p. 325-328
Zhan, Chenchang; Ki, Wing-Hung
Conference paper

Near-threshold startup integrated boost converter with slew rate enhanced error amplifier

Proceedings - IEEE International Symposium on Circuits and Systems, 2009, p. 2409-2412
Wong, Yat-To; Ng, Chik-Wai; Wan, Ho-Ming; Kwong, Kwok-Kuen; Lam, Yat-Hei; Ki, Wing-Hung
Conference paper

2008 9

Component-efficient multiphase switched-capacitor dC-dC converter with configurable conversion ratios for LCD driver applications

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 55, (8), 2008, AUG, p. 753-757
Su, Feng; Ki, Wing-Hung
Article

Ultra fast fixed-frequency hysteretic buck converter with maximum charging current control and adaptive delay compensation for DVS applications

IEEE journal of solid-state circuits, v. 43, (4), April 2008, p. 815-822
Su, Feng; Ki, Wing-Hung; Tsui, Chi-Ying
Article

A 0.9V 0.35μm adaptively biased CMOS LDO regulator with fast transient response

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, v. 51, 2008
Lam, Yat-Hei; Ki, Wing-Hung
Conference paper

An energy-adaptive MPPT power management unit for micro-power vibration energy harvesting

Yi, Jun; Su, Feng; Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

An integrated reconfigurable SC power converter with hybrid gate control scheme for mobile display driver applications

Proceedings of 2008 IEEE Asian Solid-State Circuits Conference, A-SSCC 2008, 2008, p. 169-172
Su, Feng; Ki, Wing-Hung
Conference paper

An SC voltage regulator with novel area-efficient continuous output regulation by dual-branch interleaving control scheme

Su, Feng; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

Integrated single-inductor dual-input dual-output boost converter for energy harvesting applications

Sze, Ngok-Man; Su, Feng; Lam, Yat-Hei; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Threshold voltage start-up boost converter for sub-mA applications

Sze, Ngok Man; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

2007 9

Analysis and Design Strategy of UHF Micro-Power CMOS Rectifiers for Micro-Sensor and RFID Applications

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 54, (1), January 2007, p. 153-166
Yi, Jun; Ki, Wing-Hung; Tsui, Chi-Ying
Article

Design strategy for step-up charge pumps with variable integer conversion ratios

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 54, (5), 2007, MAY, p. 417-421
Su, Feng; Ki, Wing-Hung
Article

Fast-transient PCCM switching converter with freewheel switching control

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 54, (9), 2007, SEP, p. 825-829
Ma, Dongsheng; Ki, Wing-Hung
Article

A batteryless vibration-based energy harvesting system for ultra low power ubiquitous applications

Chao, Lu; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

A Micro Power Management System and Maximum Output Power Control for Solar Energy Harvesting Applications

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

A stable compensation scheme for low dropout regulator in the absence of ESR

ESSCIRC 2007 - Proceedings of the 33rd European Solid-State Circuits Conference, 2007, p. 416-419
Kwok, Tsz-Fai; Ki, Wing-Hung
Conference paper

An inductor-less micro solar power management system design for energy harvesting applications

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

An ultra fast fixed frequency buck converter with maximum charging current control and adaptive delay compensation for DVS applications

Su, Feng; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

Vibration Energy Scavenging and Management for Ultra Low Power Applications

Chao, Lu; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

2006 8

A voltage-mode PWM buck regulator with end-point prediction

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 53, (4), 2006, APR, p. 294-298
Siu, Man; Mok, Philip Kwok Tai; Leung, Ka Nang; Lam, Yat Hei; Ki, Wing Hung
Article

Integrated low-loss CMOS active rectifier for wirelessly powered devices

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 53, (12), December 2006, p. 1378-1382
Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying
Article

A novel charge based computation system and control strategy for energy harvesting applications

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

Adaptively-biased capacitor-less CMOS low dropout regulator with direct current feedback

Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

An integrated 1.8V to 3.3V regulated voltage doubler using active diodes and dual-loop voltage follower for switch-capacitive load

Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

High efficiency cross-coupled doubler with no reversion loss

Su, Feng; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

Integrated direct output current control switching converter using symmetrically-matched self-biased current sensors

Lam, Yat-Hei; Koon, Suet-Chui; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

Ultra-low voltage power management circuit and computation methodology for energy harvesting applications

Tsui, Chi-Ying; Shao, Hui; Ki, Wing-Hung; Su, Feng
Conference paper

2005 6

A Programmable Integrated Digital Controller for Switching Converters with Dual-band Switching and Complex Pole-zero Compensation

IEEE Journal of Solid-state Circuits, v. 40, (3), March 2005, p. 772-780
Chui, MYK; Ki, Wing Hung; Tsui, Chi Ying
Article

Charge redistribution loss consideration in optimal charge pump design

Ki, Wing Hung; Su, Feng; Tsui, Chi Ying
Conference paper

Gate control strategies for high efficiency charge pumps

Su, Feng; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Hypergraph: An alternative graphical model for computing transfer functions in circuits and systems

2005 International Conference on Communications, Circuits and Systems, v .1-2, 2005, p. 1353-1357
Au, Edward Kwok Sum; Mow, Wai Ho; Ki, Wing Hung
Conference paper

Integrated charge-control single-inductor dual-output step-up/step-down converter

Proceedings - IEEE International Symposium on Circuits and Systems, 2005, p. 3071-3074
Koon, Suet-Chui; Lam, Yat-Hei; Ki, Wing-Hung
Conference paper

Ultra-low voltage power management and computation methodology for energy harvesting applications

Tsui, Chi Ying; Shao, Hui; Ki, Wing Hung; Su, Feng
Conference paper

2004 11

A novel current-mode sensing scheme for magnetic tunnel junction MRAM

IEEE transactions on magnetics, v. 40, 2, Part 1, March 2004, p. 483-488
Au, Edward Kwok Sum; Ki, Wing Hung; Mow, Wai Ho; Hung, ST; Wong, CY
Article

A switched-current sensing architecture for a four-state per cell magnetic tunnel junction MRAM

IEEE TRANSACTIONS on Circuits and SYSTEMS i-regular Papers, v. 51, (11), November 2004, p. 2113-2122
Au, Edward Kwok Sum; Ki, Wing Hung; Mow, Wai Ho; Hung, ST; Wong, CY
Article

An Integrated One-cycle Control Buck Converter with Adaptive Output and Dual Loops for Output Error Correction

IEEE journal of solid-state circuits, v. 39, (1), January 2004, p. 140-149
Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying
Article

A binary-search switched-current sensing scheme for 4-state MRAM

Au, Edward Kwok Sum; Ki, Wing-Hung; Mow, Wai Ho; Hung, S.T.; Wong, C.Y.
Conference paper

A CAD simulator based on loop gain measurement for switching converters

Proceedings - IEEE International Symposium on Circuits and Systems, v. 5, 2004, p.940-943
Ma, Dongsheng; Tam, V.H.S.; Ki, Wing-Hung; Lam, Hylas Y.H.
Conference paper

A dual-band switching digital controller for a buck converter

Chui, M.Y.K.; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

Fast adaptive DC-DC conversion using dual-loop one-cycle control in standard digital CMOS process

Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Integrated 0.9V charge-control switching converter with self-biased current sensor

Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying; Ma, Dongsheng
Conference paper

Loop gain analysis and development of high-speed high-accuracy current sensors for switching converters

2004 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 5, PROCEEDINGS, 2004, p. 828-831
Lam, Hylas Yat Hei; Ki, Wing Hung; Ma, Dongsheng
Conference paper

Minimizing energy consumption of hard real-time systems with simultaneous tasks scheduling and voltage assignment using statistical data

Leung, Lay F.; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

Minimizing Energy Consumption of Multiple-Processors-Core Systems with Simultaneous Tasks Allocation, Scheduling and Voltage Assignment

Leung, Lap F.; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

2003 10

A 1-v 3.5-mw CMOS switched-opamp quadrature IF circuitry for Bluetooth receivers

IEEE journal of solid-state circuits, v. 38, (5), 2003, MAY, p. 805-816
Cheung, Vincent S.L.; Luong, Howard Cam; Chan, Man Sun; Ki, Wing Hung
Article

A pseudo-CCM/DCM SIMO switching converter with freewheel switching

IEEE journal of solid-state circuits, v. 38, (6), 2003, JUN, p. 1007-1014
Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying
Article

An enhanced compact waffle MOSFET with low drain capacitance from a standard submicron CMOS technology

Solid-state electronics, v. 47, (5), 2003, MAY, p. 785-789
Lam, Sang; Mok, Philip Kwok Tai; Ki, Wing Hung; Ko, Ping Keung; Chan, Man Sun
Article

Area-efficient CMOS charge pumps for LCD drivers

IEEE journal of solid-state circuits, v. 38, (10), 2003, OCT, p. 1721-1725
Ying, Tian Rui; Ki, Wing Hung; Chan, Man Sun
Article

Single-inductor multiple-output switching converters with time-multiplexing control in discontinuous conduction mode

IEEE journal of solid-state circuits, v. 38, (1), January 2003, p. 89-100
Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying; Mok, Philip Kwok Tai
Article

An integrated digital controller for DC-DC switching converter with dual-band switching

2003 SYMPOSIUM ON VLSI CIRCUITS, DIGEST OF TECHNICAL PAPERS, 2003, p. 45-48
Chui, Yeung Kei; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Analog Integrated Circuit Design of a Hypertrellis Decoder

Parallel and Distributed Computing, Applications and Technologies, PDCAT Proceedings, 2003, p. 552-556
Hu, Zong-Qq; Mow, Wai Ho; Ki, Wing-Hung
Conference paper

High-sensitivity switched-current sensing circuit for magnetic tunnel junction MRAM

Au, Edward Kwok Sum; Ki, Wing Hung; Mow, Wai Ho; Hung, ST; Wong, CY
Conference paper

Simultaneous task allocation, scheduling and voltage assignment for multiple-processors-core systems using mixed integer nonlinear programming

Leung, Lap Fai; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

Single-inductor dual-input dual-output switching converter for integrated battery charging and power regulation

Lam, Yat Hei; Ki, Wing Hung; Tsui, Chi Ying; Mok, Philip Kwok Tai
Conference paper

2002 13

A 1.0-V V-DD CMOS active-pixel sensor with complementary pixel architecture and pulsewidth modulation fabricated with a 0.25-mu m CMOS process

IEEE journal of solid-state circuits, v. 37, (12), 2002, DEC, p. 1853-1859
Xu, Chao; Zhang, Wei Quan; Ki, Wing Hung; Chan, Man Sun
Article

A 1-V 10.7-MHz switched-opamp, bandpass Sigma Delta modulator using double-sampling finite-gain-compensation technique

IEEE journal of solid-state circuits, v. 37, (10), 2002, OCT, p. 1215-1225
Cheung, Vincent S.L.; Luong, Howard Cam; Ki, Wing Hung
Article

A low-voltage CMOS complementary active pixel sensor (CAPS) fabricated using a 0.25 mu m CMOS technology

IEEE electron device letters, v. 23, (7), 2002, JUL, p. 398-400
Xu, Chao; Ki, Wing Hung; Chan, Man Sun
Article

A 1-V 3.5-mW CMOS switched-opamp quadrature IF circuitry for bluetooth receivers

IEEE Symposium on VLSI Circuits, Digest of Technical Papers, (CIRCUITS SYMP.), 2002, p. 140-143
Cheung, Vincent S.L.; Luong, Howard Cam; Ki, Wing-Hung
Conference paper

A Fast Response Adaptive DC-DC Switching Converter using On-chip Dual-Loop One-cycle control

Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

A highly integrated CMOS image sensor architecture for low voltage applications with deep submicron process

Proceedings - IEEE International Symposium on Circuits and Systems, v. 3, 2002, p. 699-702
Xu, Chao; Zhang, Weiquan; Ki, Wing Hung; Chan, Man Sun
Conference paper

A pseudo-CCM / DCM SIMO switching converter with freewheel switching

Ma, Dongsheng; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

A pseudo-CCM/DCM SIMO switching converter with freewheel switching

Ma, Dongsheng; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

An Enhanced Compact Waffle MOSFET for RF Integrated Circuits

60th Annual Device Research Conference Digest, Santa Barbara, CA, USA, 24-26 June 2002, p. 73-74
Lam, Sang; Ki, Wing Hung; Ko, Ping Keung; Chan, Man Sun
Conference paper

Area efficient CMOS integrated charge pumps

Proceedings - IEEE International Symposium on Circuits and Systems, v. 3, 2002, p. 831-834
Ying, Tian Rui; Ki, Wing-Hung; Chan, Man Sun
Conference paper

Bi-directional integrated charge pumps

Chan, Chit Sang; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Evaluation of the partially-depleted silicon-on-sapphire technology for microwave amplifiers and other prospective applications

2002 3RD INTERNATIONAL CONFERENCE ON MICROWAVE AND MILLIMETER WAVE TECHNOLOGY PROCEEDINGS, 17-19 Aug 2002, p. 171-174
Lam, Sang; Ki, Wing Hung; Shen, Chao; Ko, Ping Keung; Chan, Man Sun
Conference paper

High-isolation bonding pad with depletion-insulation structure for RF/microwave integrated circuits on bulk silicon CMOS

IEEE MTT-S International Microwave Symposium Digest, v. 2, 2002, p. 677-680
Lam, Sang; Ki, Wing Hung; Chan, Man Sun
Conference paper

2001 11

A 1-V CMOS switched-opamp switched-capacitor pseudo-2-path filter

IEEE journal of solid-state circuits, v. 36, (1), 2001, JAN, p. 14-22
Cheung, Vincent Sin Luen; Luong, Howard Cam; Ki, Wing Hung
Article

A 1.8V single-inductor dual-output switching converter for power reduction techniques

Ma, Dongsheng; Ki, Wing-Hung; Tsui, Chi-Ying; Mok, Philip Kwok Tai
Conference paper

A 1V 10.7MHz switched-opamp bandpass ∑Δ modulator using double- sampling finite-gain-compensation technique

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, 2001, p. 52-53+428
Cheung, Vincent Sin Luen; Luong, Howard Cam; Ki, Wing Hung
Conference paper

A single-inductor dual-output integrated DC/DC boost converter for variable voltage scheduling

Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying; Mok, Philip Kwok Tai
Conference paper

Characteristics of RF power amplifiers by 0.5μm SOS CMOS process

IEEE International SOI Conference, 2001, p. 141-142
Lam, Sang; Ki, Wing-Hung; Chan, Man Sun
Conference paper

Dual-loop feedback for fast low dropout regulators

PESC Record - IEEE Annual Power Electronics Specialists Conference, v. 3, 2001, p. 1265-1269
Chen, Wei; Ki, Wing-Hung; Mok, Philip Kwok Tai
Conference paper

Phase-controlled dimmable CFL with PPFC and switching frequency modulation

PESC Record - IEEE Annual Power Electronics Specialists Conference, v. 2, 2001, p. 951-956
Yau, Elson K.F.; Ki, Wing-Hung; Mok, Philip Kwok Tai; Sin, Johnny Kin On
Conference paper

Realization of compact MOSFET structure by waffle-layout

European Solid-State Device Research Conf., Nuremberg, Germany, 119-122
Lam, Sang; Ki, Wing-Hung; Kwok, Ka-Chun; Chan, Mansun
Conference paper

Single-inductor multiple-output switching converters with bipolar outputs

Ma, Dongsheng; Ki, Wing-Hung; Mok, Philip Kwok Tai; Tsui, Chi-Ying
Conference paper

Switched-capacitor power converters with integrated low dropout regulators

Proceedings - IEEE International Symposium on Circuits and Systems, v. 3, 2001, p. 293-296
Chen, Wei; Ki, Wing-Hung; Mok, Philip Kwok Tai; Chan, Man Sun
Conference paper

The silicon-on-sapphire technology for RF integrated circuits: Potential and limitations

IEEE Region 10 International Conference on Electrical and Electronic Technology, 2001, p. 483-486
Lam, Sang; Ki, Wing Hung; Chan, Man Sun
Conference paper

2000 7

Signal flow graph analysis of feedback amplifiers

IEEE TRANSACTIONS on Circuits and SYSTEMS i-fundamental THEORY and APPLICATIONS, v. 47, (6), 2000, JUN, p. 926-933
Ki, Wing Hung
Article

Three-stage large capacitive load amplifier with damping-factor-control frequency compensation

IEEE journal of solid-state circuits, v. 35, (2), 2000, FEB, p. 221-230
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung; Sin, Johnny Kin On
Article

A 1V CMOS switched-opamp switched-capacitor pseudo-2-path filter

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, 2000, p. 154-155
Cheung, Vincent Sin Luen; Luong, Howard Cam; Ki, Wing-Hung
Conference paper

A novel voltage-control scheme for low-voltage DC-DC converters with fast transient recovery

Proceedings of the IEEE 2000 Internaitonal Symposium on Circuits and Systems, v. 1, May 2000, p. 256-259
Lee, Hoi; Mok, Philip Kwok Tai; Ki, Wing Hung
Conference paper

Analysis on an alternative structure of damping-factor-control frequency compensation

ISCAS 2000: IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS - PROCEEDINGS, VOL II: EMERGING TECHNOLOGIES FOR THE 21ST CENTURY, 2000, p. 545-548
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung; Sin, Johnny Kin On
Conference paper

IC controller for phase-controlled dimmable compact fluorescent lamps with closed-loop control

Proceedings - IEEE International Symposium on Circuits and Systems, v. 1, 2000, p. 503-506
Chan, Wilson W.S.; Mok, Philip Kwok Tai; Ng, Alex T.K.; Ki, Wing-Hung; Sin, Johnny Kin On
Conference paper

Lamp Modeling for Design of Dimmable Electronic Ballasts

IEEE Power Electronics Specialists Conference (PESC), v. 3, 2000, p. 1358-1362
Ng, Tai Kai; Ki, Wing-Hung; Mok, Philip Kowk Tai; Sin, Johnny Kin On
Conference paper

1999 6

A novel frequency compensation technique for low-voltage low-dropout regulator

ISCAS '99: PROCEEDINGS OF THE 1999 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 5: SYSTEMS, POWER ELECTRONICS, AND NEURAL NETWORKS, 1999, p. 102-105
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung
Conference paper

Analysis and measurement of DCM power factor correctors

IEEE Power Electronics Specialists Conference (PESC), v. 2, 1999, p. 709-714
Fung, Kin-Siu; Ki, Wing-Hung; Mok, Philip Kwok Tai
Conference paper

Damping-factor-control frequency compensation technique for low-voltage low-power large capacitive load applications

1999 IEEE International Solid-State Circuits Conference, 1999. Digest of Technical Papers. ISSCC, San Francisco, CA, USA, 17 Feb 1999, p. 158-159
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung; Sin, Johnny Kin On
Conference paper

Optimum nested Miller compensation for low-voltage low-power CMOS amplifier design

ISCAS '99: PROCEEDINGS OF THE 1999 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 2: ANALOG AND DIGITAL CIRCUITS, 1999, p. 616-619
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung
Conference paper

Phase-controlled dimmable electronic ballast for fluorescent lamps

IEEE Power Electronics Specialists Conference (PESC), v. 2, 1999, p. 1121-1125
Ki, Wing-Hung; Shi, Jiying; Yau, Elson; Mok, Philip Kwok Tai; Sin, Johnny Kin On
Conference paper

Right-half-plane Zero Removal Technique for Low-voltage Low-power Nested Miller Compensation CMOS Amplifier

Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems, v. 2, 1999, p. 599-602, article number 813179
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung
Conference paper

1998 2

Analysis of subharmonic oscillation of fixed-frequency current-programming switch mode power converters

IEEE TRANSACTIONS on Circuits and SYSTEMS i-fundamental THEORY and APPLICATIONS, v. 45, (1), 1998, JAN, p. 104-108
Ki, Wing Hung
Article

Signal flow graph in loop gain analysis of DC-DC PWM CCM switching converters

IEEE TRANSACTIONS on Circuits and SYSTEMS i-fundamental THEORY and APPLICATIONS, v. 45, (6), 1998, JUN, p. 644-655
Ki, Wing Hung
Article

1997 3

Re-examination of pole splitting of a generic single stage amplifier

IEEE TRANSACTIONS on Circuits and SYSTEMS i-fundamental THEORY and APPLICATIONS, v. 44, (1), 1997, JAN, p. 70-74
Ki, Wing Hung; Der, Lawrence; Lam, Steve
Article

New universal control methods for power factor correction and DC to DC converter applications

IEEE Applied Power Electronics Conference and Exposition - APEC, v.1, 1997, Feb, p.59-65
Hwang, Jeffery; Chee, Alland; Ki, Wing-Hung
Conference paper

Simple method to design resonant circuits of electronic ballast for fluorescent lamps

Proceedings - IEEE International Symposium on Circuits and Systems, v. 3, 1997, p. 1744-1747
Li, Zhi; Mok, Philip Kwok Tai; Ki, Wing-Hung; Sin, Johnny Kin On
Conference paper

1995 1

Optimal capacitance assignment of switched-capacitor biquads

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, v.42, (6), 1995, Jun, p.334-342
Ki, Wing-Hung; Temes, Gabor C.
Article

1994 1

Analog VLSI implementations of auditory wavelet transforms using switched-capacitor circuits

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, v.41, (9), 1994, Sep, p.572-583
Lin, Jyhfong; Ki, Wing-Hung; Edwards, Thomas; Shamma, Shihab
Article

1992 3

Area-efficient gain- and offset-compensated very-large-time-constant SC biquads

IEEE International Symposium on Circuits and Systems, May 1992, p.1187-1190
Ki, Wing-Hung; Temes, G.C.
Conference paper

Cochlear filters design using a parallel dilating-biquads switched-capacitor filter bank

1992 IEEE International Symposium on Circuits and Systems, 1992. ISCAS '92. Proceedings, San Diego, CA, USA, v. 4, 3-6 May 1992, p. 2053-2056
Lin, Jyhfong; Ki, Wing-Hung; Thompson, K.; Shamma, Shihab
Conference paper

Realization of cochlear filter by VLT switched-capacitor biquads

IEEE Int'l Conf. of Acou., Speech, and Sig. Proc., March, 1992, p.II.245-II.248
Lin, Jyhfong; Ki, Wing-Hung; Thompson, K.; Shamma, Shihab
Conference paper

1991 1

Gain- and offset-compensated switched-capacitor filters

IEEE International Symposium on Circuits and Systems, v. 3, 1991, p.1561-1564
Ki, Wing-Hung; Temes, Gabor C.
Conference paper

1990 2

Low-phase-error offset-compensated switched-capacitor integrator

Electronics Letters, v.26, (13), 1990, Jan, p.957-959
Ki, Wing-Hung; Temes, Gabor C.
Article

Offset-compensated switched-capacitor integrators

IEEE International Symposium on Circuits and Systems, v. 4, 1990, p.2829-2832
Ki, Wing-Hung; Temes, Gabor C.
Conference paper

1989 1

Switched-capacitor modulator circuits

Electronics Letters, v.25, (6), 1989, Mar, p.379-381
Ki, Wing-Hung; Temes, Gabor C.
Article

1987 1

Fast CMOS current amplifier and buffer stage

Electronics Letters, v.23, (13), 1987, Jun, p. 696-697
Temes, Gabor C.; Ki, Wing-Hung
Article

Article 2

A 13.56-MHz Single-Input Dual-Output Wireless Power and Data Transfer System for Bio-Implants

IEEE Journal of Solid-State Circuits, March 2024, article number 10473006, p. 1-11
Liu, Yang; Yao, Yuan; Ki, Wing Hung

Analysis of Off-Resonant Flexible Tertiary Coils in Biomedical Implants for Back Telemetry Detection

IEEE Transactions on Circuits and Systems I: Regular Papers, July 2024, article number 10607967, p. 1-13
Sarkar, Sayan; Yao, Yuan; Ki, Wing Hung; Tsui, Chi Ying

Conference paper 6

A 24V-to-1V Hybrid Converter with Adaptive Dead Time Control for Point-of-Load Applications

Proceedings - IEEE International Symposium on Circuits and Systems / IEEE. Piscataway, NJ : IEEE, 2024, article number 10558126
Chang, Guozhen; Liu, Yang; Ki, Wing Hung

A 73.3% Peak Efficiency Isolated DC-DC Converter with Gap-Time Modulation using Pseudo-Hysteresis Control for -12kV/μs Common-Mode Transient Immunity

2024 IEEE Custom Integrated Circuits Conference (CICC) / IEEE. Piscataway, NJ : IEEE, 2024, Article number 10529056
Liu, Yang; Yao, Yuan; Cheng, Lin; Ki, Wing-Hung

A Wide Current Range and Fast Transient Flipped Voltage Follower Based Low Dropout Regulator

Ki, Wing Hung; Law, Man Kay

Adaptive Digitally-Controlled Active Rectifier-Based Receiver for Bioimplants

Proceedings - IEEE International Symposium on Circuits and Systems / Institute of Electrical and Electronics Engineers Inc.. New York, USA : Institute of Electrical and Electronics Engineers Inc., 2024, p. 1-5, Article number 10558205
Sarkar, Sayan; Yao, Yuan; Ki, Wing Hung; Tsui, Chi Ying

D² Buck Converter with Delay-Insensitive Response and Adaptive On-Time Extension During Load Transient

Proceedings - IEEE International Symposium on Circuits and Systems / Institute of Electrical and Electronics Engineers Inc.. New York, USA : Institute of Electrical and Electronics Engineers Inc., 2024, p. 1-4, Article number 10558657
Zhu, Lingfeng; Ki, Wing Hung; Zhong, Yue; Ma, Xiaofei; Jiang, Junmin

Time Domain Analysis of Secondary Stage with Series Resonance Driving Rectifier Load

Proceedings - IEEE International Symposium on Circuits and Systems / Institute of Electrical and Electronics Engineers Inc.. New York, USA : Institute of Electrical and Electronics Engineers Inc., 2024, p. 1-4, Article number 10558705
Ki, Wing Hung; Yao, Yuan; Tsui, Chi Ying

Article 6

A 27 W Wireless Power Transceiver With Compact Single-Stage Regulated Class-E Architecture and Adaptive ZVS Control

IEEE Journal of Solid-State Circuits, November 2023, article number 10335186, p. 1-12
Ma, Xiaofei; Ki, Wing Hung; Lu, Yan

A Flexible Thin-Film Inductor for High-Efficiency Wireless Power Transfer

IEEE Electron Device Letters, v. 44, (3), March 2023, article number 10032542, p. 504-507
Yao, Yuan; Qiu, Xing; Cheng, Yuanjie; Lo, Chi Chuen; Lee, Ricky Shi-wei; Ki, Wing Hung; Tsui, Chi Ying

A Fully-Integrated Micro-Display System With Hybrid Voltage Regulator

IEEE Journal on Emerging and Selected Topics in Circuits and Systems, v. 13, (2), June 2023, article number 10107970, p. 605-616
Jiang, Junmin; Zhang, Xu; Liu, Xun; Liu, Zhaojun; Sun, Liusheng; Yuen, Shing Hin; Chong, Wing Cheung; Ki, Wing Hung; Yue, Chik; Lau, Kei May

A Self-Clocked and Variation-Tolerant Unified Voltage-and-Frequency Regulator for In-Order Executed Digital Loads

IEEE Transactions on Circuits and Systems I: Regular Papers, August 2023, article number 10230861, p. 1-14
Wang, Xuliang; Liu, Xiaosen; Ki, Wing-Hung

Analysis and Prevention of Coupling-Dependent Data Flipping in Wireless Power Transfer Systems

IEEE Transactions on Power Electronics, v. 38, (8), August 2023, article number 10122992, p. 10460-10469
Yao, Yuan; Sarkar, Sayan; Ki, Wing Hung; Tsui, Chi Ying

Energy-Efficient Dual-Node-Upset-Recoverable 12T SRAM for Low-Power Aerospace Applications

IEEE Access, v. 11, 2023, p. 20184-20195
Pal, Soumitra; Chowdary, Gajendranath; Ki, Wing-Hung; Tsui, Chi-Ying

Book chapter 1

Fully Integrated Switched-Capacitor Power Converters

Analog and Mixed-Signal Circuits in Nanoscale CMOS / edited by Rui Paulo da Silva Martins, Pui-In Mak. Cham, Switzerland : Springer, 2023, p. 253-280
Jiang, Junmin; Lu, Yan; Ki, Wing Hung; Martins, R.P.

Conference paper 2

4C 3-Level Hybrid Buck Converter for 12~48V-to-1V Point-of-Load Applications

2023 IEEE Custom Integrated Circuits Conference (CICC) / IEEE. Piscataway, USA : IEEE, 2023, article number 10121260
Lam, Hon Piu; Ki, Wing Hung; Mok, Kwok Tai Philip

A Primary Driver with Real-Time Resonance Tracking for Wireless-Powered Implantable Medical Devices

2023 IEEE Asian Solid-State Circuits Conference, A-SSCC 2023, December 2023, article number 10347922
Meng, Xiaodong; Li, Xing; Yao, Yuan; Tsui, Chi-Ying; Ki, Wing-Hung

Article 4

A 10T Soft-Error-Immune SRAM with Multi-node Upset Recovery for Low-Power Space Applications

IEEE Transactions on Device and Materials Reliability, v. 22, (1), 1 March 2022, article number 9698116, p. 85-88
Pal, Soumitra; Sahay, Shubbam; Ki, Wing Hung; Tsui, Chi Ying

Fully-Integrated Switched-Capacitor Converter With Capacitor Bridging For Improved Current Density

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 69, (10), October 2022, article number 9790872, p. 4063-4067
Zhong, Yue; Ki, Wing-Hung; Jiang, Junmin

Soft-Error-Aware Read-Stability-Enhanced Low-Power 12T SRAM With Multi-Node Upset Recoverability for Aerospace Applications

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 69, (4), April 2022, p. 1560-1570
Pal, Soumitra; Ki, Wing Hung; Tsui, Chi Ying

Ultra-High PSR Output-Capacitor-Free Adaptively-Biased 2-Power-Transistor LDO with 200-mV Dropout

IEEE Solid-State Circuits Letters, v. 5, 3 May 2022, article number 9766420, p. 106-109
Han, Xu; Ki, Wing Hung; Wu, Lianbo; Gao, Yuan

Conference paper 8

A 16-bit Encrypted On-chip Embedded System for Implantable Medical Devices

2022 IEEE International Symposium on Circuits and Systems (ISCAS) / IEEE. Piscataway, NJ : IEEE, 2022, p. 195-199, article number 9937423
Sarkar, Sayan; Jiang, Jingbo; Ki, Wing Hung; Tsui, Chi Ying

A 27W D2D Wireless Power Transfer System with Compact Single-Stage Regulated Class-E Architecture and Adaptive ZVS Control

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, v. 2022-February, February 2022, article number 9731724, p. 238-240
Ma, Xiaofei; Lu, Yan; Ki, Wing Hung

A 65-nm Clock-Domain-Crossing Controller for Digital LDO Regulator with 1.7-ns Response Time

APCCAS 2022 - 2022 IEEE Asia Pacific Conference on Circuits and Systems / IEEE. Piscataway, NJ : IEEE, 2023, p. 284-288, article number 10090264
Wang, Xuliang; Ki, Wing Hung; Mok, Kwok Tai Philip

A self-clocked TDC-based unified clock and voltage regulator with replica frequency-locked loop and hysteresis switching in 65nm CMOS

2022 IEEE Asian Solid-State Circuits Conference, A-SSCC 2022 - Proceedings / IEEE. Piscataway, NJ : IEEE, 2022, p. 14-16, Article number 9980639
Wang, Xuliang; Ki, Wing Hung; Mok, Kwok Tai Philip

Design Strategy of Off-Resonant Tertiary Coils for Uplink Detection in Biomedical Implants

2022 IEEE International Symposium on Circuits and Systems (ISCAS) / IEEE. Piscataway, NJ : IEEE, 2022, p. 156-159, article number 9937926
Sarkar, Sayan; Yao, Yuan; Ki, Wing Hung; Tsui, Chi Ying

Mathematical Analysis of Duty Cycle Variation based Wireless Power Control Technique

2022 Wireless Power Week, WPW 2022 - Proceedings, 2022, p. 599-604
Sarkar, Sayan; Yao, Yuan; Ki, Wing Hung

Partitioning Scheme and Performance Analysis of Distributed Digital Low-Dropout Regulators in SoC

Proceedings - IEEE International Symposium on Circuits and Systems, v. 2022-May, November 2022, article number 9937209, p. 2520-2524
Wang, Xuliang; Ki, Wing-Hung

Split Frequency and Load-Shift Keying Based Bi-directional Data Transfer Technique in Wireless Implantable Medical Devices

44th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, v. 2022, July 2022, article number 9871738, p. 2464-2470
Sarkar, Sayan; Yao, Yuan; Ki, Wing Hung

Article 9

A 6.78 MHz Single-Stage Wireless Power Transmitter Using a 3-Mode Zero-Voltage Switching Class-D PA

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 68, (6), June 2021, article number 9417221, p. 2736-2748
Ge, Xinyuan; Cheng, Lin; Yao, Yuan; Ki, Wing Hung

An Adaptively-Biased Output-Capacitor-Free Low-Dropout Regulator with Supply-Ripple-Subtraction and Pole-Tracking-Compensation

IEEE Transactions on Power Electronics, V. 36, (11), November 2021, article number 9422175, p. 12795-12804
Han, Xu; Wu, Lianbo; Gao, Yuan; Ki, Wing Hung

Circuit Techniques for High Efficiency Fully-Integrated Switched-Capacitor Converters

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 68, (2), February 2021, article number 9302632, p. 556-561
Jiang, Junmin; Liu, Xun; Ki, Wing Hung; Mok, Kwok Tai Philip; Lu, Yan

Design of Soft-Error-Aware SRAM With Multi-Node Upset Recovery for Aerospace Applications

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 68, (6), June 2021, article number 9429940, p. 2470-2480
Pal, Soumitra; Mohapatra, Sayonee; Ki, Wing Hung; Islam, Aminul

Highly Stable Low Power Radiation Hardened Memory-by-Design SRAM for Space Applications

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 68, (6), June 2021, article number 9281113, p. 2147-2151
Pal, Soumitra; Sri, Dodla Divya; Ki, Wing Hung; Islam, Aminul

Radiation-hardened read-decoupled low-power 12T SRAM for space applications

International Journal of Circuit Theory and Applications, v. 49, (11), November 2021, p. 3583-3596
Pal, Soumitra; Dodla, Divya Sri; Ki, Wing Hung; Islam, Aminul

Soft-Error Aware Read-Decoupled SRAM with Multi-node Recovery for Aerospace Applications

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 68, (10), October 2021, p. 3336-3340
Pal, Soumitra; Mohapatra, Sayonee; Ki, Wing Hung; Islam, Aminul

Soft-Error Resilient Read Decoupled SRAM with Multi-Node Upset Recovery for Space Applications

IEEE Transactions on Electron Devices, v. 68, (5), May 2021, article number 9385706, p. 2246-2254
Pal, Soumitra; Sri, Dodla Divya; Ki, Wing Hung; Islam, Aminul

Soft-Error-Immune Read-Stability-Improved SRAM for Multi-Node Upset Tolerance in Space Applications

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 68, (8), August 2021, article number 9472876, p. 3317-3327
Pal, Soumitra; Mohapatra, Sayonee; Ki, Wing Hung; Islam, Aminul

Conference paper 1

Analysis of Inductor Current for Series Resonant Tank at Different Practical Operating Conditions

IECON Proceedings (Industrial Electronics Conference), v. 2021-October, October 2021
Sarkar, Sayan; Yao, Yuan; Ki, Wing Hung

Article 10

40.68 MHz Digital On-Off Delay-Compensated Active Rectifier for WPT of Biomedical Applications

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 67, (12), December 2020, article number 9084122, p. 3307-3311
Pal, Soumitra; Ki, Wing Hung

A 40.68-MHz Active Rectifier With Hybrid Adaptive On/Off Delay-Compensation Scheme for Biomedical Implantable Devices

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 67, (2), February 2020, p. 516-525
Cheng, Lin; Ge, Xinyuan; Hu, Langyu; Yao, Yuan; Ki, Wing Hung; Tsui, Chi Ying

A 6.78-MHz Single-Stage Wireless Charger With Constant-Current Constant-Voltage Charging Technique

IEEE Journal of Solid-State Circuits, v. 55, (4), April 2020, p. 999-1010
Cheng, Lin; Ge, Xinyuan; Ng, Wai Chiu; Ki, Wing Hung; Zheng, Jiawei; Kwok, Tsz Fai; Tsui, Chi Ying; Liu, Ming

A highly stable reliable SRAM cell design for low power applications

Microelectronics Reliability, v. 105, February 2020, article number 113503
Pal, Soumitra; Bose, Subhankar; Ki, Wing Hung; Islam, Aminul

A Multi-Phase Switched-Capacitor Converter for Fully Integrated AMLED Micro Display System

IEEE Transactions on Power Electronics, v. 35, (6), June 2020, article number 8892517, p. 6001-6011
Jiang, Junmin; Liu, Xun; Ki, Wing Hung; Mok, Kwok Tai Philip; Lu, Yan

An NMOS Digital LDO with NAND-Based Analog-Assisted Loop in 28-nm CMOS

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 67, (11), November 2020, article number 9146705, p. 4041-4052
Ma, Xiaofei; Lu, Yan; Li, Qiang; Ki, Wing Hung; Martins, Rui P.

Fast-transient techniques for high-frequency DC-DC converters

Journal of Semiconductors, v. 41, (11), November 2020, article number 112402
Cheng, Lin; Tang, Kui; Ki, Wang Hung; Su, Feng

Half-Select-Free Low-Power Dynamic Loop-Cutting Write Assist SRAM Cell for Space Applications

IEEE Transactions on Electron Devices, v. 67, (1), January 2020, article number 8935501, p. 80-89
Pal, Soumitra; Bose, Subhankar; Ki, Wing Hung; Islam, Aminul

Reliable write assist low power SRAM cell for wireless sensor network applications

IET Circuits, Devices & Systems, v. 14, (2), March 2020, p. 137-147
Pal, Soumitra; Bose, Subhankar; Ki, Wing Hung; Islam, Aminul

Subtraction-Mode Switched-Capacitor Converters With Parasitic Loss Reduction

IEEE Transactions on Power Electronics, v. 35, (2), February 2020, article number 8789393, p. 1200-1204
Jiang, Junmin; Liu, Xun; Huang, Cheng; Ki, Wing Hung; Mok, Kwok Tai Philip; Lu, Yan

Conference paper 4

A Study on Shoot-Through Reduction of DC-DC Converter Pre-Driver using Starving Resistor

IEEE Region 10 Annual International Conference, Proceedings/TENCON, v. 2020, November 2020, article number 9293707, p. 532-537
Sarkar, Sayan; Ki, Wing Hung

Design of a Single-Stage Wireless Charger with 92.3%-Peak-Efficiency for Portable Devices Applications

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, v. 2020, January 2020, article number 90453600, p. 1-2
Cheng, Lin; Ge, Xinyuan; Ng, Wai Chiu; Ki, Wing Hung; Zheng, Jiawei; Kwok, Tsz Fai; Tsui, Chi Ying; Liu, Ming

Mathematical Modelling of Inductor Current in Class-D Amplifier for Wireless Power Transfer

2020 IEEE Wireless Power Transfer Conference, WPTC 2020 / IEEE. New York, NY, USA : IEEE, 2020, p. 399-402, Article number 9295607
Sarkar, Sayan; Ki, Wing Hung

Time Domain Analysis of Class-D Amplifier Driving Series-Series and Series-Parallel Circuits

IEEE Region 10 Annual International Conference, Proceedings/TENCON, v. 2020, November 2020, article number 9293947, p. 159-164
Sarkar, Sayan; Ki, Wing Hung

Article 6

A Low Power Relaxation Oscillator with Switched-Capacitor Frequency-Locked Loop for Wireless Sensor Node Applications

IEEE Solid-State Circuits Letters, v. 2, (12), December 2019, p. 281-284
Meng, Xiaodong; Li, Xing; Cheng, Lin; Tsui, Chi Ying; Ki, Wing Hung

A transient-enhanced output-capacitor-free low-dropout regulator with dynamic miller compensation

IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, v. 27, (1), January 2019, article number 8458206, p. 243-247
Zhan, Chenchang; Cai, Guigang; Ki, Wing Hung

Characterization of Half-Select Free Write Assist 9T SRAM Cell

IEEE Transactions on Electron Devices, v. 66, (11), November 2019, article number 8863651, p. 4745-4752
Pal, Soumitra; Bose, Subhankar; Ki, Wing Hung; Islam, Aminul

Design and Development of Memristor-based RRAM

IET Circuits, Devices & Systems, v. 13, (4), July 2019, p. 548-557
Pal, Soumitra; Gupta, Vivek; Ki, Wing Hung; Islam, Aminul

Design of Power- and Variability-Aware Nonvolatile RRAM Cell Using Memristor as a Memory Element

Journal of the Electron Devices Society, v. 7, 2019, article number 8764438, p. 701-709
Pal, Soumitra; Bose, Subhanker; Ki, Wing Hung; Islam, Aminul

Transmission gate-based 9T SRAM cell for variation resilient low power and reliable internet of things applications

IET Circuits, Devices & Systems, v. 13, (5), August 2019, p. 584-595
Pal, Soumitra; Gupta, Vivek; Ki, Wing Hung; Islam, Aminul

Conference paper 10

A 2.2μW 600kHz Frequency-Locked Relaxation Oscillator with 0.046%/V Voltage and 48.69ppm/°C Temperature Stability for IoT Sensor Node Applications

IEEE Symposium on VLSI Circuits, Digest of Technical Papers, v.2019, June 2019, article number 8778065, p. C44-C45
Meng, Xiaodong; Li, Xing; Zhong, Xiaopeng; Yao, Yuan; Tsui, Chi Ying; Ki, Wing Hung

A 40.68MHz Active Rectifier with Hybrid Delay Compensation Scheme

2018 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2018, 8 January 2019, article number 8605616, p. 501-504
Hu, Langyu; Cheng, Lin; Yao, Yuan; Yim, Tak Sang; Ki, Wing Hung; Tsui, Chi Ying

A 6.78MHz 92.3%-Peak-Efficiency Single-Stage Wireless Charger with CC-CV Charging and On-Chip Bootstrapping Techniques

IEEE Symposium on VLSI Circuits, Digest of Technical Papers, v. 2019, June 2019, article number 8777990, p. C320-C321
Cheng, Lin; Ge, Xinyuan; Ng, Wai Chiu; Ki, Wing Hung; Zheng, Jiawei; Kwok, Tsz Fai; Tsui, Chi Ying; Liu, Ming

A DCM ZVS Class-D Power Amplifier for Wireless Power Transfer Applications

2019 IEEE Asian Solid-State Circuits Conference (A-SSCC): Proceedings of Technical papers / IEEE. Piscataway, New Jersey : IEEE, 2019, p. 43-44, Article number 9056956
Ge, Xinyuan; Cheng, Lin; Ki, Wing Hung

A Simplified PWM Controller for Wireless Power Receiver Using a 3-Mode Reconfigurable Resonant Regulating Rectifier

2018 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2018, 8 January 2019, article number 8605613, p. 473-475
Cheng, Lin; Ge, Xinyuan; Ki, Wing Hung; Tsui, Chi Ying

Analysis and IC Techniques of Wireless Power Transfer Circuits

Proceedings of the Custom Integrated Circuits Conference, v. 2019-April, April 2019, article number 8780329
Ki, Wing Hung

Analyzing Subharmonic Oscillation of Current-Mode Buck Converters with the Circuit-Oriented Geometrical Approach

2019 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2019 - Proceedings / IEEE. Piscataway, New Jersey : IEEE, 2019, p. 37-38
Tang, Kui; Cheng, Lin; Ki, Wing Hung

Polyimide-Based Flexible 3-Coil Inductive Link Design and Optimization

2018 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2018, 8 January 2019, article number 8605614, p. 505-508
Yao, Yuan; Meng, Xiaodong; Tsui, Chi Ying; Ki, Wing Hung

Single-Stage Rectifying Constant-Current Constant-Voltage Charger for Wireless Charging

2019 International SoC Design Conference (ISOCC) / IEEE CAS Society. South Korea : IEEE, 2019, p. 59-60, Article number 9078463
Ki, Wing Hung; Cheng, Lin; Ge, Xinyuan; Tsui, Chi Ying

Spatial Temperature Sensor with Distributed MASH Modulators

Proceedings of the Custom Integrated Circuits Conference, v. 2019-April, April 2019, article number 8780268
Lam, Hon Piu; Ki, Wing Hung

Article 3

A Self-powered Zero-quiescent-current Active Rectifier for Piezoelectric Energy Harvesting

IEICE Electronics Express, v. 15, (18), September 2018, article number 20180739
Ye, Yi-Die; Jiang, Junmin; Ki, Wing Hung

Analysis and Design of a Ripple Reduction Chopper Bandpass Amplifier

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 65, (4), April 2018, p. 1185-1195
Zheng, Jiawei; Ki, Wing-Hung; Tsui, Chi-Ying

Design Considerations of Distributed and Centralized Switched-Capacitor Converters for Power Supply On-Chip

IEEE Journal of Emerging and Selected Topics in Power Electronics, v. 6, (2), June 2018, p. 515-525
Lu, Yan; Jiang, Junmin; Ki, Wing Hung

Book 1

CMOS Integrated Circuit Design for Wireless Power Transfer

Lu, Yan; Ki, Wing Hung

Book chapter 8

Analysis of Coupled-Coils

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 33-51, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung

Circuit Design of CMOS Rectifiers

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 53-96, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung

Conclusions and Future Works

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 159-161, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung

DC-DC Converters for WPT

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 127-141, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung

Introduction of Wireless Power Transfer

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 1-11, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung

Linear Regulators for WPT

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 97-126, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung

Power Amplifiers for WPT

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 143-157, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung

Wireless Power Transfer Systems

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 13-32, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung

Conference paper 5

A Digital SC Converter with High Efficiency and Low Voltage Ripple

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, v. 2018-January, February 2018, p. 289-290
Jiang, Junmin; Ki, Wing Hung; Lu, Yan

A Dual-Output SC Converter with Dynamic Power Allocation for Multi-Core Application Processors

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, v. 2018-January, February 2018, p. 285-286
Jiang, Junmin; Lu, Yan; Liu, Xun; Ki, Wing Hung; Mok, Philip Kwok Tai; Seng-Pan, U.; Martins, Rui Paulo

A fully integrated analog front end for biopotential signal sensing

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 65, (11), November 2018, article number 8438308, p. 3800-3809
Zheng, Jiawei; Ki, Wing Hung; Tsui, Chi Ying

An Indoor Solar Energy Harvester with Ultra-Low-Power Reconfigurable Power-On-Reset-Styled Voltage Detector

2018 IEEE International Symposium on Circuits and Systems (ISCAS), 2018-May, 26 April 2018, article number 8351096
Meng, Xiaodong; Li, Xing; Yao, Yuan; Tsui, Chi Ying; Ki, Wing Hung

Relaxation oscillator with dynamic comparator and slope-boosting technique

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 65, (10), October 2018, article number 8409992, p. 1330-1334
Zheng, Jiawei; Cheng, Lin; Jiang, Junmin; Ki, Wing Hung

Article 9

A 100 MHz Hybrid Supply Modulator With Ripple-Current-Based PWM Control

IEEE Journal of Solid-State Circuits, v. 52, (2), February 2017, article number 7738414, p. 569-578
Tan, Min; Ki, Wing Hung

A 6.78-MHz Single-Stage Wireless Power Receiver Using a 3-Mode Reconfigurable Resonant Regulating Rectifier

IEEE Journal of Solid-State Circuits, v. 52, (5), May 2017, article number 7864386, p. 1412-1423
Cheng, Lin; Ki, Wing Hung; Tsui, Chi Ying

A Dual-Output Wireless Power Transfer System With Active Rectifier and Three-Level Operation

IEEE Transactions on Power Electronics, v. 32, (2), February 2017, article number 7547959, p. 927-930
Lu, Yan; Huang, Mo; Cheng, Lin; Ki, Wing Hung; Seng-pan, U.; Martins, Rui P.

A Multiphase Switched-Capacitor DC-DC Converter Ring With Fast Transient Response and Small Ripple

IEEE Journal of Solid-State Circuits, v. 52, (2), February 2017, article number 7737010, p. 579-591
Lu, Yan; Jiang, Junmin; Ki, Wing Hung

Chopper Capacitively-Coupled Instrumentation Amplifier Capable of Handling Large Electrode Offset for Biopotential Recordings

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 64, (12), December 2017, article number 8012445, p. 1392-1396
Zheng, Jiawei; Ki, Wing Hung; Hu, Langyu; Tsui, Chi Ying

Digital 2-/3-Phase Switched-Capacitor Converter With Ripple Reduction and Efficiency Improvement

IEEE Journal of Solid-State Circuits, v. 52, (7), July 2017, article number 7892868, p. 1836-1848
Jiang, Junmin; Ki, Wing Hung; Lu, Yan

Optic Nerve Stimulation System with Adaptive Wireless Powering and Data Telemetry

Micromachines, v.8, (12), December 2017, article number 368
Li, Xing; Lu, Yan; Meng, Xiaodong; Tsui, Chi-Ying; Ki, Wing-Hung

Predicting Subharmonic Oscillation of Voltage-Mode Switching Converters Using a Circuit-Oriented Geometrical Approach

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 64, (3), March 2017, article number 7792674, p. 717-730
Cheng, Lin; Ki, Wing-Hung; Yang, Fan; Mok, Philip K.T.; Jing, Xiaocheng

Wireless Power Transfer System With ΣΔ Modulated Transmission Power and Fast Load Response for Implantable Medical Devices

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 64, (3), March 2017, article number 7453177, p. 279-283
Li, Xing; Li, Yinping; Tsui, Chi Ying; Ki, Wing Hung

Book chapter 1

Very-High-Frequency and Fast-Transient DC-DC Switching Converters

Selected Topics in Power, RF, and Mixed-Signal ICs / Editors: Yan Lu, China Chi-Seng Lam. River Publishers, 2018, p. 9-60, Ch. 1
Cheng, Lin; Ki, Wing Hung

Conference paper 11

1.7mm² Inductorless Fully Integrated Flipping-capacitor Rectifier (FCR) For Piezoelectric Energy Harvesting with 483% Power-extraction Enhancement

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, v. 60, March 2017, article number 7870416, p. 372-373
Chen, Zhiyuan; Law, Mankay; Mak, Pui-In; Ki, Wing-Hung; Martins, Rui Paulo

A 13.56 MHz On/Off Delay-Compensated Fully-Integrated Active Rectifier for Biomedical Wireless Power Transfer Systems

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, February 2017, article number 7858287, p. 31-32
Cheng, Lin; Ki, Wing Hung; Yim, Tak Sang

A 13.56 MHz One-Stage High-Efficiency 0X/1X R³ Rectifier for Implatable Medical Devices

2017 IEEE International Symposium on Circuits and Systems (ISCAS), September 2017, article number 8050848
Ge, Xinyuan; Cheng, Lin; Ki, Wing Hung

A 30MHz Hybrid Buck Converter with 36mV Droop and 125ns 1% Settling Time for a 1.25A/2ns Load Transient

IEEE International Solid-State Circuits Conference, v. 60, March 2017, article number 7870324, p. 188-189
Cheng, Lin; Ki, Wing Hung

A Dual-symmetrical-output Switched-capacitor Converter with Dynamic Power Cells and Minimized Cross Regulation for Application Processors in 28nm CMOS

IEEE International Solid-State Circuits Conference, v. 60, March 2017, article number 7870402, p. 344-345
Jiang, Junmin; Lu, Yan; Ki, Wing Hung; U seng-pan; Martins, Rui Paulo

A Wireless Power Receiver with a 3-Level Reconfigurable Resonant Regulating Rectifier for Mobile-Charging Applications

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, April 2017, article number 7858288, p. 33-34
Cheng, Lin; Ki, Wing Hung; Tsui, Chi Ying

Closed-Loop Transfer Functions and Frequency-Point Spectrum Simulation of CCM Buck Converters

2016 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2016, January 2017, article number 7804069, p. 698-701
Ki, Wing Hung; Cheng, Lin; Zhan, Chenchang

CMOS Fully-integrated Coulomb Counter Based on Voltage-to-frequency Conversion Algorithm

EDSSC 2017 - 13th IEEE International Conference on Electron Devices and Solid-State Circuits, v. 2017-January, December 2017, p. 1-2
Modak, Dipyaman; Kwok, Tsz Fai; Ki, Wing Hung

Fully-Integrated AMLED Micro Display System With a Hybrid Voltage Regulator

2017 IEEE Asian Solid-State Circuits Conference, A-SSCC 2017 - Proceedings, v. 2017-January, December 2017, p. 277-280
Jiang, Junmin; Sun, Liusheng; Zhang, Xu; Yuen, Shing Hin; Li, Xianbo; Ki, Wing Hung; Yue, Patrick C.; Lau, Kei May

Methods for Measuring Loop-Gain Function of High-Frequency DC-DC Converters

2016 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2016, January 2017, article number 7803945, p. 247-249
Liu, Xun; Jiang, Junmin; Mok, Philip K T; Ki, Wing Hung

Stability Conditions for Hybrid Supply Modulators

Proceedings - IEEE International Symposium on Circuits and Systems, September 2017, article number 8050513, Category numberCFP17ISC-USB; Code 130930
Tan, Min; Ki, Wing Hung

Article 6

Adaptive On/Off Delay-Compensated Active Rectifiers for Wireless Power Transfer Systems

IEEE Journal of Solid-State Circuits, v. 51, (3), March 2016, article number 7403843, p. 712-723
Cheng, Lin; Ki, Wing Hung; Lu, Yan; Yim, Tak Sang

An Efficiency-Enhanced Hybrid Supply Modulator With Single-Capacitor Current-Integration Control

IEEE Journal of Solid-State Circuits, v. 51, (2), February 2016, article number 7328251, p. 533-542
Tan, Min; Ki, Wing Hung

An Implantable Medical Device for Transcorneal Electrical Stimulation: Packaging Structure, Process Flow, and Toxicology Test

IEEE Transactions on Components, Packaging and Manufacturing Technology, v. 6, (8), Aug 2016, article number 7509610, p. 1174-1180
Le, Fuliang; Lo, Chi Chuen; Qiu, Xing; Lee, Shi-wei; Li, Xing; Tsui, Chi Ying; Ki, Wing Hung

An NMOS-LDO Regulated Switched-Capacitor DC-DC Converter With Fast-Response Adaptive-Phase Digital Control

IEEE Transactions on Power Electronics, v. 31, (2), February 2016, article number 7080886, p. 1294-1303
Lu, Yan; Ki, Wing Hung; Yue, Chik

Analysis and Design Considerations of Integrated 3-Level Buck Converters

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 63, (5), May 2016, article number 7469385, p. 671-682
Liu, Xun; Mok, Kwok Tai Philip; Jiang, Junmin; Ki, Wing Hung

Limit Cycle Oscillation Reduction for Digital Low Dropout Regulators

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 63, (9), September 2016, article number 7419894, p. 903-907
Huang, Mo; Lu, Yan; Sin, Saiweng; U, Seng-Pan; Martins, Rui Paulo; Ki, Wing Hung

Conference paper 7

A 0.035mm² 150mA Fast-Response Low-Dropout Regulator Based on Matching-Enhanced Error Amplifier and Multi-Threshold-Controlled Unity-Gain Buffer in 0.13-µm CMOS

2016 IEEE International Symposium on Circuits and Systems (ISCAS), v. 2016-July, July 2016, article number 7539151, p. 2703-2706
Zhan, Chenchang; Ki, Wing Hung; Zheng, Jiawei; Liu, Yonggen

A 6.78MHz 6W Wireless Power Receiver with a 3-Level 1x / 1/2 x / 0x Reconfigurable Resonant Regulating Rectifier

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, v. 59, February 2016, article number 7418064, p. 376-377
Cheng, Lin; Ki, Wing-Hung; Wong, Tatto; Yim, Taksang; Tsui, Chiying

A Digitally-controlled 2-/3-phase 6-ratio Switched-capacitor DC-DC Converter with Adaptive Ripple Reduction and Efficiency Improvements

ESSCIRC Conference 2016: 42nd European Solid-State Circuits Conference, v. 2016-October, October 2016, article number 7598336, p. 441-444
Jiang, Junmin; Lu, Yan; Ki, Wing Hung

A Generic Model for Constructing Three-Stage Amplifiers

2016 IEEE International Symposium on Circuits and Systems (ISCAS), v. 2016-July, July 2016, article number 7527278, p. 466-469
Tan, Min; Ki, Wing Hung

A Low-Power Chopper Bandpass Amplifier for Biopotential Sensors

Proceedings - IEEE International Symposium on Circuits and Systems, v. 2016-July, July 2016, article number 7527230, p. 301-304
Zheng, Jiawei; Ki, Wing Hung; Tsui, Chi Ying

A WLAN 2.4-GHz RF Energy Harvesting System With Reconfigurable Rectifier For Wireless Sensor Network

Proceedings - IEEE International Symposium on Circuits and Systems, v. 2016-July, July 2016, article number 7539059, p. 2362-2365
Zeng, Zizhen; Li, Xing; Bermak, Amine; Tsui, Chi Ying; Ki, Wing Hung

An Indoor Solar Energy Harvesting System Using Dual Mode SIDO Converter with Fully Digital Time-Based MPPT

Proceedings - IEEE International Symposium on Circuits and Systems, v. 2016-July, July 2016, article number 7539057, p. 2354-2357
Meng, Xiaodong; Li, Xing; Tsui, Chi Ying; Ki, Wing Hung

Article 7

A 13.56 MHz Wireless Power Transfer System With Reconfigurable Resonant Regulating Rectifier and Wireless Power Control for Implantable Medical Devices

IEEE Journal of Solid-State Circuits, v. 50, (4), April 2015, article number 7035125, p. 978-989
Li, Xing; Tsui, Chi Ying; Ki, Wing Hung

A 30-Gb/s 1.37-pJ/b CMOS Receiver for Optical Interconnects

Journal of Lightwave Technology, v. 33, (4), February 2015, article number 6985584, p. 778-786
Pan, Quan; Wang, Yipeng; Hou, Zhengxiong; Sun, Li; Lu, Yan; Ki, Wing-Hung; Chiang, Patrick; Yue, Chik Patrick

A Cascode Miller-Compensated Three-Stage Amplifier With Local Impedance Attenuation for Optimized Complex-Pole Control

IEEE Journal of Solid-State Circuits, v. 50, (2), February 2015, p. 440-449
Tan, Min; Ki, Wing-Hung

A Fully-Integrated Low-Dropout Regulator With Full-Spectrum Power Supply Rejection

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 62, (3), March 2015, p. 707-716
Lu, Yan; Wang, Yipeng; Pan, Quan; Ki, Wing Hung; Yue, Patrick C.

On-Chip Compensated Wide Output Range Boost Converter with Fixed-Frequency Adaptive Off-Time Control for LED Driver Applications

IEEE Transactions on Power Electronics, v. 30, (4), April 2015, article number 6945409, p. 2096-2107
Cheng, Lin; Ni, Jinhua; Qian, Yao; Zhou, Minchao; Ki, Wing-Hung; Liu, Bill Yang; Li, Grant; Hong, Zhiliang

Power Management Analysis of Inductively-Powered Implants with 1X/2X Reconfigurable Rectifier

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 62, (3), March 2015, article number 6977994, p. 617-624
Li, Xing; Tsui, Chi-Ying; Ki, Wing-Hung

Reconfigurable Resonant Regulating Rectifier With Primary Equalization for Extended Coupling- and Loading-Range in Bio-Implant Wireless Power Transfer

IEEE Transactions on Biomedical Circuits and Systems, v. 9, (6), December 2015, p. 875-884
Li, Xing; Meng, Xiaodong; Tsui, Chi Ying; Ki, Wing Hung

Conference paper 9

A 123-Phase DC-DC Converter-Ring with Fast-DVS for Microprocessors

2015 IEEE International Solid-state Circuits Conference: Digest of Technical Papers /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 364-365, Article number 7063077
Lu, Yan; Jiang, Junmin; Ki, Wing-Hung; Yue, Chik Patrick; Sin, Sai-Weng; U, Seng-pan; Martins, Rui Paulo

A 12A 50V Half-bridge Gate Driver for Enhancement-mode GaN HEMTs with Digital Dead-time Correction

2015 IEEE International Symposium on Circuits and Systems (ISCAS 2015) /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 1750-1753, Article number 7168992
Chen, Ziang; Wong, Yat To; Yim, Tak Sang; Ki, Wing Hung

A 2-/3-Phase Fully Integrated Switched-Capacitor DC-DC Converter in Bulk CMOS for Energy-Efficient Digital Circuits with 14% Efficiency Improvement

2015 IEEE International Solid-State Circuits Conference (ISSCC 2015) /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 366-367, Article number 7063078
Jiang, Junmin; Lu, Yan; Huang, Cheng; Ki, Wing-Hung; Mok, Philip Kwok Tai

A Fully Integrated IEEE 802.15.7 Visible Light Communication Transmitter with On-chip 8-W 85% Efficiency Boost LED Driver

2015 Symposium on VLSI Circuits (VLSI Circuits 2015) /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. C216-C217, Article number 7231264
Hussain, Babar; Che, Fengyu; Zhang, Feng; Yim, Tak-Sang; Cheng, Lin; Ki, Wing-Hung; Yue, Patrick Chik; Wu, Liang

Analysis of Two-phase On-chip Step-down Switched Capacitor Power Converters

2014 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS 2014) /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 575-578, Article number 7032847
Jiang, Junmin; Lu, Yan; Ki, Wing-Hung

Efficient wireless power transmission technology based on above-CMOS integrated (ACI) high quality inductors

2014 IEEE International Electron Devices Meeting (IEDM), February 2015, article number 7047038, p. 12.4.1-12.4.4
Raju, Salahuddin; Li, Xing; Lu, Yan; Tsui, Chi Ying; Ki, Wing Hung; Chan, Mansun; Yue, Chik Patrick

Fluxless Packaging of an Implantable Medical Device for Transcorneal Electrical Stimulation

Proceedings of the Electronic Packaging Technology Conference, EPTC, v. 2016-February, February 2016, article number 7412282
Le, Fuliang; Lo, Chi Chuen; Qiu, Xing; Lee, Shi-wei; Li, Xing; Tsui, Chi Ying; Ki, Wing Hung

UHF energy harvesting system using reconfigurable rectifier for wireless sensor network

2015 IEEE International Symposium on Circuits and Systems (ISCAS), July 2015, article number 7168578, p. 93-96
Li, Xing; Tsui, Chi Ying; Ki, Wing Hung

Wireless Power Transfer System Using Primary Equalizer for Coupling- and Load-Range Extension in Bio-Implant Applications

2015 IEEE International Solid-State Circuits Conference - (ISSCC) Digest of Technical Papers, Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 228-229
Li, Xing; Tsui, Chi-Ying; Ki, Wing-Hung

Article 4

A 10/30 MHz Fast Reference-Tracking Buck Converter with DDA-Based Type-III Compensator

IEEE Journal of Solid-State Circuits, v. 49, (12), December 2014, article number 6888536, p. 2788-2799
Cheng, Lin; Liu, Yonggen; Ki, Wing Hung

A 13.56 MHz CMOS Active Rectifier With Switched-Offset and Compensated Biasing for Biomedical Wireless Power Transfer Systems

IEEE Transactions on Biomedical Circuits and Systems, v. 8, (3), 2014, article number 6552222, p. 334-344
Lu, Yan; Ki, Wing-Hung

A Novel Single-Inductor Dual-Input Dual-Output DC-DC Converter With PWM Control for Solar Energy Harvesting System

IEEE Transactions on Very Large Scale Integration (VLSI) Systems, v. 22, (8), 2014, article number 6595148, p. 1693-1704
Shao, Hui; Li, Xing; Tsui, Chi-Ying; Ki, Wing Hung

Analysis and Design of Output-Capacitor-Free Low-Dropout Regulators With Low Quiescent Current and High Power Supply Rejection

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 61, (2), February 2014, article number 6717040, p. 625-636
Zhan, Chenchang; Ki, Wing-Hung

Conference paper 14

17.11 A 0.65ns-response-time 3.01ps FOM Fully-integrated Low-dropout Regulator with Full-spectrum Power-supply-rejection for Wideband Communication Systems

2014 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2014, article number 6757446, p. 306-307
Lu, Yan; Ki, Wing-Hung; Yue, Chik Patrick

4.4 A 10/30MHz Wide Duty Cycle Range Buck Converter with DDA-based Type-III Compensator and Fast Reference-tracking Responses for DVS Applications

2014 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2014, article number 6757348, p. 84-86
Cheng, Lin; Liu, Yonggen; Ki, Wing Hung

A 13.56MHz Wireless Power Transfer System with Reconfigurable Resonant Regulating Rectifier and Wireless Power Control for Implantable Medical Devices

28th IEEE Symposium on VLSI Circuits Digest of Technical Papers, Institute of Electrical and Electronics Engineers (IEEE), 2014
Li, Xing; Tsui, Chi Ying; Ki, Wing Hung

A 3-mW 25-Gb/s CMOS Transimpedance Amplifier with Fully Integrated Low-dropout Regulator for 100GbE Systems

Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium, 2014, article number 6851718, p. 275-278
Wang, Yipeng; Lu, Yan; Pan, Quan; Hou, Zhengxiong; Wu, Liang; Ki, Winghung; Yue, Chik Patrick

A 41-mW 30-Gb/s CMOS optical receiver with digitally-tunable cascaded equalization

European Solid-State Circuits Conference, v. 2014, 2014, article number 6942038, p. 127-130
Pan, Quan; Wang, Yipeng; Hou, Zhengxiong; Sun, Li; Wu, Liang; Ki, Wing Hung; Chiang, Patrick; Yue, Chik Patrick

A 48-mW 18-Gb/s Fully Integrated CMOS Optical Receiver with Photodetector and Adaptive Equalizer

2014 Symposium on VLSI Circuits (VLSI-Circuits 2014), Institute of Electrical and Electronics Engineers (IEEE), 2014
Pan, Quan; Hou, Zhengxiong; Wang, Yipeng; Lu, Yan; Ki, Wing Hung; Wang, Keh Chung; Yue, Chik Patrick

A 4μA quiescent current output-capacitor-free low-dropout regulator with fully differential input stage

Proceedings of IEEE International Symposium on Circuits and Systems, v. 2014, 2014, article number 6865670, p. 2457-2460
Tan, Min; Zhan, Chenchang; Ki, Wing Hung

A circuit-oriented geometrical approach in predicting subharmonic oscillation of dc-dc converters with voltage-mode control

Proceedings of IEEE International Symposium on Circuits and Systems, 2014, article number 6865297, p. 962-965
Cheng, Lin; Ki, Wing Hung

A fast transient output-capacitor-free low-dropout regulator with class-AB control stage

2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014, 2014, article number 7061244
Tan, Min; Ki, Wing-Hung

A low-dropout regulator with power supply rejection improvement by bandwidth-zero tracking

IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, 2014, article number 7032730, p. 105-108
Lu, Yan; Yao, Ruo He; Huang, Da Qiang; Su, Julien; Jiang, Junmin; Ki, Wing-Hung

An Adaptive Wireless Powering and Data Telemetry System for Optic Nerve Stimulation

2014 IEEE International Symposium on Circuits and Systems (ISCAS 2014), Institute of Electrical and Electronics Engineers (IEEE), 2014, p. 1404-1407
Li, Xing; Lu, Yan; Tsui, Chi-Ying; Ki, Wing-Hung

Fast-transient-response high-PSR low-dropout regulator based on ultra-fast error amplifier and unity-gain buffer for portable applications

Proceedings of IEEE International Symposium on Circuits and Systems, 2014, article number 6865283, p. 906-909
Liu, Yonggen; Zhan, Chenchang; Ki, Wing Hung

Load-transient enhanced low-dropout regulator based on buffer stage with paralleled current and voltage paths for low-ESR applications

2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014, 2014, article number 7061245
Liu, Yonggen; Zhan, Chenchang; Zheng, Jiawei; Ki, Wing-Hung

Through Silicon Underfill Dispensing for 3D Die/Interposer Stacking

Proceedings - Electronic Components and Technology Conference, September 2014, article number 6897397, p. 919-924
Le, Fuliang; Lee, Ricky Shi-wei; Lau, Kei May; Yue, Chik Patrick; Sin, Johnny Kin On; Mok, Philip Kwok Tai; Ki, Wing Hung; Choi, Hoi Wai

Article 2

A +/- 0.5% Precision On-Chip Frequency Reference With Programmable Switch Array for Crystal-Less Applications

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 60, (10), 2013, article number 6584791, p. 642-646
Lu, Yan; Yuan, Gang; Der, Lawrence; Ki, Wing-Hung; Yue, Chik Patrick

Energy Harvesting and Power Delivery for Implantable Medical Devices

Foundations and trends in electronic design automation, v. 7, (3), August 2013, p. 179-246
Li, Xing; Tsui, Chi-Ying; Ki, Wing Hung

Book chapter 1

Energy Harvesting and Power Delivery for Implantable Medical Devices

Foundations and Trends® in Electronic Design Automation (Book 22) / [Authors]: Chi-Ying Tsui, Xing Li, Wing-Hung Ki. Boston - Delft : Now Publishers Inc, 2013, p. 1-82
Tsui, Chi Ying; Li, Xing; Ki, Wing Hung

Conference paper 6

A 13.56MHz fully integrated 1X/2X active rectifier with compensated bias current for inductively powered devices

Lu, Yan; Li, Xing; Ki, Wing-Hung; Tsui, Chiying; Yue, Patrick Chik

Cost-effective and Eco-friendly LED System-on-a-Chip (SoC)

2013 10th China International Forum on Solid State Lighting, ChinaSSL 2013, 2013, article number 7177356, p. 235-238
Lau, Kei May; Choi, Hoiwai; Ki, Wing-Hung; Lee, Ricky Shi Wei; Mok, Philip Kwok Tai; Sin, Johnny Kin On; Yue, Chik Patrick

Current-Mirror Miller Compensation: An Improved Frequency Compensation Technique for Two-Stage Amplifiers

International Symposium on VLSI Design Automation and Test, v. 2013, 2013, article number 6533876
Tan, Min; Ki, Wing-Hung

High-Side NMOS Power Switch and Bootstrap Driver for High-Frequency Fully-Integrated Converters with Enhanced Efficiency

2013 IEEE International Symposium on Circuits and Systems (ISCAS 2013), Institute of Electrical and Electronics Engineers (IEEE), 2013, p. 693-696
Huang, Cheng; Cheng, Lin; Mok, Philip Kwok Tai; Ki, Wing Hung

Session 21 overview: Power converters

2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers, San Francisco, CA, USA, 17-21 Feb 2013, p. 360-361
Ki, Wing Hung; Berkhout, Marco

Split-output Miller-compensated Two-stage Amplifiers

2013 IEEE International Conference of Electron Devices and Solid-State Circuits (EDSSC 2013), Institute of Electrical and Electronics Engineers (IEEE), 2013
Tan, Min; Ki, Wing Hung

Article 2

An Output-Capacitor-Free Adaptively Biased Low-Dropout Regulator With Subthreshold Undershoot-Reduction for SoC

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 59, May 2012, p. 1119-1131
Zhan, Chenchang; Ki, Wing-Hung

Introduction to the Special Issue on the 2012 IEEE International Solid-State Circuits Conference

IEEE Journal of Solid-State Circuits, v. 47, December 2012, p. 2859-2864
Corsi, Marco; Andreani, Pietro; Ki, Wing-Hung; Chien, George; Kenney, Jack

Book 1

Output Capacitor Free Low Dropout Regulators: Analysis and Design

Zhan, Chenchang; Ki, Wing-Hung

Conference paper 10

A 10/30MHz PWM Buck Converter with an Accuracy-Improved Ramp Generator

2012 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS (APCCAS), Kaohsiung, Taiwan, 2012, p. 420-423
Liu, Yonggen; Zhan, Chenchang; Cheng, Lin; Ki, Wing-Hung

A Chip-Area-Efficient CMOS Low-Dropout Regulator Using Wide-Swing Voltage Buffer with Parabolic Adaptive Biasing for Portable Applications

2012 IEEE Asian Solid State Circuits Conference (A-SSCC), 2012, article number 6522668, p. 233-236
Liu, Yonggen; Zhan, Chenchang; Cheng, Lin; Ki, Wing Hung

A Comparative Study of Hysteretic Voltage-Mode Buck Converters for High Switching Frequency and High Accuracy

2012 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS (APCCAS), 2012, p. 57-60
Lai, King-Man; Zhan, Chenchang; Ki, Wing-Hung

A fast-transient-response hybrid buck converter with automatic and nearly-seamless loop transition for portable applications

Proceedings of IEEE European Solid-State Circuits Conference, Bordeaux, France, 2012, p. 165-168
Liu, Yonggen; Zhan, Chenchang; Ki, Wing Hung

A new charge pump analysis and efficiency optimization method for on-chip charge pump

Li, Xing; Tsui, Chi Ying; Ki, Wing Hung

Analysis and design strategy of on-chip charge pumps for micro-power energy harvesting applications

Ki, Wing-Hung; Lu, Yan; Su, Feng; Tsui, Chi Ying

Continuous-Time Common-Mode Feedback Detection Circuits with Enhanced Detection Accuracy

2012 IEEE INTERNATIONAL CONFERENCE ON ELECTRON DEVICES AND SOLID STATE CIRCUIT (EDSSC), Bangkok, Thailand, 2012
Liu, Yonggen; Zhan, Chenchang; Yim, Tak Sang; Ki, Wing-Hung

Input-Adaptive Dual-Output Power Management Unit for Energy Harvesting Devices

Midwest Symposium on Circuits and Systems, 2012, p. 1080-1083
Lu, Yan; Ki, Wing-Hung; Yue, C. Patrick

Session 5 overview: Audio and power converters: Analog subcommittee

2012 IEEE International Solid-State Circuits Conference, San Francisco, CA, 19-23 Feb 2012, p. 90-91
Ki, Wing Hung; Hurwitz, Jed

Solar energy harvesting system design using re-configurable charge pump

Li, Xing; Tsui, Chi-Ying; Ki, Wing Hung

Article 3

A low dropout regulator with low quiescent current and high power supply rejection over wide range of frequency for SOC

Journal of circuits, systems, and computers, 20, (1), February 2011, p. 1-13
Zhan, Chenchang; Ki, Wing-Hung

Charge Balance Analysis and State Transition Analysis of Hysteretic Voltage Mode Switching Converters

IEEE transactions on circuits and systems. I, Regular papers, v. 58, (5), May 2011, p. 1142-1153
Ki, Wing-Hung; Lai, King-Man; Zhan, Chenchang

Vibration Energy Scavenging System With Maximum Power Tracking for Micropower Applications

IEEE transactions on very large scale integration (VLSI) systems, v. 19, (11), November 2011, p. 2109-2119
Lu, Chao; Tsui, Chi-Ying; Ki, Wing-Hung

Conference paper 6

A 13.56MHz CMOS rectifier with switched-offset for reversion current control

IEEE Symposium on VLSI Circuits, Digest of Technical Papers, 2011, p. 246-247
Lu, Yan; Ki, Wing-Hung; Yi, Jun

An adaptive multi-stage rectifier for RF energy harvesting applications

Li, Xing; Tsui, Chi-Ying; Ki, Wing Hung

An Adaptively Biased Low-Dropout Regulator with Transient Enhancement

2011 16TH ASIA AND SOUTH PACIFIC DESIGN AUTOMATION CONFERENCE (ASP-DAC), 2011
Zhan, Chenchang; Ki, Wing-Hung

An Output-Capacitor-Free Adaptively Biased Low-Dropout Regulator With Sub-Threshold Undershoot-Reduction for SoC

IEEE International Symposium on Circuits & Systems (ISCAS), 2011, p. 45-48
Zhan, Chenchang; Ki, Wing-Hung

Design and analysis of on-chip charge pumps for micro-power energy harvesting applications

Ki, Wing Hung; Lu, Yan; Su, Feng; Tsui, Chi Ying

ES6: Technologies for smart grid and smart meter

2011 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC), San Francisco, CA, 20-24 Feb 2011, p. 533
Jeremy, Hurwitz; Ki, Wing Hung

Article 4

A system-on-chip EPC Gen-2 passive UHF RFID tag with embedded temperature sensor

IEEE Journal of Solid-State Circuits, v. 45, (11), 2010, p. 2404-2420
Yin, Jun; Yi, Jun; Law, Man Kay; Ling, Yunxiao; Lee, Man Chiu; Ng, Kwok Ping; Gao, Bo; Luong, Howard; Bermak, Amine; Chan, Man Sun; Ki, Wing-Hung; Tsui, Chiying; Yuen,Matthew Ming Fai

CMOS Bandgap References With Self-Biased Symmetrically Matched Current-Voltage Mirror and Extension of Sub-1-V Design

IEEE TRANSACTIONS on very LARGE SCALE INTEGRATION (vlsi) SYSTEMS, v. 18, (6), 2010, p. 857-865
Lam, Yat-Hei; Ki, Wing-Hung

Engineering Outreach: A Successful Initiative With Gifted Students in Science and Technology in Hong Kong

IEEE transactions on education, v. 53, (1), 2010, FEB, p. 158-171
Chan, Yuen-Yan; Hui, Diane; Dickinson, Anthony R.; Chu, Dennis; Cheng, David Ki-Wai; Cheung, Edward; Ki, Wing-Hung; Lau, Wing-Hong; Wong, Jasper; Lo, Edward W.C.; Luk, Kwai-Man

Output-Capacitor-Free Adaptively Biased Low-Dropout Regulator for System-on-Chips

IEEE TRANSACTIONS on Circuits and SYSTEMS i-regular Papers, v. 57, (5, Sp. Iss. SI), 2010, MAY, p. 1017-1028
Zhan, Chenchang; Ki, Wing-Hung

Conference paper 8

A 25MHz sign and magnitude converter for analog current mode iterative decoders

Proceedings of the 2010 IEEE Asia Pacific Conference on Circuit and System (APCCAS), 2010, p. 220-223
Lo, Ming Yam; Ki, Wing Hung; Mow, Wai Ho

A single inductor DIDO DC-DC converter for solar energy harvesting applications using band-band control

Shao, Hui; Tsui, Chi Ying; Ki, Wing Hung

A system-on-chip EPC Gen-2 passive UHF RFID tag with embedded temperature sensor

Yin, Jun; Yi, Jun; Law, Man Kay; Ling, Yunxiao; Lee, Man Chiu; Ng, Kwok Ping; Gao, Bo; Luong, Howard C.; Bermak, Amine; Chan, Man Sun; Ki, Wing-Hung; Tsui, Chi-Ying; Yuen, Matthew Ming-Fai

An output-capacitor-free cascode low-dropout regulator with low quiescent current and high power supply rejection

IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, 2010, p. 472-475
Zhan, Chenchang; Ki, Wing-Hung

Freewheel duration adjustment circuits for charge-control single-inductor dual-output switching converters

ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, 2010, p. 2722-2725
Kwan, Kwok-To; Ki, Wing-Hung

Maximizing the Harvested Energy for Micro-power Applications through Efficient MPPT and PMU Design

Shao, Hui; Tsui, Chi Ying; Ki, Wing Hung

Output-Capacitor-Free Adaptively Biased Low-Dropout Regulators

2010 IEEE International Conference of Electron Devices and Solid-State Circuits, EDSSC 2010, 2010
Zhan, Chenchang; Ki, Wing-Hung

System Level Power Optimizations for EPC RFID Tags to Improve Sensitivity Using Load Power Shaping and Operation Scheduling

Ling, Yunxiao; Yi, Jun; Tsui, Chi Ying; Ki, Wing Hung

Article 2

Regulated Switched-Capacitor Doubler With Interleaving Control for Continuous Output Regulation

IEEE journal of solid-state circuits, v. 44, (4), April 2009, p. 1112-1120
Su, Feng; Ki, Wing Hung; Tsui, Chi Ying

The Design of a Micro Power Management System for Applications Using Photovoltaic Cells With the Maximum Output Power Control

IEEE Transactions on Very Large Scale Integration (VLSI) Systems, v. 17, (8), August 2009, p. 1138-1142
Shao, Hui; Tsui, Chi Ying; Ki, Wing Hung

Conference paper 9

A 20MHz switched-current sample-and-hold circuit for current mode analog iterative decoders

Proceedings of the 2009 12th International Symposium on Integrated Circuits, 2009, p. 283-286
Lo, Ming Yam; Ki, Wing-Hung; Mow, Wai Ho

A high-precision low-voltage low dropout regulator for SoC with adaptive biasing

2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009, Taipei, Taiwan, 24-27 May 2009, p. 2521-2524
Zhan, Chenchang; Ki, Wing Hung

A Low Dropout Regulator for SoC with High Power Supply Rejection and Low Quiescent Current

PROCEEDINGS OF THE 2009 12TH INTERNATIONAL SYMPOSIUM ON INTEGRATED CIRCUITS (ISIC 2009), 2009, p. 260-263
Zhan, Chenchang; Ki, Wing-Hung

A single inductor dual input dual output DC-DC converter with hybrid supplies for solar energy harvesting applications

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung

An inductor-less MPPT design for light energy harvesting systems

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung

Digitally assisted quasi-V² hysteretic buck converter with fixed frequency and without using large-ESR capacitor

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, 2009
Su, Feng; Ki, Wing-Hung

Dual-Power-path RF-DC Multi-Output Power Management Unit for RFID Tags

Yi, Jun; Ki, Wing-Hung; Mok, Philip; Tsui, Chi-Ying

Loop Bandwidth Extension Technique for PWM Voltage Mode DC-DC Switching Converters

2009 IEEE ASIAN SOLID-STATE CIRCUITS CONFERENCE (A-SSCC), 2009, p. 325-328
Zhan, Chenchang; Ki, Wing-Hung

Near-threshold startup integrated boost converter with slew rate enhanced error amplifier

Proceedings - IEEE International Symposium on Circuits and Systems, 2009, p. 2409-2412
Wong, Yat-To; Ng, Chik-Wai; Wan, Ho-Ming; Kwong, Kwok-Kuen; Lam, Yat-Hei; Ki, Wing-Hung

Article 2

Component-efficient multiphase switched-capacitor dC-dC converter with configurable conversion ratios for LCD driver applications

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 55, (8), 2008, AUG, p. 753-757
Su, Feng; Ki, Wing-Hung

Ultra fast fixed-frequency hysteretic buck converter with maximum charging current control and adaptive delay compensation for DVS applications

IEEE journal of solid-state circuits, v. 43, (4), April 2008, p. 815-822
Su, Feng; Ki, Wing-Hung; Tsui, Chi-Ying

Conference paper 7

A 0.9V 0.35μm adaptively biased CMOS LDO regulator with fast transient response

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, v. 51, 2008
Lam, Yat-Hei; Ki, Wing-Hung

An energy-adaptive MPPT power management unit for micro-power vibration energy harvesting

Yi, Jun; Su, Feng; Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying

An integrated reconfigurable SC power converter with hybrid gate control scheme for mobile display driver applications

Proceedings of 2008 IEEE Asian Solid-State Circuits Conference, A-SSCC 2008, 2008, p. 169-172
Su, Feng; Ki, Wing-Hung

An SC voltage regulator with novel area-efficient continuous output regulation by dual-branch interleaving control scheme

Su, Feng; Ki, Wing-Hung; Tsui, Chi-Ying

Integrated single-inductor dual-input dual-output boost converter for energy harvesting applications

Sze, Ngok-Man; Su, Feng; Lam, Yat-Hei; Ki, Wing Hung; Tsui, Chi Ying

Threshold voltage start-up boost converter for sub-mA applications

Sze, Ngok Man; Ki, Wing-Hung; Tsui, Chi-Ying

Article 3

Analysis and Design Strategy of UHF Micro-Power CMOS Rectifiers for Micro-Sensor and RFID Applications

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 54, (1), January 2007, p. 153-166
Yi, Jun; Ki, Wing-Hung; Tsui, Chi-Ying

Design strategy for step-up charge pumps with variable integer conversion ratios

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 54, (5), 2007, MAY, p. 417-421
Su, Feng; Ki, Wing-Hung

Fast-transient PCCM switching converter with freewheel switching control

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 54, (9), 2007, SEP, p. 825-829
Ma, Dongsheng; Ki, Wing-Hung

Conference paper 6

A batteryless vibration-based energy harvesting system for ultra low power ubiquitous applications

Chao, Lu; Tsui, Chi-Ying; Ki, Wing-Hung

A Micro Power Management System and Maximum Output Power Control for Solar Energy Harvesting Applications

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung

A stable compensation scheme for low dropout regulator in the absence of ESR

ESSCIRC 2007 - Proceedings of the 33rd European Solid-State Circuits Conference, 2007, p. 416-419
Kwok, Tsz-Fai; Ki, Wing-Hung

An inductor-less micro solar power management system design for energy harvesting applications

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung

An ultra fast fixed frequency buck converter with maximum charging current control and adaptive delay compensation for DVS applications

Su, Feng; Ki, Wing-Hung; Tsui, Chi-Ying

Vibration Energy Scavenging and Management for Ultra Low Power Applications

Chao, Lu; Tsui, Chi-Ying; Ki, Wing-Hung

Article 2

A voltage-mode PWM buck regulator with end-point prediction

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 53, (4), 2006, APR, p. 294-298
Siu, Man; Mok, Philip Kwok Tai; Leung, Ka Nang; Lam, Yat Hei; Ki, Wing Hung

Integrated low-loss CMOS active rectifier for wirelessly powered devices

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 53, (12), December 2006, p. 1378-1382
Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying

Conference paper 6

A novel charge based computation system and control strategy for energy harvesting applications

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung

Adaptively-biased capacitor-less CMOS low dropout regulator with direct current feedback

Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying

An integrated 1.8V to 3.3V regulated voltage doubler using active diodes and dual-loop voltage follower for switch-capacitive load

Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying

High efficiency cross-coupled doubler with no reversion loss

Su, Feng; Ki, Wing-Hung; Tsui, Chi-Ying

Integrated direct output current control switching converter using symmetrically-matched self-biased current sensors

Lam, Yat-Hei; Koon, Suet-Chui; Ki, Wing-Hung; Tsui, Chi-Ying

Ultra-low voltage power management circuit and computation methodology for energy harvesting applications

Tsui, Chi-Ying; Shao, Hui; Ki, Wing-Hung; Su, Feng

Article 1

A Programmable Integrated Digital Controller for Switching Converters with Dual-band Switching and Complex Pole-zero Compensation

IEEE Journal of Solid-state Circuits, v. 40, (3), March 2005, p. 772-780
Chui, MYK; Ki, Wing Hung; Tsui, Chi Ying

Conference paper 5

Charge redistribution loss consideration in optimal charge pump design

Ki, Wing Hung; Su, Feng; Tsui, Chi Ying

Gate control strategies for high efficiency charge pumps

Su, Feng; Ki, Wing Hung; Tsui, Chi Ying

Hypergraph: An alternative graphical model for computing transfer functions in circuits and systems

2005 International Conference on Communications, Circuits and Systems, v .1-2, 2005, p. 1353-1357
Au, Edward Kwok Sum; Mow, Wai Ho; Ki, Wing Hung

Integrated charge-control single-inductor dual-output step-up/step-down converter

Proceedings - IEEE International Symposium on Circuits and Systems, 2005, p. 3071-3074
Koon, Suet-Chui; Lam, Yat-Hei; Ki, Wing-Hung

Ultra-low voltage power management and computation methodology for energy harvesting applications

Tsui, Chi Ying; Shao, Hui; Ki, Wing Hung; Su, Feng

Article 3

A novel current-mode sensing scheme for magnetic tunnel junction MRAM

IEEE transactions on magnetics, v. 40, 2, Part 1, March 2004, p. 483-488
Au, Edward Kwok Sum; Ki, Wing Hung; Mow, Wai Ho; Hung, ST; Wong, CY

A switched-current sensing architecture for a four-state per cell magnetic tunnel junction MRAM

IEEE TRANSACTIONS on Circuits and SYSTEMS i-regular Papers, v. 51, (11), November 2004, p. 2113-2122
Au, Edward Kwok Sum; Ki, Wing Hung; Mow, Wai Ho; Hung, ST; Wong, CY

An Integrated One-cycle Control Buck Converter with Adaptive Output and Dual Loops for Output Error Correction

IEEE journal of solid-state circuits, v. 39, (1), January 2004, p. 140-149
Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying

Conference paper 8

A binary-search switched-current sensing scheme for 4-state MRAM

Au, Edward Kwok Sum; Ki, Wing-Hung; Mow, Wai Ho; Hung, S.T.; Wong, C.Y.

A CAD simulator based on loop gain measurement for switching converters

Proceedings - IEEE International Symposium on Circuits and Systems, v. 5, 2004, p.940-943
Ma, Dongsheng; Tam, V.H.S.; Ki, Wing-Hung; Lam, Hylas Y.H.

A dual-band switching digital controller for a buck converter

Chui, M.Y.K.; Ki, Wing-Hung; Tsui, Chi-Ying

Fast adaptive DC-DC conversion using dual-loop one-cycle control in standard digital CMOS process

Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying

Integrated 0.9V charge-control switching converter with self-biased current sensor

Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying; Ma, Dongsheng

Loop gain analysis and development of high-speed high-accuracy current sensors for switching converters

2004 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 5, PROCEEDINGS, 2004, p. 828-831
Lam, Hylas Yat Hei; Ki, Wing Hung; Ma, Dongsheng

Minimizing energy consumption of hard real-time systems with simultaneous tasks scheduling and voltage assignment using statistical data

Leung, Lay F.; Tsui, Chi Ying; Ki, Wing Hung

Minimizing Energy Consumption of Multiple-Processors-Core Systems with Simultaneous Tasks Allocation, Scheduling and Voltage Assignment

Leung, Lap F.; Tsui, Chi Ying; Ki, Wing Hung

Article 5

A 1-v 3.5-mw CMOS switched-opamp quadrature IF circuitry for Bluetooth receivers

IEEE journal of solid-state circuits, v. 38, (5), 2003, MAY, p. 805-816
Cheung, Vincent S.L.; Luong, Howard Cam; Chan, Man Sun; Ki, Wing Hung

A pseudo-CCM/DCM SIMO switching converter with freewheel switching

IEEE journal of solid-state circuits, v. 38, (6), 2003, JUN, p. 1007-1014
Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying

An enhanced compact waffle MOSFET with low drain capacitance from a standard submicron CMOS technology

Solid-state electronics, v. 47, (5), 2003, MAY, p. 785-789
Lam, Sang; Mok, Philip Kwok Tai; Ki, Wing Hung; Ko, Ping Keung; Chan, Man Sun

Area-efficient CMOS charge pumps for LCD drivers

IEEE journal of solid-state circuits, v. 38, (10), 2003, OCT, p. 1721-1725
Ying, Tian Rui; Ki, Wing Hung; Chan, Man Sun

Single-inductor multiple-output switching converters with time-multiplexing control in discontinuous conduction mode

IEEE journal of solid-state circuits, v. 38, (1), January 2003, p. 89-100
Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying; Mok, Philip Kwok Tai

Conference paper 5

An integrated digital controller for DC-DC switching converter with dual-band switching

2003 SYMPOSIUM ON VLSI CIRCUITS, DIGEST OF TECHNICAL PAPERS, 2003, p. 45-48
Chui, Yeung Kei; Ki, Wing Hung; Tsui, Chi Ying

Analog Integrated Circuit Design of a Hypertrellis Decoder

Parallel and Distributed Computing, Applications and Technologies, PDCAT Proceedings, 2003, p. 552-556
Hu, Zong-Qq; Mow, Wai Ho; Ki, Wing-Hung

High-sensitivity switched-current sensing circuit for magnetic tunnel junction MRAM

Au, Edward Kwok Sum; Ki, Wing Hung; Mow, Wai Ho; Hung, ST; Wong, CY

Simultaneous task allocation, scheduling and voltage assignment for multiple-processors-core systems using mixed integer nonlinear programming

Leung, Lap Fai; Tsui, Chi Ying; Ki, Wing Hung

Single-inductor dual-input dual-output switching converter for integrated battery charging and power regulation

Lam, Yat Hei; Ki, Wing Hung; Tsui, Chi Ying; Mok, Philip Kwok Tai

Article 3

A 1.0-V V-DD CMOS active-pixel sensor with complementary pixel architecture and pulsewidth modulation fabricated with a 0.25-mu m CMOS process

IEEE journal of solid-state circuits, v. 37, (12), 2002, DEC, p. 1853-1859
Xu, Chao; Zhang, Wei Quan; Ki, Wing Hung; Chan, Man Sun

A 1-V 10.7-MHz switched-opamp, bandpass Sigma Delta modulator using double-sampling finite-gain-compensation technique

IEEE journal of solid-state circuits, v. 37, (10), 2002, OCT, p. 1215-1225
Cheung, Vincent S.L.; Luong, Howard Cam; Ki, Wing Hung

A low-voltage CMOS complementary active pixel sensor (CAPS) fabricated using a 0.25 mu m CMOS technology

IEEE electron device letters, v. 23, (7), 2002, JUL, p. 398-400
Xu, Chao; Ki, Wing Hung; Chan, Man Sun

Conference paper 10

A 1-V 3.5-mW CMOS switched-opamp quadrature IF circuitry for bluetooth receivers

IEEE Symposium on VLSI Circuits, Digest of Technical Papers, (CIRCUITS SYMP.), 2002, p. 140-143
Cheung, Vincent S.L.; Luong, Howard Cam; Ki, Wing-Hung

A Fast Response Adaptive DC-DC Switching Converter using On-chip Dual-Loop One-cycle control

Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying

A highly integrated CMOS image sensor architecture for low voltage applications with deep submicron process

Proceedings - IEEE International Symposium on Circuits and Systems, v. 3, 2002, p. 699-702
Xu, Chao; Zhang, Weiquan; Ki, Wing Hung; Chan, Man Sun

A pseudo-CCM / DCM SIMO switching converter with freewheel switching

Ma, Dongsheng; Ki, Wing-Hung; Tsui, Chi-Ying

A pseudo-CCM/DCM SIMO switching converter with freewheel switching

Ma, Dongsheng; Ki, Wing-Hung; Tsui, Chi-Ying

An Enhanced Compact Waffle MOSFET for RF Integrated Circuits

60th Annual Device Research Conference Digest, Santa Barbara, CA, USA, 24-26 June 2002, p. 73-74
Lam, Sang; Ki, Wing Hung; Ko, Ping Keung; Chan, Man Sun

Area efficient CMOS integrated charge pumps

Proceedings - IEEE International Symposium on Circuits and Systems, v. 3, 2002, p. 831-834
Ying, Tian Rui; Ki, Wing-Hung; Chan, Man Sun

Bi-directional integrated charge pumps

Chan, Chit Sang; Ki, Wing Hung; Tsui, Chi Ying

Evaluation of the partially-depleted silicon-on-sapphire technology for microwave amplifiers and other prospective applications

2002 3RD INTERNATIONAL CONFERENCE ON MICROWAVE AND MILLIMETER WAVE TECHNOLOGY PROCEEDINGS, 17-19 Aug 2002, p. 171-174
Lam, Sang; Ki, Wing Hung; Shen, Chao; Ko, Ping Keung; Chan, Man Sun

High-isolation bonding pad with depletion-insulation structure for RF/microwave integrated circuits on bulk silicon CMOS

IEEE MTT-S International Microwave Symposium Digest, v. 2, 2002, p. 677-680
Lam, Sang; Ki, Wing Hung; Chan, Man Sun

Article 1

A 1-V CMOS switched-opamp switched-capacitor pseudo-2-path filter

IEEE journal of solid-state circuits, v. 36, (1), 2001, JAN, p. 14-22
Cheung, Vincent Sin Luen; Luong, Howard Cam; Ki, Wing Hung

Conference paper 10

A 1.8V single-inductor dual-output switching converter for power reduction techniques

Ma, Dongsheng; Ki, Wing-Hung; Tsui, Chi-Ying; Mok, Philip Kwok Tai

A 1V 10.7MHz switched-opamp bandpass ∑Δ modulator using double- sampling finite-gain-compensation technique

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, 2001, p. 52-53+428
Cheung, Vincent Sin Luen; Luong, Howard Cam; Ki, Wing Hung

A single-inductor dual-output integrated DC/DC boost converter for variable voltage scheduling

Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying; Mok, Philip Kwok Tai

Characteristics of RF power amplifiers by 0.5μm SOS CMOS process

IEEE International SOI Conference, 2001, p. 141-142
Lam, Sang; Ki, Wing-Hung; Chan, Man Sun

Dual-loop feedback for fast low dropout regulators

PESC Record - IEEE Annual Power Electronics Specialists Conference, v. 3, 2001, p. 1265-1269
Chen, Wei; Ki, Wing-Hung; Mok, Philip Kwok Tai

Phase-controlled dimmable CFL with PPFC and switching frequency modulation

PESC Record - IEEE Annual Power Electronics Specialists Conference, v. 2, 2001, p. 951-956
Yau, Elson K.F.; Ki, Wing-Hung; Mok, Philip Kwok Tai; Sin, Johnny Kin On

Realization of compact MOSFET structure by waffle-layout

European Solid-State Device Research Conf., Nuremberg, Germany, 119-122
Lam, Sang; Ki, Wing-Hung; Kwok, Ka-Chun; Chan, Mansun

Single-inductor multiple-output switching converters with bipolar outputs

Ma, Dongsheng; Ki, Wing-Hung; Mok, Philip Kwok Tai; Tsui, Chi-Ying

Switched-capacitor power converters with integrated low dropout regulators

Proceedings - IEEE International Symposium on Circuits and Systems, v. 3, 2001, p. 293-296
Chen, Wei; Ki, Wing-Hung; Mok, Philip Kwok Tai; Chan, Man Sun

The silicon-on-sapphire technology for RF integrated circuits: Potential and limitations

IEEE Region 10 International Conference on Electrical and Electronic Technology, 2001, p. 483-486
Lam, Sang; Ki, Wing Hung; Chan, Man Sun

Article 2

Signal flow graph analysis of feedback amplifiers

IEEE TRANSACTIONS on Circuits and SYSTEMS i-fundamental THEORY and APPLICATIONS, v. 47, (6), 2000, JUN, p. 926-933
Ki, Wing Hung

Three-stage large capacitive load amplifier with damping-factor-control frequency compensation

IEEE journal of solid-state circuits, v. 35, (2), 2000, FEB, p. 221-230
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung; Sin, Johnny Kin On

Conference paper 5

A 1V CMOS switched-opamp switched-capacitor pseudo-2-path filter

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, 2000, p. 154-155
Cheung, Vincent Sin Luen; Luong, Howard Cam; Ki, Wing-Hung

A novel voltage-control scheme for low-voltage DC-DC converters with fast transient recovery

Proceedings of the IEEE 2000 Internaitonal Symposium on Circuits and Systems, v. 1, May 2000, p. 256-259
Lee, Hoi; Mok, Philip Kwok Tai; Ki, Wing Hung

Analysis on an alternative structure of damping-factor-control frequency compensation

ISCAS 2000: IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS - PROCEEDINGS, VOL II: EMERGING TECHNOLOGIES FOR THE 21ST CENTURY, 2000, p. 545-548
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung; Sin, Johnny Kin On

IC controller for phase-controlled dimmable compact fluorescent lamps with closed-loop control

Proceedings - IEEE International Symposium on Circuits and Systems, v. 1, 2000, p. 503-506
Chan, Wilson W.S.; Mok, Philip Kwok Tai; Ng, Alex T.K.; Ki, Wing-Hung; Sin, Johnny Kin On

Lamp Modeling for Design of Dimmable Electronic Ballasts

IEEE Power Electronics Specialists Conference (PESC), v. 3, 2000, p. 1358-1362
Ng, Tai Kai; Ki, Wing-Hung; Mok, Philip Kowk Tai; Sin, Johnny Kin On

Conference paper 6

A novel frequency compensation technique for low-voltage low-dropout regulator

ISCAS '99: PROCEEDINGS OF THE 1999 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 5: SYSTEMS, POWER ELECTRONICS, AND NEURAL NETWORKS, 1999, p. 102-105
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung

Analysis and measurement of DCM power factor correctors

IEEE Power Electronics Specialists Conference (PESC), v. 2, 1999, p. 709-714
Fung, Kin-Siu; Ki, Wing-Hung; Mok, Philip Kwok Tai

Damping-factor-control frequency compensation technique for low-voltage low-power large capacitive load applications

1999 IEEE International Solid-State Circuits Conference, 1999. Digest of Technical Papers. ISSCC, San Francisco, CA, USA, 17 Feb 1999, p. 158-159
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung; Sin, Johnny Kin On

Optimum nested Miller compensation for low-voltage low-power CMOS amplifier design

ISCAS '99: PROCEEDINGS OF THE 1999 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 2: ANALOG AND DIGITAL CIRCUITS, 1999, p. 616-619
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung

Phase-controlled dimmable electronic ballast for fluorescent lamps

IEEE Power Electronics Specialists Conference (PESC), v. 2, 1999, p. 1121-1125
Ki, Wing-Hung; Shi, Jiying; Yau, Elson; Mok, Philip Kwok Tai; Sin, Johnny Kin On

Right-half-plane Zero Removal Technique for Low-voltage Low-power Nested Miller Compensation CMOS Amplifier

Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems, v. 2, 1999, p. 599-602, article number 813179
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung

Article 2

Analysis of subharmonic oscillation of fixed-frequency current-programming switch mode power converters

IEEE TRANSACTIONS on Circuits and SYSTEMS i-fundamental THEORY and APPLICATIONS, v. 45, (1), 1998, JAN, p. 104-108
Ki, Wing Hung

Signal flow graph in loop gain analysis of DC-DC PWM CCM switching converters

IEEE TRANSACTIONS on Circuits and SYSTEMS i-fundamental THEORY and APPLICATIONS, v. 45, (6), 1998, JUN, p. 644-655
Ki, Wing Hung

Article 1

Re-examination of pole splitting of a generic single stage amplifier

IEEE TRANSACTIONS on Circuits and SYSTEMS i-fundamental THEORY and APPLICATIONS, v. 44, (1), 1997, JAN, p. 70-74
Ki, Wing Hung; Der, Lawrence; Lam, Steve

Conference paper 2

New universal control methods for power factor correction and DC to DC converter applications

IEEE Applied Power Electronics Conference and Exposition - APEC, v.1, 1997, Feb, p.59-65
Hwang, Jeffery; Chee, Alland; Ki, Wing-Hung

Simple method to design resonant circuits of electronic ballast for fluorescent lamps

Proceedings - IEEE International Symposium on Circuits and Systems, v. 3, 1997, p. 1744-1747
Li, Zhi; Mok, Philip Kwok Tai; Ki, Wing-Hung; Sin, Johnny Kin On

Article 1

Optimal capacitance assignment of switched-capacitor biquads

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, v.42, (6), 1995, Jun, p.334-342
Ki, Wing-Hung; Temes, Gabor C.

Article 1

Analog VLSI implementations of auditory wavelet transforms using switched-capacitor circuits

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, v.41, (9), 1994, Sep, p.572-583
Lin, Jyhfong; Ki, Wing-Hung; Edwards, Thomas; Shamma, Shihab

Conference paper 3

Area-efficient gain- and offset-compensated very-large-time-constant SC biquads

IEEE International Symposium on Circuits and Systems, May 1992, p.1187-1190
Ki, Wing-Hung; Temes, G.C.

Cochlear filters design using a parallel dilating-biquads switched-capacitor filter bank

1992 IEEE International Symposium on Circuits and Systems, 1992. ISCAS '92. Proceedings, San Diego, CA, USA, v. 4, 3-6 May 1992, p. 2053-2056
Lin, Jyhfong; Ki, Wing-Hung; Thompson, K.; Shamma, Shihab

Realization of cochlear filter by VLT switched-capacitor biquads

IEEE Int'l Conf. of Acou., Speech, and Sig. Proc., March, 1992, p.II.245-II.248
Lin, Jyhfong; Ki, Wing-Hung; Thompson, K.; Shamma, Shihab

Conference paper 1

Gain- and offset-compensated switched-capacitor filters

IEEE International Symposium on Circuits and Systems, v. 3, 1991, p.1561-1564
Ki, Wing-Hung; Temes, Gabor C.

Article 1

Low-phase-error offset-compensated switched-capacitor integrator

Electronics Letters, v.26, (13), 1990, Jan, p.957-959
Ki, Wing-Hung; Temes, Gabor C.

Conference paper 1

Offset-compensated switched-capacitor integrators

IEEE International Symposium on Circuits and Systems, v. 4, 1990, p.2829-2832
Ki, Wing-Hung; Temes, Gabor C.

Article 1

Switched-capacitor modulator circuits

Electronics Letters, v.25, (6), 1989, Mar, p.379-381
Ki, Wing-Hung; Temes, Gabor C.

Article 1

Fast CMOS current amplifier and buffer stage

Electronics Letters, v.23, (13), 1987, Jun, p. 696-697
Temes, Gabor C.; Ki, Wing-Hung

2018 17

A Self-powered Zero-quiescent-current Active Rectifier for Piezoelectric Energy Harvesting

IEICE Electronics Express, v. 15, (18), September 2018, article number 20180739
Ye, Yi-Die; Jiang, Junmin; Ki, Wing Hung
Article

Analysis and Design of a Ripple Reduction Chopper Bandpass Amplifier

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 65, (4), April 2018, p. 1185-1195
Zheng, Jiawei; Ki, Wing-Hung; Tsui, Chi-Ying
Article

Design Considerations of Distributed and Centralized Switched-Capacitor Converters for Power Supply On-Chip

IEEE Journal of Emerging and Selected Topics in Power Electronics, v. 6, (2), June 2018, p. 515-525
Lu, Yan; Jiang, Junmin; Ki, Wing Hung
Article

CMOS Integrated Circuit Design for Wireless Power Transfer

Lu, Yan; Ki, Wing Hung
Book

Analysis of Coupled-Coils

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 33-51, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

Circuit Design of CMOS Rectifiers

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 53-96, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

Conclusions and Future Works

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 159-161, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

DC-DC Converters for WPT

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 127-141, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

Introduction of Wireless Power Transfer

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 1-11, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

Linear Regulators for WPT

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 97-126, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

Power Amplifiers for WPT

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 143-157, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

Wireless Power Transfer Systems

CMOS Integrated Circuit Design for Wireless Power Transfer / Yan Lu, Wing-Hung Ki. Singapore : Springer, 2018, p. 13-32, Book series: Analog Circuits and Signal Processing
Lu, Yan; Ki, Wing Hung
Book chapter

A Digital SC Converter with High Efficiency and Low Voltage Ripple

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, v. 2018-January, February 2018, p. 289-290
Jiang, Junmin; Ki, Wing Hung; Lu, Yan
Conference paper

A Dual-Output SC Converter with Dynamic Power Allocation for Multi-Core Application Processors

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, v. 2018-January, February 2018, p. 285-286
Jiang, Junmin; Lu, Yan; Liu, Xun; Ki, Wing Hung; Mok, Philip Kwok Tai; Seng-Pan, U.; Martins, Rui Paulo
Conference paper

A fully integrated analog front end for biopotential signal sensing

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 65, (11), November 2018, article number 8438308, p. 3800-3809
Zheng, Jiawei; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

An Indoor Solar Energy Harvester with Ultra-Low-Power Reconfigurable Power-On-Reset-Styled Voltage Detector

2018 IEEE International Symposium on Circuits and Systems (ISCAS), 2018-May, 26 April 2018, article number 8351096
Meng, Xiaodong; Li, Xing; Yao, Yuan; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

Relaxation oscillator with dynamic comparator and slope-boosting technique

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 65, (10), October 2018, article number 8409992, p. 1330-1334
Zheng, Jiawei; Cheng, Lin; Jiang, Junmin; Ki, Wing Hung
Conference paper

2017 21

A 100 MHz Hybrid Supply Modulator With Ripple-Current-Based PWM Control

IEEE Journal of Solid-State Circuits, v. 52, (2), February 2017, article number 7738414, p. 569-578
Tan, Min; Ki, Wing Hung
Article

A 6.78-MHz Single-Stage Wireless Power Receiver Using a 3-Mode Reconfigurable Resonant Regulating Rectifier

IEEE Journal of Solid-State Circuits, v. 52, (5), May 2017, article number 7864386, p. 1412-1423
Cheng, Lin; Ki, Wing Hung; Tsui, Chi Ying
Article

A Dual-Output Wireless Power Transfer System With Active Rectifier and Three-Level Operation

IEEE Transactions on Power Electronics, v. 32, (2), February 2017, article number 7547959, p. 927-930
Lu, Yan; Huang, Mo; Cheng, Lin; Ki, Wing Hung; Seng-pan, U.; Martins, Rui P.
Article

A Multiphase Switched-Capacitor DC-DC Converter Ring With Fast Transient Response and Small Ripple

IEEE Journal of Solid-State Circuits, v. 52, (2), February 2017, article number 7737010, p. 579-591
Lu, Yan; Jiang, Junmin; Ki, Wing Hung
Article

Chopper Capacitively-Coupled Instrumentation Amplifier Capable of Handling Large Electrode Offset for Biopotential Recordings

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 64, (12), December 2017, article number 8012445, p. 1392-1396
Zheng, Jiawei; Ki, Wing Hung; Hu, Langyu; Tsui, Chi Ying
Article

Digital 2-/3-Phase Switched-Capacitor Converter With Ripple Reduction and Efficiency Improvement

IEEE Journal of Solid-State Circuits, v. 52, (7), July 2017, article number 7892868, p. 1836-1848
Jiang, Junmin; Ki, Wing Hung; Lu, Yan
Article

Optic Nerve Stimulation System with Adaptive Wireless Powering and Data Telemetry

Micromachines, v.8, (12), December 2017, article number 368
Li, Xing; Lu, Yan; Meng, Xiaodong; Tsui, Chi-Ying; Ki, Wing-Hung
Article

Predicting Subharmonic Oscillation of Voltage-Mode Switching Converters Using a Circuit-Oriented Geometrical Approach

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 64, (3), March 2017, article number 7792674, p. 717-730
Cheng, Lin; Ki, Wing-Hung; Yang, Fan; Mok, Philip K.T.; Jing, Xiaocheng
Article

Wireless Power Transfer System With ΣΔ Modulated Transmission Power and Fast Load Response for Implantable Medical Devices

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 64, (3), March 2017, article number 7453177, p. 279-283
Li, Xing; Li, Yinping; Tsui, Chi Ying; Ki, Wing Hung
Article

Very-High-Frequency and Fast-Transient DC-DC Switching Converters

Selected Topics in Power, RF, and Mixed-Signal ICs / Editors: Yan Lu, China Chi-Seng Lam. River Publishers, 2018, p. 9-60, Ch. 1
Cheng, Lin; Ki, Wing Hung
Book chapter

1.7mm² Inductorless Fully Integrated Flipping-capacitor Rectifier (FCR) For Piezoelectric Energy Harvesting with 483% Power-extraction Enhancement

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, v. 60, March 2017, article number 7870416, p. 372-373
Chen, Zhiyuan; Law, Mankay; Mak, Pui-In; Ki, Wing-Hung; Martins, Rui Paulo
Conference paper

A 13.56 MHz On/Off Delay-Compensated Fully-Integrated Active Rectifier for Biomedical Wireless Power Transfer Systems

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, February 2017, article number 7858287, p. 31-32
Cheng, Lin; Ki, Wing Hung; Yim, Tak Sang
Conference paper

A 13.56 MHz One-Stage High-Efficiency 0X/1X R³ Rectifier for Implatable Medical Devices

2017 IEEE International Symposium on Circuits and Systems (ISCAS), September 2017, article number 8050848
Ge, Xinyuan; Cheng, Lin; Ki, Wing Hung
Conference paper

A 30MHz Hybrid Buck Converter with 36mV Droop and 125ns 1% Settling Time for a 1.25A/2ns Load Transient

IEEE International Solid-State Circuits Conference, v. 60, March 2017, article number 7870324, p. 188-189
Cheng, Lin; Ki, Wing Hung
Conference paper

A Dual-symmetrical-output Switched-capacitor Converter with Dynamic Power Cells and Minimized Cross Regulation for Application Processors in 28nm CMOS

IEEE International Solid-State Circuits Conference, v. 60, March 2017, article number 7870402, p. 344-345
Jiang, Junmin; Lu, Yan; Ki, Wing Hung; U seng-pan; Martins, Rui Paulo
Conference paper

A Wireless Power Receiver with a 3-Level Reconfigurable Resonant Regulating Rectifier for Mobile-Charging Applications

Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, April 2017, article number 7858288, p. 33-34
Cheng, Lin; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Closed-Loop Transfer Functions and Frequency-Point Spectrum Simulation of CCM Buck Converters

2016 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2016, January 2017, article number 7804069, p. 698-701
Ki, Wing Hung; Cheng, Lin; Zhan, Chenchang
Conference paper

CMOS Fully-integrated Coulomb Counter Based on Voltage-to-frequency Conversion Algorithm

EDSSC 2017 - 13th IEEE International Conference on Electron Devices and Solid-State Circuits, v. 2017-January, December 2017, p. 1-2
Modak, Dipyaman; Kwok, Tsz Fai; Ki, Wing Hung
Conference paper

Fully-Integrated AMLED Micro Display System With a Hybrid Voltage Regulator

2017 IEEE Asian Solid-State Circuits Conference, A-SSCC 2017 - Proceedings, v. 2017-January, December 2017, p. 277-280
Jiang, Junmin; Sun, Liusheng; Zhang, Xu; Yuen, Shing Hin; Li, Xianbo; Ki, Wing Hung; Yue, Patrick C.; Lau, Kei May
Conference paper

Methods for Measuring Loop-Gain Function of High-Frequency DC-DC Converters

2016 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2016, January 2017, article number 7803945, p. 247-249
Liu, Xun; Jiang, Junmin; Mok, Philip K T; Ki, Wing Hung
Conference paper

Stability Conditions for Hybrid Supply Modulators

Proceedings - IEEE International Symposium on Circuits and Systems, September 2017, article number 8050513, Category numberCFP17ISC-USB; Code 130930
Tan, Min; Ki, Wing Hung
Conference paper

2016 13

Adaptive On/Off Delay-Compensated Active Rectifiers for Wireless Power Transfer Systems

IEEE Journal of Solid-State Circuits, v. 51, (3), March 2016, article number 7403843, p. 712-723
Cheng, Lin; Ki, Wing Hung; Lu, Yan; Yim, Tak Sang
Article

An Efficiency-Enhanced Hybrid Supply Modulator With Single-Capacitor Current-Integration Control

IEEE Journal of Solid-State Circuits, v. 51, (2), February 2016, article number 7328251, p. 533-542
Tan, Min; Ki, Wing Hung
Article

An Implantable Medical Device for Transcorneal Electrical Stimulation: Packaging Structure, Process Flow, and Toxicology Test

IEEE Transactions on Components, Packaging and Manufacturing Technology, v. 6, (8), Aug 2016, article number 7509610, p. 1174-1180
Le, Fuliang; Lo, Chi Chuen; Qiu, Xing; Lee, Shi-wei; Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Article

An NMOS-LDO Regulated Switched-Capacitor DC-DC Converter With Fast-Response Adaptive-Phase Digital Control

IEEE Transactions on Power Electronics, v. 31, (2), February 2016, article number 7080886, p. 1294-1303
Lu, Yan; Ki, Wing Hung; Yue, Chik
Article

Analysis and Design Considerations of Integrated 3-Level Buck Converters

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 63, (5), May 2016, article number 7469385, p. 671-682
Liu, Xun; Mok, Kwok Tai Philip; Jiang, Junmin; Ki, Wing Hung
Article

Limit Cycle Oscillation Reduction for Digital Low Dropout Regulators

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 63, (9), September 2016, article number 7419894, p. 903-907
Huang, Mo; Lu, Yan; Sin, Saiweng; U, Seng-Pan; Martins, Rui Paulo; Ki, Wing Hung
Article

A 0.035mm² 150mA Fast-Response Low-Dropout Regulator Based on Matching-Enhanced Error Amplifier and Multi-Threshold-Controlled Unity-Gain Buffer in 0.13-µm CMOS

2016 IEEE International Symposium on Circuits and Systems (ISCAS), v. 2016-July, July 2016, article number 7539151, p. 2703-2706
Zhan, Chenchang; Ki, Wing Hung; Zheng, Jiawei; Liu, Yonggen
Conference paper

A 6.78MHz 6W Wireless Power Receiver with a 3-Level 1x / 1/2 x / 0x Reconfigurable Resonant Regulating Rectifier

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, v. 59, February 2016, article number 7418064, p. 376-377
Cheng, Lin; Ki, Wing-Hung; Wong, Tatto; Yim, Taksang; Tsui, Chiying
Conference paper

A Digitally-controlled 2-/3-phase 6-ratio Switched-capacitor DC-DC Converter with Adaptive Ripple Reduction and Efficiency Improvements

ESSCIRC Conference 2016: 42nd European Solid-State Circuits Conference, v. 2016-October, October 2016, article number 7598336, p. 441-444
Jiang, Junmin; Lu, Yan; Ki, Wing Hung
Conference paper

A Generic Model for Constructing Three-Stage Amplifiers

2016 IEEE International Symposium on Circuits and Systems (ISCAS), v. 2016-July, July 2016, article number 7527278, p. 466-469
Tan, Min; Ki, Wing Hung
Conference paper

A Low-Power Chopper Bandpass Amplifier for Biopotential Sensors

Proceedings - IEEE International Symposium on Circuits and Systems, v. 2016-July, July 2016, article number 7527230, p. 301-304
Zheng, Jiawei; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

A WLAN 2.4-GHz RF Energy Harvesting System With Reconfigurable Rectifier For Wireless Sensor Network

Proceedings - IEEE International Symposium on Circuits and Systems, v. 2016-July, July 2016, article number 7539059, p. 2362-2365
Zeng, Zizhen; Li, Xing; Bermak, Amine; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

An Indoor Solar Energy Harvesting System Using Dual Mode SIDO Converter with Fully Digital Time-Based MPPT

Proceedings - IEEE International Symposium on Circuits and Systems, v. 2016-July, July 2016, article number 7539057, p. 2354-2357
Meng, Xiaodong; Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

2015 16

A 13.56 MHz Wireless Power Transfer System With Reconfigurable Resonant Regulating Rectifier and Wireless Power Control for Implantable Medical Devices

IEEE Journal of Solid-State Circuits, v. 50, (4), April 2015, article number 7035125, p. 978-989
Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Article

A 30-Gb/s 1.37-pJ/b CMOS Receiver for Optical Interconnects

Journal of Lightwave Technology, v. 33, (4), February 2015, article number 6985584, p. 778-786
Pan, Quan; Wang, Yipeng; Hou, Zhengxiong; Sun, Li; Lu, Yan; Ki, Wing-Hung; Chiang, Patrick; Yue, Chik Patrick
Article

A Cascode Miller-Compensated Three-Stage Amplifier With Local Impedance Attenuation for Optimized Complex-Pole Control

IEEE Journal of Solid-State Circuits, v. 50, (2), February 2015, p. 440-449
Tan, Min; Ki, Wing-Hung
Article

A Fully-Integrated Low-Dropout Regulator With Full-Spectrum Power Supply Rejection

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 62, (3), March 2015, p. 707-716
Lu, Yan; Wang, Yipeng; Pan, Quan; Ki, Wing Hung; Yue, Patrick C.
Article

On-Chip Compensated Wide Output Range Boost Converter with Fixed-Frequency Adaptive Off-Time Control for LED Driver Applications

IEEE Transactions on Power Electronics, v. 30, (4), April 2015, article number 6945409, p. 2096-2107
Cheng, Lin; Ni, Jinhua; Qian, Yao; Zhou, Minchao; Ki, Wing-Hung; Liu, Bill Yang; Li, Grant; Hong, Zhiliang
Article

Power Management Analysis of Inductively-Powered Implants with 1X/2X Reconfigurable Rectifier

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 62, (3), March 2015, article number 6977994, p. 617-624
Li, Xing; Tsui, Chi-Ying; Ki, Wing-Hung
Article

Reconfigurable Resonant Regulating Rectifier With Primary Equalization for Extended Coupling- and Loading-Range in Bio-Implant Wireless Power Transfer

IEEE Transactions on Biomedical Circuits and Systems, v. 9, (6), December 2015, p. 875-884
Li, Xing; Meng, Xiaodong; Tsui, Chi Ying; Ki, Wing Hung
Article

A 123-Phase DC-DC Converter-Ring with Fast-DVS for Microprocessors

2015 IEEE International Solid-state Circuits Conference: Digest of Technical Papers /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 364-365, Article number 7063077
Lu, Yan; Jiang, Junmin; Ki, Wing-Hung; Yue, Chik Patrick; Sin, Sai-Weng; U, Seng-pan; Martins, Rui Paulo
Conference paper

A 12A 50V Half-bridge Gate Driver for Enhancement-mode GaN HEMTs with Digital Dead-time Correction

2015 IEEE International Symposium on Circuits and Systems (ISCAS 2015) /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 1750-1753, Article number 7168992
Chen, Ziang; Wong, Yat To; Yim, Tak Sang; Ki, Wing Hung
Conference paper

A 2-/3-Phase Fully Integrated Switched-Capacitor DC-DC Converter in Bulk CMOS for Energy-Efficient Digital Circuits with 14% Efficiency Improvement

2015 IEEE International Solid-State Circuits Conference (ISSCC 2015) /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 366-367, Article number 7063078
Jiang, Junmin; Lu, Yan; Huang, Cheng; Ki, Wing-Hung; Mok, Philip Kwok Tai
Conference paper

A Fully Integrated IEEE 802.15.7 Visible Light Communication Transmitter with On-chip 8-W 85% Efficiency Boost LED Driver

2015 Symposium on VLSI Circuits (VLSI Circuits 2015) /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. C216-C217, Article number 7231264
Hussain, Babar; Che, Fengyu; Zhang, Feng; Yim, Tak-Sang; Cheng, Lin; Ki, Wing-Hung; Yue, Patrick Chik; Wu, Liang
Conference paper

Analysis of Two-phase On-chip Step-down Switched Capacitor Power Converters

2014 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS 2014) /IEEE. New York, USA : Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 575-578, Article number 7032847
Jiang, Junmin; Lu, Yan; Ki, Wing-Hung
Conference paper

Efficient wireless power transmission technology based on above-CMOS integrated (ACI) high quality inductors

2014 IEEE International Electron Devices Meeting (IEDM), February 2015, article number 7047038, p. 12.4.1-12.4.4
Raju, Salahuddin; Li, Xing; Lu, Yan; Tsui, Chi Ying; Ki, Wing Hung; Chan, Mansun; Yue, Chik Patrick
Conference paper

Fluxless Packaging of an Implantable Medical Device for Transcorneal Electrical Stimulation

Proceedings of the Electronic Packaging Technology Conference, EPTC, v. 2016-February, February 2016, article number 7412282
Le, Fuliang; Lo, Chi Chuen; Qiu, Xing; Lee, Shi-wei; Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

UHF energy harvesting system using reconfigurable rectifier for wireless sensor network

2015 IEEE International Symposium on Circuits and Systems (ISCAS), July 2015, article number 7168578, p. 93-96
Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

Wireless Power Transfer System Using Primary Equalizer for Coupling- and Load-Range Extension in Bio-Implant Applications

2015 IEEE International Solid-State Circuits Conference - (ISSCC) Digest of Technical Papers, Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 228-229
Li, Xing; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

2014 18

A 10/30 MHz Fast Reference-Tracking Buck Converter with DDA-Based Type-III Compensator

IEEE Journal of Solid-State Circuits, v. 49, (12), December 2014, article number 6888536, p. 2788-2799
Cheng, Lin; Liu, Yonggen; Ki, Wing Hung
Article

A 13.56 MHz CMOS Active Rectifier With Switched-Offset and Compensated Biasing for Biomedical Wireless Power Transfer Systems

IEEE Transactions on Biomedical Circuits and Systems, v. 8, (3), 2014, article number 6552222, p. 334-344
Lu, Yan; Ki, Wing-Hung
Article

A Novel Single-Inductor Dual-Input Dual-Output DC-DC Converter With PWM Control for Solar Energy Harvesting System

IEEE Transactions on Very Large Scale Integration (VLSI) Systems, v. 22, (8), 2014, article number 6595148, p. 1693-1704
Shao, Hui; Li, Xing; Tsui, Chi-Ying; Ki, Wing Hung
Article

Analysis and Design of Output-Capacitor-Free Low-Dropout Regulators With Low Quiescent Current and High Power Supply Rejection

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 61, (2), February 2014, article number 6717040, p. 625-636
Zhan, Chenchang; Ki, Wing-Hung
Article

17.11 A 0.65ns-response-time 3.01ps FOM Fully-integrated Low-dropout Regulator with Full-spectrum Power-supply-rejection for Wideband Communication Systems

2014 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2014, article number 6757446, p. 306-307
Lu, Yan; Ki, Wing-Hung; Yue, Chik Patrick
Conference paper

4.4 A 10/30MHz Wide Duty Cycle Range Buck Converter with DDA-based Type-III Compensator and Fast Reference-tracking Responses for DVS Applications

2014 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2014, article number 6757348, p. 84-86
Cheng, Lin; Liu, Yonggen; Ki, Wing Hung
Conference paper

A 13.56MHz Wireless Power Transfer System with Reconfigurable Resonant Regulating Rectifier and Wireless Power Control for Implantable Medical Devices

28th IEEE Symposium on VLSI Circuits Digest of Technical Papers, Institute of Electrical and Electronics Engineers (IEEE), 2014
Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

A 3-mW 25-Gb/s CMOS Transimpedance Amplifier with Fully Integrated Low-dropout Regulator for 100GbE Systems

Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium, 2014, article number 6851718, p. 275-278
Wang, Yipeng; Lu, Yan; Pan, Quan; Hou, Zhengxiong; Wu, Liang; Ki, Winghung; Yue, Chik Patrick
Conference paper

A 41-mW 30-Gb/s CMOS optical receiver with digitally-tunable cascaded equalization

European Solid-State Circuits Conference, v. 2014, 2014, article number 6942038, p. 127-130
Pan, Quan; Wang, Yipeng; Hou, Zhengxiong; Sun, Li; Wu, Liang; Ki, Wing Hung; Chiang, Patrick; Yue, Chik Patrick
Conference paper

A 48-mW 18-Gb/s Fully Integrated CMOS Optical Receiver with Photodetector and Adaptive Equalizer

2014 Symposium on VLSI Circuits (VLSI-Circuits 2014), Institute of Electrical and Electronics Engineers (IEEE), 2014
Pan, Quan; Hou, Zhengxiong; Wang, Yipeng; Lu, Yan; Ki, Wing Hung; Wang, Keh Chung; Yue, Chik Patrick
Conference paper

A 4μA quiescent current output-capacitor-free low-dropout regulator with fully differential input stage

Proceedings of IEEE International Symposium on Circuits and Systems, v. 2014, 2014, article number 6865670, p. 2457-2460
Tan, Min; Zhan, Chenchang; Ki, Wing Hung
Conference paper

A circuit-oriented geometrical approach in predicting subharmonic oscillation of dc-dc converters with voltage-mode control

Proceedings of IEEE International Symposium on Circuits and Systems, 2014, article number 6865297, p. 962-965
Cheng, Lin; Ki, Wing Hung
Conference paper

A fast transient output-capacitor-free low-dropout regulator with class-AB control stage

2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014, 2014, article number 7061244
Tan, Min; Ki, Wing-Hung
Conference paper

A low-dropout regulator with power supply rejection improvement by bandwidth-zero tracking

IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, 2014, article number 7032730, p. 105-108
Lu, Yan; Yao, Ruo He; Huang, Da Qiang; Su, Julien; Jiang, Junmin; Ki, Wing-Hung
Conference paper

An Adaptive Wireless Powering and Data Telemetry System for Optic Nerve Stimulation

2014 IEEE International Symposium on Circuits and Systems (ISCAS 2014), Institute of Electrical and Electronics Engineers (IEEE), 2014, p. 1404-1407
Li, Xing; Lu, Yan; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

Fast-transient-response high-PSR low-dropout regulator based on ultra-fast error amplifier and unity-gain buffer for portable applications

Proceedings of IEEE International Symposium on Circuits and Systems, 2014, article number 6865283, p. 906-909
Liu, Yonggen; Zhan, Chenchang; Ki, Wing Hung
Conference paper

Load-transient enhanced low-dropout regulator based on buffer stage with paralleled current and voltage paths for low-ESR applications

2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014, 2014, article number 7061245
Liu, Yonggen; Zhan, Chenchang; Zheng, Jiawei; Ki, Wing-Hung
Conference paper

Through Silicon Underfill Dispensing for 3D Die/Interposer Stacking

Proceedings - Electronic Components and Technology Conference, September 2014, article number 6897397, p. 919-924
Le, Fuliang; Lee, Ricky Shi-wei; Lau, Kei May; Yue, Chik Patrick; Sin, Johnny Kin On; Mok, Philip Kwok Tai; Ki, Wing Hung; Choi, Hoi Wai
Conference paper

2013 9

A +/- 0.5% Precision On-Chip Frequency Reference With Programmable Switch Array for Crystal-Less Applications

IEEE Transactions on Circuits and Systems II: Express Briefs, v. 60, (10), 2013, article number 6584791, p. 642-646
Lu, Yan; Yuan, Gang; Der, Lawrence; Ki, Wing-Hung; Yue, Chik Patrick
Article

Energy Harvesting and Power Delivery for Implantable Medical Devices

Foundations and trends in electronic design automation, v. 7, (3), August 2013, p. 179-246
Li, Xing; Tsui, Chi-Ying; Ki, Wing Hung
Article

Energy Harvesting and Power Delivery for Implantable Medical Devices

Foundations and Trends® in Electronic Design Automation (Book 22) / [Authors]: Chi-Ying Tsui, Xing Li, Wing-Hung Ki. Boston - Delft : Now Publishers Inc, 2013, p. 1-82
Tsui, Chi Ying; Li, Xing; Ki, Wing Hung
Book chapter

A 13.56MHz fully integrated 1X/2X active rectifier with compensated bias current for inductively powered devices

Lu, Yan; Li, Xing; Ki, Wing-Hung; Tsui, Chiying; Yue, Patrick Chik
Conference paper

Cost-effective and Eco-friendly LED System-on-a-Chip (SoC)

2013 10th China International Forum on Solid State Lighting, ChinaSSL 2013, 2013, article number 7177356, p. 235-238
Lau, Kei May; Choi, Hoiwai; Ki, Wing-Hung; Lee, Ricky Shi Wei; Mok, Philip Kwok Tai; Sin, Johnny Kin On; Yue, Chik Patrick
Conference paper

Current-Mirror Miller Compensation: An Improved Frequency Compensation Technique for Two-Stage Amplifiers

International Symposium on VLSI Design Automation and Test, v. 2013, 2013, article number 6533876
Tan, Min; Ki, Wing-Hung
Conference paper

High-Side NMOS Power Switch and Bootstrap Driver for High-Frequency Fully-Integrated Converters with Enhanced Efficiency

2013 IEEE International Symposium on Circuits and Systems (ISCAS 2013), Institute of Electrical and Electronics Engineers (IEEE), 2013, p. 693-696
Huang, Cheng; Cheng, Lin; Mok, Philip Kwok Tai; Ki, Wing Hung
Conference paper

Session 21 overview: Power converters

2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers, San Francisco, CA, USA, 17-21 Feb 2013, p. 360-361
Ki, Wing Hung; Berkhout, Marco
Conference paper

Split-output Miller-compensated Two-stage Amplifiers

2013 IEEE International Conference of Electron Devices and Solid-State Circuits (EDSSC 2013), Institute of Electrical and Electronics Engineers (IEEE), 2013
Tan, Min; Ki, Wing Hung
Conference paper

2012 13

An Output-Capacitor-Free Adaptively Biased Low-Dropout Regulator With Subthreshold Undershoot-Reduction for SoC

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 59, May 2012, p. 1119-1131
Zhan, Chenchang; Ki, Wing-Hung
Article

Introduction to the Special Issue on the 2012 IEEE International Solid-State Circuits Conference

IEEE Journal of Solid-State Circuits, v. 47, December 2012, p. 2859-2864
Corsi, Marco; Andreani, Pietro; Ki, Wing-Hung; Chien, George; Kenney, Jack
Article

Output Capacitor Free Low Dropout Regulators: Analysis and Design

Zhan, Chenchang; Ki, Wing-Hung
Book

A 10/30MHz PWM Buck Converter with an Accuracy-Improved Ramp Generator

2012 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS (APCCAS), Kaohsiung, Taiwan, 2012, p. 420-423
Liu, Yonggen; Zhan, Chenchang; Cheng, Lin; Ki, Wing-Hung
Conference paper

A Chip-Area-Efficient CMOS Low-Dropout Regulator Using Wide-Swing Voltage Buffer with Parabolic Adaptive Biasing for Portable Applications

2012 IEEE Asian Solid State Circuits Conference (A-SSCC), 2012, article number 6522668, p. 233-236
Liu, Yonggen; Zhan, Chenchang; Cheng, Lin; Ki, Wing Hung
Conference paper

A Comparative Study of Hysteretic Voltage-Mode Buck Converters for High Switching Frequency and High Accuracy

2012 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS (APCCAS), 2012, p. 57-60
Lai, King-Man; Zhan, Chenchang; Ki, Wing-Hung
Conference paper

A fast-transient-response hybrid buck converter with automatic and nearly-seamless loop transition for portable applications

Proceedings of IEEE European Solid-State Circuits Conference, Bordeaux, France, 2012, p. 165-168
Liu, Yonggen; Zhan, Chenchang; Ki, Wing Hung
Conference paper

A new charge pump analysis and efficiency optimization method for on-chip charge pump

Li, Xing; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

Analysis and design strategy of on-chip charge pumps for micro-power energy harvesting applications

Ki, Wing-Hung; Lu, Yan; Su, Feng; Tsui, Chi Ying
Conference paper

Continuous-Time Common-Mode Feedback Detection Circuits with Enhanced Detection Accuracy

2012 IEEE INTERNATIONAL CONFERENCE ON ELECTRON DEVICES AND SOLID STATE CIRCUIT (EDSSC), Bangkok, Thailand, 2012
Liu, Yonggen; Zhan, Chenchang; Yim, Tak Sang; Ki, Wing-Hung
Conference paper

Input-Adaptive Dual-Output Power Management Unit for Energy Harvesting Devices

Midwest Symposium on Circuits and Systems, 2012, p. 1080-1083
Lu, Yan; Ki, Wing-Hung; Yue, C. Patrick
Conference paper

Session 5 overview: Audio and power converters: Analog subcommittee

2012 IEEE International Solid-State Circuits Conference, San Francisco, CA, 19-23 Feb 2012, p. 90-91
Ki, Wing Hung; Hurwitz, Jed
Conference paper

Solar energy harvesting system design using re-configurable charge pump

Li, Xing; Tsui, Chi-Ying; Ki, Wing Hung
Conference paper

2011 9

A low dropout regulator with low quiescent current and high power supply rejection over wide range of frequency for SOC

Journal of circuits, systems, and computers, 20, (1), February 2011, p. 1-13
Zhan, Chenchang; Ki, Wing-Hung
Article

Charge Balance Analysis and State Transition Analysis of Hysteretic Voltage Mode Switching Converters

IEEE transactions on circuits and systems. I, Regular papers, v. 58, (5), May 2011, p. 1142-1153
Ki, Wing-Hung; Lai, King-Man; Zhan, Chenchang
Article

Vibration Energy Scavenging System With Maximum Power Tracking for Micropower Applications

IEEE transactions on very large scale integration (VLSI) systems, v. 19, (11), November 2011, p. 2109-2119
Lu, Chao; Tsui, Chi-Ying; Ki, Wing-Hung
Article

A 13.56MHz CMOS rectifier with switched-offset for reversion current control

IEEE Symposium on VLSI Circuits, Digest of Technical Papers, 2011, p. 246-247
Lu, Yan; Ki, Wing-Hung; Yi, Jun
Conference paper

An adaptive multi-stage rectifier for RF energy harvesting applications

Li, Xing; Tsui, Chi-Ying; Ki, Wing Hung
Conference paper

An Adaptively Biased Low-Dropout Regulator with Transient Enhancement

2011 16TH ASIA AND SOUTH PACIFIC DESIGN AUTOMATION CONFERENCE (ASP-DAC), 2011
Zhan, Chenchang; Ki, Wing-Hung
Conference paper

An Output-Capacitor-Free Adaptively Biased Low-Dropout Regulator With Sub-Threshold Undershoot-Reduction for SoC

IEEE International Symposium on Circuits & Systems (ISCAS), 2011, p. 45-48
Zhan, Chenchang; Ki, Wing-Hung
Conference paper

Design and analysis of on-chip charge pumps for micro-power energy harvesting applications

Ki, Wing Hung; Lu, Yan; Su, Feng; Tsui, Chi Ying
Conference paper

ES6: Technologies for smart grid and smart meter

2011 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC), San Francisco, CA, 20-24 Feb 2011, p. 533
Jeremy, Hurwitz; Ki, Wing Hung
Conference paper

2010 12

A system-on-chip EPC Gen-2 passive UHF RFID tag with embedded temperature sensor

IEEE Journal of Solid-State Circuits, v. 45, (11), 2010, p. 2404-2420
Yin, Jun; Yi, Jun; Law, Man Kay; Ling, Yunxiao; Lee, Man Chiu; Ng, Kwok Ping; Gao, Bo; Luong, Howard; Bermak, Amine; Chan, Man Sun; Ki, Wing-Hung; Tsui, Chiying; Yuen,Matthew Ming Fai
Article

CMOS Bandgap References With Self-Biased Symmetrically Matched Current-Voltage Mirror and Extension of Sub-1-V Design

IEEE TRANSACTIONS on very LARGE SCALE INTEGRATION (vlsi) SYSTEMS, v. 18, (6), 2010, p. 857-865
Lam, Yat-Hei; Ki, Wing-Hung
Article

Engineering Outreach: A Successful Initiative With Gifted Students in Science and Technology in Hong Kong

IEEE transactions on education, v. 53, (1), 2010, FEB, p. 158-171
Chan, Yuen-Yan; Hui, Diane; Dickinson, Anthony R.; Chu, Dennis; Cheng, David Ki-Wai; Cheung, Edward; Ki, Wing-Hung; Lau, Wing-Hong; Wong, Jasper; Lo, Edward W.C.; Luk, Kwai-Man
Article

Output-Capacitor-Free Adaptively Biased Low-Dropout Regulator for System-on-Chips

IEEE TRANSACTIONS on Circuits and SYSTEMS i-regular Papers, v. 57, (5, Sp. Iss. SI), 2010, MAY, p. 1017-1028
Zhan, Chenchang; Ki, Wing-Hung
Article

A 25MHz sign and magnitude converter for analog current mode iterative decoders

Proceedings of the 2010 IEEE Asia Pacific Conference on Circuit and System (APCCAS), 2010, p. 220-223
Lo, Ming Yam; Ki, Wing Hung; Mow, Wai Ho
Conference paper

A single inductor DIDO DC-DC converter for solar energy harvesting applications using band-band control

Shao, Hui; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

A system-on-chip EPC Gen-2 passive UHF RFID tag with embedded temperature sensor

Yin, Jun; Yi, Jun; Law, Man Kay; Ling, Yunxiao; Lee, Man Chiu; Ng, Kwok Ping; Gao, Bo; Luong, Howard C.; Bermak, Amine; Chan, Man Sun; Ki, Wing-Hung; Tsui, Chi-Ying; Yuen, Matthew Ming-Fai
Conference paper

An output-capacitor-free cascode low-dropout regulator with low quiescent current and high power supply rejection

IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, 2010, p. 472-475
Zhan, Chenchang; Ki, Wing-Hung
Conference paper

Freewheel duration adjustment circuits for charge-control single-inductor dual-output switching converters

ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, 2010, p. 2722-2725
Kwan, Kwok-To; Ki, Wing-Hung
Conference paper

Maximizing the Harvested Energy for Micro-power Applications through Efficient MPPT and PMU Design

Shao, Hui; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

Output-Capacitor-Free Adaptively Biased Low-Dropout Regulators

2010 IEEE International Conference of Electron Devices and Solid-State Circuits, EDSSC 2010, 2010
Zhan, Chenchang; Ki, Wing-Hung
Conference paper

System Level Power Optimizations for EPC RFID Tags to Improve Sensitivity Using Load Power Shaping and Operation Scheduling

Ling, Yunxiao; Yi, Jun; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

2009 11

Regulated Switched-Capacitor Doubler With Interleaving Control for Continuous Output Regulation

IEEE journal of solid-state circuits, v. 44, (4), April 2009, p. 1112-1120
Su, Feng; Ki, Wing Hung; Tsui, Chi Ying
Article

The Design of a Micro Power Management System for Applications Using Photovoltaic Cells With the Maximum Output Power Control

IEEE Transactions on Very Large Scale Integration (VLSI) Systems, v. 17, (8), August 2009, p. 1138-1142
Shao, Hui; Tsui, Chi Ying; Ki, Wing Hung
Article

A 20MHz switched-current sample-and-hold circuit for current mode analog iterative decoders

Proceedings of the 2009 12th International Symposium on Integrated Circuits, 2009, p. 283-286
Lo, Ming Yam; Ki, Wing-Hung; Mow, Wai Ho
Conference paper

A high-precision low-voltage low dropout regulator for SoC with adaptive biasing

2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009, Taipei, Taiwan, 24-27 May 2009, p. 2521-2524
Zhan, Chenchang; Ki, Wing Hung
Conference paper

A Low Dropout Regulator for SoC with High Power Supply Rejection and Low Quiescent Current

PROCEEDINGS OF THE 2009 12TH INTERNATIONAL SYMPOSIUM ON INTEGRATED CIRCUITS (ISIC 2009), 2009, p. 260-263
Zhan, Chenchang; Ki, Wing-Hung
Conference paper

A single inductor dual input dual output DC-DC converter with hybrid supplies for solar energy harvesting applications

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

An inductor-less MPPT design for light energy harvesting systems

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

Digitally assisted quasi-V² hysteretic buck converter with fixed frequency and without using large-ESR capacitor

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, 2009
Su, Feng; Ki, Wing-Hung
Conference paper

Dual-Power-path RF-DC Multi-Output Power Management Unit for RFID Tags

Yi, Jun; Ki, Wing-Hung; Mok, Philip; Tsui, Chi-Ying
Conference paper

Loop Bandwidth Extension Technique for PWM Voltage Mode DC-DC Switching Converters

2009 IEEE ASIAN SOLID-STATE CIRCUITS CONFERENCE (A-SSCC), 2009, p. 325-328
Zhan, Chenchang; Ki, Wing-Hung
Conference paper

Near-threshold startup integrated boost converter with slew rate enhanced error amplifier

Proceedings - IEEE International Symposium on Circuits and Systems, 2009, p. 2409-2412
Wong, Yat-To; Ng, Chik-Wai; Wan, Ho-Ming; Kwong, Kwok-Kuen; Lam, Yat-Hei; Ki, Wing-Hung
Conference paper

2008 9

Component-efficient multiphase switched-capacitor dC-dC converter with configurable conversion ratios for LCD driver applications

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 55, (8), 2008, AUG, p. 753-757
Su, Feng; Ki, Wing-Hung
Article

Ultra fast fixed-frequency hysteretic buck converter with maximum charging current control and adaptive delay compensation for DVS applications

IEEE journal of solid-state circuits, v. 43, (4), April 2008, p. 815-822
Su, Feng; Ki, Wing-Hung; Tsui, Chi-Ying
Article

A 0.9V 0.35μm adaptively biased CMOS LDO regulator with fast transient response

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, v. 51, 2008
Lam, Yat-Hei; Ki, Wing-Hung
Conference paper

An energy-adaptive MPPT power management unit for micro-power vibration energy harvesting

Yi, Jun; Su, Feng; Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

An integrated reconfigurable SC power converter with hybrid gate control scheme for mobile display driver applications

Proceedings of 2008 IEEE Asian Solid-State Circuits Conference, A-SSCC 2008, 2008, p. 169-172
Su, Feng; Ki, Wing-Hung
Conference paper

An SC voltage regulator with novel area-efficient continuous output regulation by dual-branch interleaving control scheme

Su, Feng; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

Integrated single-inductor dual-input dual-output boost converter for energy harvesting applications

Sze, Ngok-Man; Su, Feng; Lam, Yat-Hei; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Threshold voltage start-up boost converter for sub-mA applications

Sze, Ngok Man; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

2007 9

Analysis and Design Strategy of UHF Micro-Power CMOS Rectifiers for Micro-Sensor and RFID Applications

IEEE Transactions on Circuits and Systems I: Regular Papers, v. 54, (1), January 2007, p. 153-166
Yi, Jun; Ki, Wing-Hung; Tsui, Chi-Ying
Article

Design strategy for step-up charge pumps with variable integer conversion ratios

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 54, (5), 2007, MAY, p. 417-421
Su, Feng; Ki, Wing-Hung
Article

Fast-transient PCCM switching converter with freewheel switching control

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 54, (9), 2007, SEP, p. 825-829
Ma, Dongsheng; Ki, Wing-Hung
Article

A batteryless vibration-based energy harvesting system for ultra low power ubiquitous applications

Chao, Lu; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

A Micro Power Management System and Maximum Output Power Control for Solar Energy Harvesting Applications

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

A stable compensation scheme for low dropout regulator in the absence of ESR

ESSCIRC 2007 - Proceedings of the 33rd European Solid-State Circuits Conference, 2007, p. 416-419
Kwok, Tsz-Fai; Ki, Wing-Hung
Conference paper

An inductor-less micro solar power management system design for energy harvesting applications

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

An ultra fast fixed frequency buck converter with maximum charging current control and adaptive delay compensation for DVS applications

Su, Feng; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

Vibration Energy Scavenging and Management for Ultra Low Power Applications

Chao, Lu; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

2006 8

A voltage-mode PWM buck regulator with end-point prediction

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 53, (4), 2006, APR, p. 294-298
Siu, Man; Mok, Philip Kwok Tai; Leung, Ka Nang; Lam, Yat Hei; Ki, Wing Hung
Article

Integrated low-loss CMOS active rectifier for wirelessly powered devices

IEEE TRANSACTIONS on Circuits and SYSTEMS ii-express Briefs, v. 53, (12), December 2006, p. 1378-1382
Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying
Article

A novel charge based computation system and control strategy for energy harvesting applications

Shao, Hui; Tsui, Chi-Ying; Ki, Wing-Hung
Conference paper

Adaptively-biased capacitor-less CMOS low dropout regulator with direct current feedback

Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

An integrated 1.8V to 3.3V regulated voltage doubler using active diodes and dual-loop voltage follower for switch-capacitive load

Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

High efficiency cross-coupled doubler with no reversion loss

Su, Feng; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

Integrated direct output current control switching converter using symmetrically-matched self-biased current sensors

Lam, Yat-Hei; Koon, Suet-Chui; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

Ultra-low voltage power management circuit and computation methodology for energy harvesting applications

Tsui, Chi-Ying; Shao, Hui; Ki, Wing-Hung; Su, Feng
Conference paper

2005 6

A Programmable Integrated Digital Controller for Switching Converters with Dual-band Switching and Complex Pole-zero Compensation

IEEE Journal of Solid-state Circuits, v. 40, (3), March 2005, p. 772-780
Chui, MYK; Ki, Wing Hung; Tsui, Chi Ying
Article

Charge redistribution loss consideration in optimal charge pump design

Ki, Wing Hung; Su, Feng; Tsui, Chi Ying
Conference paper

Gate control strategies for high efficiency charge pumps

Su, Feng; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Hypergraph: An alternative graphical model for computing transfer functions in circuits and systems

2005 International Conference on Communications, Circuits and Systems, v .1-2, 2005, p. 1353-1357
Au, Edward Kwok Sum; Mow, Wai Ho; Ki, Wing Hung
Conference paper

Integrated charge-control single-inductor dual-output step-up/step-down converter

Proceedings - IEEE International Symposium on Circuits and Systems, 2005, p. 3071-3074
Koon, Suet-Chui; Lam, Yat-Hei; Ki, Wing-Hung
Conference paper

Ultra-low voltage power management and computation methodology for energy harvesting applications

Tsui, Chi Ying; Shao, Hui; Ki, Wing Hung; Su, Feng
Conference paper

2004 11

A novel current-mode sensing scheme for magnetic tunnel junction MRAM

IEEE transactions on magnetics, v. 40, 2, Part 1, March 2004, p. 483-488
Au, Edward Kwok Sum; Ki, Wing Hung; Mow, Wai Ho; Hung, ST; Wong, CY
Article

A switched-current sensing architecture for a four-state per cell magnetic tunnel junction MRAM

IEEE TRANSACTIONS on Circuits and SYSTEMS i-regular Papers, v. 51, (11), November 2004, p. 2113-2122
Au, Edward Kwok Sum; Ki, Wing Hung; Mow, Wai Ho; Hung, ST; Wong, CY
Article

An Integrated One-cycle Control Buck Converter with Adaptive Output and Dual Loops for Output Error Correction

IEEE journal of solid-state circuits, v. 39, (1), January 2004, p. 140-149
Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying
Article

A binary-search switched-current sensing scheme for 4-state MRAM

Au, Edward Kwok Sum; Ki, Wing-Hung; Mow, Wai Ho; Hung, S.T.; Wong, C.Y.
Conference paper

A CAD simulator based on loop gain measurement for switching converters

Proceedings - IEEE International Symposium on Circuits and Systems, v. 5, 2004, p.940-943
Ma, Dongsheng; Tam, V.H.S.; Ki, Wing-Hung; Lam, Hylas Y.H.
Conference paper

A dual-band switching digital controller for a buck converter

Chui, M.Y.K.; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

Fast adaptive DC-DC conversion using dual-loop one-cycle control in standard digital CMOS process

Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Integrated 0.9V charge-control switching converter with self-biased current sensor

Lam, Yat-Hei; Ki, Wing-Hung; Tsui, Chi-Ying; Ma, Dongsheng
Conference paper

Loop gain analysis and development of high-speed high-accuracy current sensors for switching converters

2004 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 5, PROCEEDINGS, 2004, p. 828-831
Lam, Hylas Yat Hei; Ki, Wing Hung; Ma, Dongsheng
Conference paper

Minimizing energy consumption of hard real-time systems with simultaneous tasks scheduling and voltage assignment using statistical data

Leung, Lay F.; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

Minimizing Energy Consumption of Multiple-Processors-Core Systems with Simultaneous Tasks Allocation, Scheduling and Voltage Assignment

Leung, Lap F.; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

2003 10

A 1-v 3.5-mw CMOS switched-opamp quadrature IF circuitry for Bluetooth receivers

IEEE journal of solid-state circuits, v. 38, (5), 2003, MAY, p. 805-816
Cheung, Vincent S.L.; Luong, Howard Cam; Chan, Man Sun; Ki, Wing Hung
Article

A pseudo-CCM/DCM SIMO switching converter with freewheel switching

IEEE journal of solid-state circuits, v. 38, (6), 2003, JUN, p. 1007-1014
Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying
Article

An enhanced compact waffle MOSFET with low drain capacitance from a standard submicron CMOS technology

Solid-state electronics, v. 47, (5), 2003, MAY, p. 785-789
Lam, Sang; Mok, Philip Kwok Tai; Ki, Wing Hung; Ko, Ping Keung; Chan, Man Sun
Article

Area-efficient CMOS charge pumps for LCD drivers

IEEE journal of solid-state circuits, v. 38, (10), 2003, OCT, p. 1721-1725
Ying, Tian Rui; Ki, Wing Hung; Chan, Man Sun
Article

Single-inductor multiple-output switching converters with time-multiplexing control in discontinuous conduction mode

IEEE journal of solid-state circuits, v. 38, (1), January 2003, p. 89-100
Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying; Mok, Philip Kwok Tai
Article

An integrated digital controller for DC-DC switching converter with dual-band switching

2003 SYMPOSIUM ON VLSI CIRCUITS, DIGEST OF TECHNICAL PAPERS, 2003, p. 45-48
Chui, Yeung Kei; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Analog Integrated Circuit Design of a Hypertrellis Decoder

Parallel and Distributed Computing, Applications and Technologies, PDCAT Proceedings, 2003, p. 552-556
Hu, Zong-Qq; Mow, Wai Ho; Ki, Wing-Hung
Conference paper

High-sensitivity switched-current sensing circuit for magnetic tunnel junction MRAM

Au, Edward Kwok Sum; Ki, Wing Hung; Mow, Wai Ho; Hung, ST; Wong, CY
Conference paper

Simultaneous task allocation, scheduling and voltage assignment for multiple-processors-core systems using mixed integer nonlinear programming

Leung, Lap Fai; Tsui, Chi Ying; Ki, Wing Hung
Conference paper

Single-inductor dual-input dual-output switching converter for integrated battery charging and power regulation

Lam, Yat Hei; Ki, Wing Hung; Tsui, Chi Ying; Mok, Philip Kwok Tai
Conference paper

2002 13

A 1.0-V V-DD CMOS active-pixel sensor with complementary pixel architecture and pulsewidth modulation fabricated with a 0.25-mu m CMOS process

IEEE journal of solid-state circuits, v. 37, (12), 2002, DEC, p. 1853-1859
Xu, Chao; Zhang, Wei Quan; Ki, Wing Hung; Chan, Man Sun
Article

A 1-V 10.7-MHz switched-opamp, bandpass Sigma Delta modulator using double-sampling finite-gain-compensation technique

IEEE journal of solid-state circuits, v. 37, (10), 2002, OCT, p. 1215-1225
Cheung, Vincent S.L.; Luong, Howard Cam; Ki, Wing Hung
Article

A low-voltage CMOS complementary active pixel sensor (CAPS) fabricated using a 0.25 mu m CMOS technology

IEEE electron device letters, v. 23, (7), 2002, JUL, p. 398-400
Xu, Chao; Ki, Wing Hung; Chan, Man Sun
Article

A 1-V 3.5-mW CMOS switched-opamp quadrature IF circuitry for bluetooth receivers

IEEE Symposium on VLSI Circuits, Digest of Technical Papers, (CIRCUITS SYMP.), 2002, p. 140-143
Cheung, Vincent S.L.; Luong, Howard Cam; Ki, Wing-Hung
Conference paper

A Fast Response Adaptive DC-DC Switching Converter using On-chip Dual-Loop One-cycle control

Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

A highly integrated CMOS image sensor architecture for low voltage applications with deep submicron process

Proceedings - IEEE International Symposium on Circuits and Systems, v. 3, 2002, p. 699-702
Xu, Chao; Zhang, Weiquan; Ki, Wing Hung; Chan, Man Sun
Conference paper

A pseudo-CCM / DCM SIMO switching converter with freewheel switching

Ma, Dongsheng; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

A pseudo-CCM/DCM SIMO switching converter with freewheel switching

Ma, Dongsheng; Ki, Wing-Hung; Tsui, Chi-Ying
Conference paper

An Enhanced Compact Waffle MOSFET for RF Integrated Circuits

60th Annual Device Research Conference Digest, Santa Barbara, CA, USA, 24-26 June 2002, p. 73-74
Lam, Sang; Ki, Wing Hung; Ko, Ping Keung; Chan, Man Sun
Conference paper

Area efficient CMOS integrated charge pumps

Proceedings - IEEE International Symposium on Circuits and Systems, v. 3, 2002, p. 831-834
Ying, Tian Rui; Ki, Wing-Hung; Chan, Man Sun
Conference paper

Bi-directional integrated charge pumps

Chan, Chit Sang; Ki, Wing Hung; Tsui, Chi Ying
Conference paper

Evaluation of the partially-depleted silicon-on-sapphire technology for microwave amplifiers and other prospective applications

2002 3RD INTERNATIONAL CONFERENCE ON MICROWAVE AND MILLIMETER WAVE TECHNOLOGY PROCEEDINGS, 17-19 Aug 2002, p. 171-174
Lam, Sang; Ki, Wing Hung; Shen, Chao; Ko, Ping Keung; Chan, Man Sun
Conference paper

High-isolation bonding pad with depletion-insulation structure for RF/microwave integrated circuits on bulk silicon CMOS

IEEE MTT-S International Microwave Symposium Digest, v. 2, 2002, p. 677-680
Lam, Sang; Ki, Wing Hung; Chan, Man Sun
Conference paper

2001 11

A 1-V CMOS switched-opamp switched-capacitor pseudo-2-path filter

IEEE journal of solid-state circuits, v. 36, (1), 2001, JAN, p. 14-22
Cheung, Vincent Sin Luen; Luong, Howard Cam; Ki, Wing Hung
Article

A 1.8V single-inductor dual-output switching converter for power reduction techniques

Ma, Dongsheng; Ki, Wing-Hung; Tsui, Chi-Ying; Mok, Philip Kwok Tai
Conference paper

A 1V 10.7MHz switched-opamp bandpass ∑Δ modulator using double- sampling finite-gain-compensation technique

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, 2001, p. 52-53+428
Cheung, Vincent Sin Luen; Luong, Howard Cam; Ki, Wing Hung
Conference paper

A single-inductor dual-output integrated DC/DC boost converter for variable voltage scheduling

Ma, Dongsheng; Ki, Wing Hung; Tsui, Chi Ying; Mok, Philip Kwok Tai
Conference paper

Characteristics of RF power amplifiers by 0.5μm SOS CMOS process

IEEE International SOI Conference, 2001, p. 141-142
Lam, Sang; Ki, Wing-Hung; Chan, Man Sun
Conference paper

Dual-loop feedback for fast low dropout regulators

PESC Record - IEEE Annual Power Electronics Specialists Conference, v. 3, 2001, p. 1265-1269
Chen, Wei; Ki, Wing-Hung; Mok, Philip Kwok Tai
Conference paper

Phase-controlled dimmable CFL with PPFC and switching frequency modulation

PESC Record - IEEE Annual Power Electronics Specialists Conference, v. 2, 2001, p. 951-956
Yau, Elson K.F.; Ki, Wing-Hung; Mok, Philip Kwok Tai; Sin, Johnny Kin On
Conference paper

Realization of compact MOSFET structure by waffle-layout

European Solid-State Device Research Conf., Nuremberg, Germany, 119-122
Lam, Sang; Ki, Wing-Hung; Kwok, Ka-Chun; Chan, Mansun
Conference paper

Single-inductor multiple-output switching converters with bipolar outputs

Ma, Dongsheng; Ki, Wing-Hung; Mok, Philip Kwok Tai; Tsui, Chi-Ying
Conference paper

Switched-capacitor power converters with integrated low dropout regulators

Proceedings - IEEE International Symposium on Circuits and Systems, v. 3, 2001, p. 293-296
Chen, Wei; Ki, Wing-Hung; Mok, Philip Kwok Tai; Chan, Man Sun
Conference paper

The silicon-on-sapphire technology for RF integrated circuits: Potential and limitations

IEEE Region 10 International Conference on Electrical and Electronic Technology, 2001, p. 483-486
Lam, Sang; Ki, Wing Hung; Chan, Man Sun
Conference paper

2000 7

Signal flow graph analysis of feedback amplifiers

IEEE TRANSACTIONS on Circuits and SYSTEMS i-fundamental THEORY and APPLICATIONS, v. 47, (6), 2000, JUN, p. 926-933
Ki, Wing Hung
Article

Three-stage large capacitive load amplifier with damping-factor-control frequency compensation

IEEE journal of solid-state circuits, v. 35, (2), 2000, FEB, p. 221-230
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung; Sin, Johnny Kin On
Article

A 1V CMOS switched-opamp switched-capacitor pseudo-2-path filter

Digest of Technical Papers - IEEE International Solid-State Circuits Conference, 2000, p. 154-155
Cheung, Vincent Sin Luen; Luong, Howard Cam; Ki, Wing-Hung
Conference paper

A novel voltage-control scheme for low-voltage DC-DC converters with fast transient recovery

Proceedings of the IEEE 2000 Internaitonal Symposium on Circuits and Systems, v. 1, May 2000, p. 256-259
Lee, Hoi; Mok, Philip Kwok Tai; Ki, Wing Hung
Conference paper

Analysis on an alternative structure of damping-factor-control frequency compensation

ISCAS 2000: IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS - PROCEEDINGS, VOL II: EMERGING TECHNOLOGIES FOR THE 21ST CENTURY, 2000, p. 545-548
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung; Sin, Johnny Kin On
Conference paper

IC controller for phase-controlled dimmable compact fluorescent lamps with closed-loop control

Proceedings - IEEE International Symposium on Circuits and Systems, v. 1, 2000, p. 503-506
Chan, Wilson W.S.; Mok, Philip Kwok Tai; Ng, Alex T.K.; Ki, Wing-Hung; Sin, Johnny Kin On
Conference paper

Lamp Modeling for Design of Dimmable Electronic Ballasts

IEEE Power Electronics Specialists Conference (PESC), v. 3, 2000, p. 1358-1362
Ng, Tai Kai; Ki, Wing-Hung; Mok, Philip Kowk Tai; Sin, Johnny Kin On
Conference paper

1999 6

A novel frequency compensation technique for low-voltage low-dropout regulator

ISCAS '99: PROCEEDINGS OF THE 1999 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 5: SYSTEMS, POWER ELECTRONICS, AND NEURAL NETWORKS, 1999, p. 102-105
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung
Conference paper

Analysis and measurement of DCM power factor correctors

IEEE Power Electronics Specialists Conference (PESC), v. 2, 1999, p. 709-714
Fung, Kin-Siu; Ki, Wing-Hung; Mok, Philip Kwok Tai
Conference paper

Damping-factor-control frequency compensation technique for low-voltage low-power large capacitive load applications

1999 IEEE International Solid-State Circuits Conference, 1999. Digest of Technical Papers. ISSCC, San Francisco, CA, USA, 17 Feb 1999, p. 158-159
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung; Sin, Johnny Kin On
Conference paper

Optimum nested Miller compensation for low-voltage low-power CMOS amplifier design

ISCAS '99: PROCEEDINGS OF THE 1999 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 2: ANALOG AND DIGITAL CIRCUITS, 1999, p. 616-619
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung
Conference paper

Phase-controlled dimmable electronic ballast for fluorescent lamps

IEEE Power Electronics Specialists Conference (PESC), v. 2, 1999, p. 1121-1125
Ki, Wing-Hung; Shi, Jiying; Yau, Elson; Mok, Philip Kwok Tai; Sin, Johnny Kin On
Conference paper

Right-half-plane Zero Removal Technique for Low-voltage Low-power Nested Miller Compensation CMOS Amplifier

Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems, v. 2, 1999, p. 599-602, article number 813179
Leung, Ka Nang; Mok, Philip Kwok Tai; Ki, Wing Hung
Conference paper

1998 2

Analysis of subharmonic oscillation of fixed-frequency current-programming switch mode power converters

IEEE TRANSACTIONS on Circuits and SYSTEMS i-fundamental THEORY and APPLICATIONS, v. 45, (1), 1998, JAN, p. 104-108
Ki, Wing Hung
Article

Signal flow graph in loop gain analysis of DC-DC PWM CCM switching converters

IEEE TRANSACTIONS on Circuits and SYSTEMS i-fundamental THEORY and APPLICATIONS, v. 45, (6), 1998, JUN, p. 644-655
Ki, Wing Hung
Article

1997 3

Re-examination of pole splitting of a generic single stage amplifier

IEEE TRANSACTIONS on Circuits and SYSTEMS i-fundamental THEORY and APPLICATIONS, v. 44, (1), 1997, JAN, p. 70-74
Ki, Wing Hung; Der, Lawrence; Lam, Steve
Article

New universal control methods for power factor correction and DC to DC converter applications

IEEE Applied Power Electronics Conference and Exposition - APEC, v.1, 1997, Feb, p.59-65
Hwang, Jeffery; Chee, Alland; Ki, Wing-Hung
Conference paper

Simple method to design resonant circuits of electronic ballast for fluorescent lamps

Proceedings - IEEE International Symposium on Circuits and Systems, v. 3, 1997, p. 1744-1747
Li, Zhi; Mok, Philip Kwok Tai; Ki, Wing-Hung; Sin, Johnny Kin On
Conference paper

1995 1

Optimal capacitance assignment of switched-capacitor biquads

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, v.42, (6), 1995, Jun, p.334-342
Ki, Wing-Hung; Temes, Gabor C.
Article

1994 1

Analog VLSI implementations of auditory wavelet transforms using switched-capacitor circuits

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, v.41, (9), 1994, Sep, p.572-583
Lin, Jyhfong; Ki, Wing-Hung; Edwards, Thomas; Shamma, Shihab
Article

1992 3

Area-efficient gain- and offset-compensated very-large-time-constant SC biquads

IEEE International Symposium on Circuits and Systems, May 1992, p.1187-1190
Ki, Wing-Hung; Temes, G.C.
Conference paper

Cochlear filters design using a parallel dilating-biquads switched-capacitor filter bank

1992 IEEE International Symposium on Circuits and Systems, 1992. ISCAS '92. Proceedings, San Diego, CA, USA, v. 4, 3-6 May 1992, p. 2053-2056
Lin, Jyhfong; Ki, Wing-Hung; Thompson, K.; Shamma, Shihab
Conference paper

Realization of cochlear filter by VLT switched-capacitor biquads

IEEE Int'l Conf. of Acou., Speech, and Sig. Proc., March, 1992, p.II.245-II.248
Lin, Jyhfong; Ki, Wing-Hung; Thompson, K.; Shamma, Shihab
Conference paper

1991 1

Gain- and offset-compensated switched-capacitor filters

IEEE International Symposium on Circuits and Systems, v. 3, 1991, p.1561-1564
Ki, Wing-Hung; Temes, Gabor C.
Conference paper

1990 2

Low-phase-error offset-compensated switched-capacitor integrator

Electronics Letters, v.26, (13), 1990, Jan, p.957-959
Ki, Wing-Hung; Temes, Gabor C.
Article

Offset-compensated switched-capacitor integrators

IEEE International Symposium on Circuits and Systems, v. 4, 1990, p.2829-2832
Ki, Wing-Hung; Temes, Gabor C.
Conference paper

1989 1

Switched-capacitor modulator circuits

Electronics Letters, v.25, (6), 1989, Mar, p.379-381
Ki, Wing-Hung; Temes, Gabor C.
Article

1987 1

Fast CMOS current amplifier and buffer stage

Electronics Letters, v.23, (13), 1987, Jun, p. 696-697
Temes, Gabor C.; Ki, Wing-Hung
Article

Teaching Assignment

2024-25 Fall 3 2023-24 Summer 0 2023-24 Spring 6 2023-24 Winter 0 2023-24 Fall 4 2022-23 Summer 0

ELEC2910	Academic and Professional Development I
ELEC3910	Academic and Professional Development II
ELEC5520	Power Management Integrated Circuit Design

EESM5310	Power Management Circuits and Systems
EESM6980M	MSc Project
ELEC2910	Academic and Professional Development I
ELEC3910	Academic and Professional Development II
ELEC4900	Final Year Design Project
ELEC5510	Switch Mode Power Converters

EESM5100	Analog IC Analysis and Design
ELEC2420	Basic Electronics
ELEC2910	Academic and Professional Development I
ELEC3910	Academic and Professional Development II

No Teaching Assignments

Research Postgraduate (RPG) Supervision

From January 2021 to December 2024 (As of 21 November 2024)

All Supervisions Current RPGs Graduated RPGs

Current RPGs

Doctor of Philosophy

LIU, Yingming (co-supervision)
Electronic and Computer Engineering
ZHU, Lingfeng
Electronic and Computer Engineering

Master of Philosophy

CHANG, Guozhen
Electronic and Computer Engineering

Graduated RPGs

Doctor of Philosophy

YAO, Yuan
Electronic and Computer Engineering( Completed in 2024 )
LAM, Hon Piu
Electronic and Computer Engineering( Completed in 2023 )
LIU, Yang
Electronic and Computer Engineering( Completed in 2023 )
SARKAR, Sayan
Electronic and Computer Engineering( Completed in 2023 )
WANG, Xuliang
Electronic and Computer Engineering( Completed in 2023 )
MA, Xiaofei
Electronic and Computer Engineering( Completed in 2022 )
ZHONG, Yue
Electronic and Computer Engineering( Completed in 2022 )
HAN, Xu
Electronic and Computer Engineering( Completed in 2021 )
PAL, Soumitra
Electronic and Computer Engineering( Completed in 2021 )

Master of Philosophy

LEUNG, Pok Man
Electronic and Computer Engineering( Completed in 2024 )
QIN, Chunlei
Electronic and Computer Engineering( Completed in 2024 )

Projects

From January 2022 to December 2024

All Projects 7 Leading Projects 4 Participating Projects 3

Technology for Next Generation Wide-/Ultrawide-bandgap Semiconductor Integrated Electronics

下一代寬禁帶與超寬禁帶半導體集成電子技術 Participating

RGC - Strategic Topics Grant
Project Team (HKUST)
CHEN Kevin Jing (Lead)

KI Wing Hung

LEE Ricky Shi-wei

WANG Jiannong

WONG Man Hoi

YANG Yansong
2024 -
Integrated Circuit Implementation of Regulated Class-E Power Amplifier with Capacitor Tuning

集成電路製作的電容調諧穩壓E類功率放大器 Leading

RGC - General Research Fund
Project Team (HKUST)
KI Wing Hung (Lead)
2023 -
Antenna-Detune-Insensitive Auto-Tuning Scheme of Class-D Power Amplifier for Implantable Medical Devices

用於植入式醫療設備可抗天線失諧的自動調諧Class-D功率放大器 Leading

Innovation and Technology Fund
Project Team (HKUST)
KI Wing Hung (Lead)

TSUI Chi Ying
2022 - 2024
Development of a High-Efficient Monolithic Hybrid DC-DC Converter with Ultra-Low Voltage-Conversion-Ratio

具有超低電壓轉換比的高效單片混合 DC-DC 轉換器的研發 Leading

RGC - General Research Fund
Project Team (HKUST)
KI Wing Hung (Lead)
2021 - 2023
High-Efficiency Wide Loading Range Reconfigurable One-stage Rectifier Receiver for Implantable Medical Devices

植入式醫療設備的高效寬負載範圍可重構單級整流器接收器 Leading

Innovation and Technology Fund
Project Team (HKUST)
KI Wing Hung (Lead)
2020 - 2022
Development of a Long-Term Biocompatible Wireless Transcleral Electrical Stimulation Implant System for Pre-clinical Trials

開發用於臨床前試驗的長期生物相容無線鞏膜電刺激植入系統 Participating

Innovation and Technology Fund, Neurotech (Hong Kong) Limited
Project Team (HKUST)
TSUI Chi Ying (Lead)

KI Wing Hung

LEE Ricky Shi-wei
2020 - 2022
Probing the Fundamental Structure of Matter with High Energy Particle Collisions

利用高能粒子撞擊研究物質的基本結構 Participating

RGC - Areas of Excellence Scheme
Project Team (HKUST)
KI Wing Hung
2019 -