The great pleasure in life is doing what people say you cannot do

Profile- B.Eng., M.Phil. and Ph.D., Electrical and Electronic Engineering, The Hong Kong University of Science and Technology (HKUST)
- Associate Professor, Department of Electronic Engineering, The Chinese University of Hong Kong (CUHK)
- Senior Member, IEEE
- Chairman of IEEE (Hong Kong) Electron Device/Solid-State Circuit Joint Chapter, 2012
- Member of Conference Organization Committee: IEEE EDSSC 2006, 2008, 2010 and 2013, IEEE DELTA 2008, and IEEE VLSI SoC 2011
- Member of the Editorial Board of Active and Passive Electronic Components, Hindawi Publishing Corporation
- Paper Reviewer of IEEE Journals: Access, JSSC, OJCAS, TCAS-I, TCAS-II, TPE, TIE, TVLSI, TBCAS, TCAD, TED and Sensors Journal
- External Examiner of Thesis Committee: CityU, HKUST, HKU and NTU (Singapore)
- Recipient of the Young Scientist Award of the Hong Kong Institution of Science, 2003
- Recipient of the Departmental Exemplary Teaching Awards, CUHK, 2006-2007, 2009-2010, 2010-2011, 2011-2012 and 2015-2016
- Recipient of the Faculty Exemplary Teaching Awards, CUHK, 2007 and 2016
- Co-recipient of the Best Paper Awards in IEEE Student Symposium ED/SSC in 2011 and 2014
- Co-recipient of the Best Paper Award in 2015 IEEE TENCON
- Co-recipient of the Best Paper Award in 2019 IEEE EDSSC

- Email: knleung@ee.cuhk.edu.hk
- Tel: (852) 3943-8457 (Office)
- Fax: (852) 2603-5558

- ELEG3202 Analog Integrated Circuits
- ELEG4215 Power Converter Circuits
- ELEG5726 Power-Management Technology

- Enrichment of Electronic Technology Learning Through Engineering Designs

- Power-Management Integrated Circuits
- Ultra-Low-Power Analog Integrated Circuits

- Current: 5 Ph.D Students
- Graduated: 6 Ph.D Students, 10 M.Phil. Students and 23 M.Sc. Students

- Published 66 Journal Articles and 66 International Conference Papers
- ResearcherID
- Google Scholar Profile

- Power Management for System-On-a-Chip Design in Nano-Scale Technology
- A Power-Supply IC for WiMAX Transmitter
- Transient-Enhanced Low-Dropout Regulators with Voltage-Spike Detector Based on Capacitive Coupling
- Digital-Control SIMO DC-DC Converter with Enhanced Output Power of Individual Sub-Converter
- Development of Fast Transient Low-Dropout Regulator Based on Dominant-Pole Tracking and Cancellation
- Low-dropout Regulators with Multiple Pole-Zero Cancellations
- Multiple-Output Buck-Boost DC-DC Converters with Enhanced Attenuation of Self- and Cross-regulations
- Development of Capacitor-Free Three-Stage Amplifier Structure
- Develop a Configurable RF Interface Module of UHF RFID Tag for Different Technology Nodes
- Study the Design Challenges of 90nm Technology UHF RFID Tag IC
- Power-Management Circuit for Passive UHF RFID Tag
- High-Efficiency SIMO Power Converter for SoC
- Automated and Continuous Monitoring of Polycyclic Aromatic Hydrocarbon in Air Pollutants

- Frequency Compensation Techniques for Low-Power Multistage Amplifiers. U.S. Patent 6,208,206, Mar. 27, 2001, licensed.
- CMOS Voltage Reference. U.S. Patent 6,441,680, Aug. 27, 2002, licensed.
- Low Dropout Regulator Capable of On-Chip Implementation. U.S. Patent 7,205,827, Apr. 17, 2007, licensed.
- Single-Transistor-Control Low-Dropout Regulator. U.S. Patent 7,285,942, Oct. 23, 2007, licensed.
- Area-Efficient Capacitor-Free CMOS Low-Dropout Regulator. U.S. Patent 7,495,422, Feb. 24, 2009, licensed.
- End-Point Prediction Scheme for Voltage Regulators. U.S. Patent 7,619,395, Nov. 17, 2009, licensed.
- Low Dropout Regulator Capable of On-Chip Implementation. U.S. Patent RE42,116, Feb. 8, 2011.
- Single-Transistor-Control Low-Dropout Regulator. U.S. Patent RE42,335, May 10, 2011.

- K. N. Leung, P. K. T. Mok, W. H. Ki and J. K. O. Sin, "Three-Stage Large Capacitive Load Amplifier with Damping-Factor-Control Frequency Compensation," IEEE Journal of Solid-State Circuits, Vol. 35, No. 2, pp. 221-230, Feb. 2000.
- K. N. Leung and P. K. T. Mok, "Nested Miller Compensation in Low-Power CMOS Design," IEEE Transactions on Circuits and Systems II, Vol. 48, No. 4, pp. 388-394, Apr. 2001.
- K. N. Leung and P. K. T. Mok, "Analysis of Multi-Stage Amplifier - Frequency Compensation," IEEE Transactions on Circuits and Systems I, Vol. 48, No. 9, pp. 1041-1056, Sept. 2001.
- K. N. Leung and P. K. T. Mok, "A Sub-1-V 15-ppm/
^{o}C CMOS Bandgap Voltage Reference without Requiring Low Threshold Voltage Device," IEEE Journal of Solid-State Circuits, Vol. 37, No. 4, pp. 526-530, Apr. 2002. - K. N. Leung and P. K. T. Mok, "A CMOS Voltage Reference Based on Weighted ΔV
_{GS}for CMOS Low-Dropout Linear Regulators," IEEE Journal of Solid-State Circuits, Vol. 38, No. 1, pp. 146-150, Jan. 2003. - K. N. Leung, P. K. T. Mok and C. Y. Leung, "A 2-V 23-µA 5.3-ppm/
^{o}C Curvature-Compensated CMOS Bandgap Reference," IEEE Journal of Solid-State Circuits, Vol. 38, No. 3, pp. 561-564, Mar. 2003. - K. N. Leung and P. K. T. Mok, "A Capacitor-Free CMOS Low-Dropout Regulator with Damping-Factor-Control Frequency Compensation," IEEE Journal of Solid-State Circuits, Vol. 38, No. 10, pp. 1691-1702, Oct. 2003.
- H. Lee, K. N. Leung and P. K. T. Mok, "A Dual-Path Bandwidth Extension Amplifier Topology with Dual-Loop Parallel Compensation," IEEE Journal of Solid-State Circuits, Vol. 38, No. 10, pp. 1739-1744, Oct. 2003.
- C. Y. Leung, P. K. T. Mok, K. N. Leung and M. Chan, "An Integrated CMOS Current-Sensing Circuit for Low-Voltage Current-Mode Buck Regulator," IEEE Transactions on Circuits and Systems II, Vol. 52, No. 7, pp. 394-397, Jul. 2005.
- H. Lee, P. K. T. Mok and K. N. Leung, "Design of Low-Power Analog Drivers Based on Slew-Rate Enhancement Circuits for CMOS Low-Dropout Regulators," IEEE Transactions on Circuits and Systems II, Vol. 52, No. 9, pp. 563-567, Sept. 2005.
- C. Y. Leung, P. K. T. Mok and K. N. Leung, "A 1-V Integrated Current-Mode Boost Converter in Standard 3.3/5-V CMOS Technologies," IEEE Journal of Solid-State Circuits, Vol. 40, No. 11, pp. 2265-2274, Nov. 2005.
- M. Siu, P. K. T. Mok, K. N. Leung, Y. H. Lam and W. H. Ki, "A Voltage-Mode PWM Buck Converter with End-Point Prediction," IEEE Transactions on Circuits and Systems II, Vol. 53, No. 4, pp. 294-298, Apr. 2006.
- S. K. Lau, P. K. T. Mok and K. N. Leung, "A Low-Dropout Regulator for SoC with Q-Reduction," IEEE Journal of Solid-State Circuits, Vol. 42, No. 3, pp. 658-664, Mar. 2007.
- T. Y. Man, K. N. Leung, C. Y. Leung, P. K. T. Mok and M. Chan, "Development of Single-Transistor-Control LDO Based on Flipped Voltage Follower for SoC," IEEE Transactions on Circuits and Systems I, Vol. 55, No. 5, pp. 1392-1401, Jun. 2008.
- S. K. Tang, K. P. Pun, C. S. Choy, C. F. Chan and K. N. Leung, "A Fully Differential Band-Selective Low Noise Amplifier for MB-OFDM UWB Receivers," IEEE Transactions on Circuits and Systems II, Vol. 55, No. 7, pp. 653-657, Jul. 2008.
- A. K. Y. Wong, K. P. Pun, Y. T. Zhang and K. N. Leung, "A Low-Power CMOS Front-End for Photoplethysmographic Signal Acquisition with Robust DC Photocurrent Rejection," IEEE Transactions on Biomedical Circuits and Systems, Vol. 2, No. 4, pp. 280-288, Dec. 2008.
- P. Y. Or and K. N. Leung, "An Output-Capacitorless Low-Dropout Regulator with Direct Voltage-Spike Detection," IEEE Journal of Solid-State Circuits, Vol. 45, No. 2, pp. 458-466, Feb. 2010.
- C. F. Chan, K. P. Pun, K. N. Leung, J. P. Guo, L. L. K. Leung and C. S. Choy, "Low-Power Continuously-Calibrated Clock Recovery Circuit for UHF RFID EPC Class-1 Generation-2 Transponders," IEEE Journal of Solid-State Circuits, Vol. 45, No. 3, pp. 587-599, Mar. 2010.
- A. K. Y. Wong, K. N. Leung, K. P. Pun and Y. T. Zhang, "A 0.5 Hz Highpass-Cutoff Dual-Loop Transimpedance Amplifier for Wearable NIR Sensing Device," IEEE Transactions on Circuits and Systems II, Vol. 57, No. 7, pp. 531-535, Jul. 2010.
- J. P. Guo and K. N. Leung, "A 6-µW Chip-Area-Efficient Output-Capacitorless LDO in 90-nm CMOS Technology," IEEE Journal of Solid-State Circuits, Vol. 45, No. 9, pp. 1896-1905, Sept. 2010.
- K. N. Leung and Y. S. Ng, "A CMOS Low Dropout Regulator with a Momentarily Current-Boosting Voltage Buffer," IEEE Transactions on Circuits and Systems I, Vol. 57, No. 9, pp. 2312-2319, Sept. 2010.
- P. Y. Or and K. N. Leung, "A Fast-Transient Low-Dropout Regulator with Load-Tracking Impedance Reduction and Loop-Gain Boosting," IEEE Transactions on Circuits and Systems II, Vol. 57, No. 10, pp. 757-761, Oct. 2010.
- M. Ho, K. N. Leung and K.-L. Mak, "A Low-Power Fast-Transient 90-nm Low-Dropout Regulator with Multiple Small-Gain Stages," IEEE Journal of Solid-State Circuits, Vol. 45, No. 11, pp. 2466-2475, Nov. 2010.
- K. N. Leung, Y. Y. Mai and P. K. T. Mok, "A Chip-Area Efficient Voltage Regulator for VLSI Systems," IEEE Transactions on VLSI Systems, Vol. 18, No. 12, pp. 1757-1762, Dec. 2010.
- M. Ho and K. N. Leung, "Dynamic Bias-Current Boosting Technique for Ultra-Low-Power Low-Dropout Regulator in Biomedical Applications," IEEE Transactions on Circuits and Systems II, Vol. 58, No. 3, pp. 174-178, Mar. 2011.
- J. B. Jia and K. N. Leung, "A Digital-Control Single-Inductor Triple-Output DC-DC Converter with Pre-Sub-Period Inductor-Current Control," IEEE Transactions on Power Electronics, Vol. 27, No. 4, pp. 2028-2042, Apr. 2012.
- Y. Q. Zheng, H. Chen and K. N. Leung, "A Fast-Response Pseudo-PWM Buck Converter with PLL-Based Hysteresis Control," IEEE Transactions on VLSI Systems, Vol. 20, No. 7, pp. 1167-1174, Jul. 2012.
- K. W. Li, K. N. Leung and L. L. K. Leung, "Sub-mW LC Dual-Input Injection-Locked Oscillator for Autonomous WBSNs," IEEE Transactions on VLSI Systems, Vol. 21, No. 3, pp. 546-553, Mar. 2013.
- T. W. Mui, M. Ho, K. H. Mak, J. P. Guo, H. Chen and K. N. Leung, "An Area-Efficient 96.5%-Peak-Efficiency Cross-Coupled Voltage Doubler with Minimum Supply of 0.8V," IEEE Transactions on Circuits and Systems II, Vol. 61, No. 9, pp. 656-660, Sep. 2014.
- K. H. Mak and K. N. Leung, "A Signal- and Transient-Current Boosting Amplifier for Large Capacitive Load Applications," IEEE Transactions on Circuits and Systems I, Vol. 61, No. 10, pp. 2777-2785, Oct. 2014.
- K. H. Mak, M. W. Lau, J. P. Guo, T. W. Mui, M. Ho, W. L. Goh and K. N. Leung, "A 0.7-V 24-µA Hybrid OTA Driving 15-nF Capacitive Load with 1.46-MHz GBW," IEEE Journal of Solid-State Circuits, Vol. 50, No. 11, pp. 2750-2757, Nov. 2015.
- H. Wang, X. Tang, C. S. Choy, K. N. Leung and K. P. Pun, "A 5.4-mW 180-cm Transmission Distance 2.5-Mbps Advanced Techniques Based Novel Intra-Body Communication Receiver Analog Front End," IEEE Transactions on VLSI Systems, Vol. 23, No. 12, pp. 2829-2841, Dec. 2015.
- Y. Q. Zheng, M. Ho, J. P. Guo, K.-L. Mak and K. N. Leung, "A Single-Inductor Multiple-Output Auto-Buck-Boost DC-DC Converter with Auto Phase Allocation," IEEE Transactions on Power Electronics, Vol. 31, No. 3, pp. 2296-2313, Mar. 2016.
- M. Ho, J. P. Guo, T. W. Mui, K. H. Mak, W. L. Goh, H. C. Poon, S. Bu, M. W. Lau and K. N. Leung, "A Two-Stage Large-Capacitive-Load Amplifier with Multiple Cross-Coupled Small-Gain Stages," IEEE Transactions on VLSI Systems, Vol. 24, No. 7, pp. 2580-2592, Jul. 2016.
- M. Ho, J. P. Guo, K. H. Mak, W. L. Goh, S. Bu, Y. Q. Zheng, X. Tang and K. N. Leung, "A CMOS Low-Dropout Regulator with Dominant-Pole Substitution," IEEE Transactions on Power Electronics, Vol. 31, No. 9, pp. 6362-6371, Sep. 2016.
- Y. Q. Zheng, M. Ho, J. P. Guo and K. N. Leung, "A Single-Inductor Multiple-Output Auto-Buck-Boost DC-DC Converter with Tail Current Control," IEEE Transactions on Power Electronics, Vol. 31, No. 11, pp. 7857-7875, Nov. 2016.
- S. Bu, J. P. Guo and K. N. Leung, "A 200-ps-Response-Time Output-Capacitorless Low-Dropout Regulator with Unity-Gain Bandwidth >100 MHz in 130-nm CMOS," IEEE Transactions on Power Electronics, Vol. 33, No. 4, pp. 3232-3246, Apr. 2018.
- S. Bu, K. N. Leung, Y. Lu, J. P. Guo and Y. Q. Zheng, "A Fully Integrated Low-Dropout Regulator with Differentiator-Based Active Zero Compensation," IEEE Transactions on Circuits and Systems I, Vol. 65, No. 10, pp. 3578-3591, Oct. 2018.
- C. H. Hung, Y. Q. Zheng, J. P. Guo and K. N. Leung, "Bandwidth and Slew Rate Enhanced OTA with Sustainable Dynamic Bias," IEEE Transactions on Circuits and Systems II, Vol. 67, No. 4, pp. 635-639, Apr. 2020.
- X. Ding, P. K. Chan and K. N. Leung, "A 40nm CMOS Hysteretic Buck DC-DC Converter with Digital-Controlled Power-Driving-Tracked-Duration Current Pump," IEEE Access, Vol. 8, pp. 177374-177384, Sep. 2020.
- Y. Q. Zheng, J. P. Guo and K. N. Leung, "A Single-Inductor Multiple-Output Buck/Boost DC-DC Converter With Duty-Cycle and Control-Current Predictor," IEEE Transactions on Power Electronics, Vol. 35, No. 11, pp. 12022-12039, Nov. 2020.