Electronic Engineering Department, The Chinese University of Hong Kong - Prof CHENG, Michael Kwok Keung 鄭國強

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Prof CHENG, Michael Kwok Keung 鄭國強

Emeritus Professor
B.Sc.(London), Ph.D. (London), Sr.MIEEE, MIET, CEng (IEE)
homepage Rm 430, Ho Sin Hang Engineering Building phone Tel: +852 3943 8269 This email address is being protected from spambots. You need JavaScript enabled to view it.

Research Interests:

RFIC/MMIC design, Microwave power amplifier design, Advanced designs of microwave circuits for multi-band and re-configurable system applications
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Research Highlights

 

 

Resume of Career

Michael obtained both his B.Sc. (1st class honor) and Ph.D. degree in Electronic Engineering from King's College, University of London, United Kingdom. He was awarded the Siemens Prize, IEE Prize, and Convocation Susquicentennial Prize in Engineering (University of London) in 1986, 1987 and 1988, respectively, for his academic achievements.

He joined the Department of Electronic Engineering at the Chinese University of Hong Kong as Assistant Professor in 1996 and became Full Professor in 2006. He was appointed as the Associate Dean of Engineering (Student Affairs) in 2004-2006. In 2008-2012, he served as Associate Editor of IEEE Microwave and Wireless Components Letters. In 2018-19, he was the Associate Editor of IEEE Transactions on Microwave Theory & Techniques.

He is the first/second author of more than 50 IEEE journal articles and with a citation index of over 2,000 (self-citing excluded). He is also a contributing author of two book chapters: "MMIC Design" and "RFIC & MMIC design and technology", published by the IET in 1995 and 2001, respectively.

Michael is the recipients of the Faculty Service Award (Engineering) in 2007 and 2016, Dean's Exemplary Teaching Award in 2017 and Vice-Chancellor's Exemplary Teaching Award in 2018.


Current Research Interests

RFIC/MMIC design, High efficiency power amplifier design, Linearization techniques, Re-configurable microwave devices, MIMO antenna design

Highlights of Recent Achievements

  • Pioneering work on the development of advanced microwave passive devices for multi-band applications
  • Pioneering work on the development of multi-function and reconfigurable devices for adaptive microwave systems
  • Pioneering work on the development of GaN power amplifier architectures for broadband, high-efficiency and high linearity operation

Taught Courses (All years)

  • Electronic Product Design & Development (UG)
  • Antennas and Wave Propagation for Wireless Communications (UG)
  • Microwave Electronics (UG)
  • RF Circuits and Systems (PG)
  • RFIC and MMIC Design (PG)
  • Advanced Topics in Microwave Engineering (PG)

External Professional Service 

  • Panel Member (Engineering), Research Grants Council (2016 - 2021)
  • ESS Assessment Panel Member, ITC, Government of the HKSAR (2021 - 2023)
  • Member, Appeal Board Panel (Electricity Ordinance), Government of the HKSAR (2018 - 2024)
  • Regular Reviewer: IEEE Transactions on Microwave Theory & Techniques, IEEE Transactions on Circuits & Systems: I & II,  IEEE Microwave & Wireless Technology Letters

External Research Grants Awarded (Past 6 years)

  • RGC/GRF (PI): "Broadband High Efficiency Doherty Power Amplifier Design for Advanced Wireless Systems".
  • RGC/GRF (PI): "Pattern-Reconfigurable High-isolation MIMO Antenna Design for Wireless Handheld Terminals".
  • RGC/GRF (PI): "Self-Linearizing Techniques for Advanced Design of High-Efficiency Doherty Microwave Power Amplifier".

Publications (past 5 Years)

  1. Xie J., Cheng, K.-K.M.,  Fang X., and Yu P.,  “Extension of Output Backoff Range in Three-Stage Load Modulated Balanced Amplifier using Asymmetric Coupling and Non-Z0 Load”, IEEE Transactions on Microwave Theory and Techniques, (early access), July 2024.
  2. Wong, T-W., and Cheng, K.-K.M., “A Simple Analytical Theory of Class-C Power Amplifiers for Large-Signal Intermodulation Distortion Behaviour Investigation”, European Microwave Conference, Paris, Sept. 2024.
  3. Xie J., Cheng, K.-K.M., Yu P., and Fang X., “Dual-band Pseudo-Doherty Load Modulated Balanced Amplifier Design with Arbitrarily Selected Frequency Bands”, IEEE Transactions on Circuits and Systems II, Express Briefs, Vol. 71, No. 8, pp. 3665-3669, Aug. 2024.
  4. Xie J., Cheng, K.-K.M., Yu P., and Fang X., “Mode Extension of Load Modulated Balanced Amplifier with Enhanced Efficiency”, IEEE MTT-S International Microwave Symposium, Washington DC, June. 2024.
  5. Shi J., Fang X., Wei C., Lin T., Zhao L., and Cheng, K.-K. M., “Design of a Highly Efficient Class-F GaN MMIC Power Amplifier using a Multi-Function Bias Network and a harmonic-isolation L-C Resonator,” IEEE Transactions on Circuits and Systems-I: Regular Papers, Vol. 70, No. 12, pp. 5208-5219, Dec. 2023.
  6. Shi J., Fang X., Yu H., Sui J., and Cheng, K.-K.M., “Novel Wideband Millimetre-wave GaN Power Amplifier Design using Transistors with Large Drain Capacitance and High Optimum Load Impedance”, IEEE Transactions on Circuits and Systems II, Express Briefs, Vol. 70, No. 12, pp. 4309-4313, Dec. 2023.
  7. Xie J., Cheng, K.-K.M., Wong T., and Yu P., “Dual-band Pseudo-Doherty Load Modulated Balanced Amplifier Design by Exploiting the Periodicity of Branch-line Coupler”, European Microwave Conference, Berlin, Sept. 2023.
  8. Cheng Y., and Cheng, K.-K.M., “Novel Design of High Isolation Compact Printed Monopoles Array for Dual-band Application”,  Microwave and Optical Technology Letters, Vol. 65, No. 9, pp. 2619-2625, Sept. 2023.
  9. Shi J., Dai W., Fang X., Zhou X., Sui J., Xia X., and Cheng, K.-K.M., “Novel Wideband Fully Integrated GaN Power Amplifier Design using a Hybrid Bandpass-Lowpass Output Matching Network”, IEEE Microwave and Wireless Technology Letters, Vol. 33, No. 8, pp. 1187-1190, Aug. 2023.
  10. Liu H., Xie J,, and Cheng, K.-K. M., “Impact of Non-ideal Auxiliary Current Profile on Linearity of Microwave Doherty Amplifiers: Theory and Experiments,” IEEE Transactions on Circuits and Systems-I: Regular Papers, Vol. 69, No. 6, pp. 2325-2338, June 2022.
  11. Lau C. Y., and Cheng, K.-K.M. “Compact, 14-Pattern-States, Reconfigurable Antenna Design and Characterization”, Asia-Pacific Microwave Conference (APMC), Australia, Dec. 2021.
  12. Lau C. Y., and Cheng, K.-K.M. “Pattern Reconfigurable 2-element MIMO Antenna Design by using Novel Switchable Decoupling and Matching Networks”, Asia-Pacific Microwave Conference (APMC), Australia, Dec. 2021.
  13. Cheng, Y.-F., and Cheng, K.-K. M., “Decoupling of 2 × 2 MIMO Antenna by using Mixed Radiation Modes and Novel Patch Element Design,” IEEE Transactions on Antennas & Wave Propagation, Vol. 69, No. 12, pp. 8204-8213, Dec. 2021.
  14. Liu H. Y., Cheng, K.-K.M., Zhai C. X., and Fang X. H., “Peak-Current-Ratio-Enhanced Compact Symmetrical Doherty Amplifier Design by using Active Harmonic Control”, IEEE Transactions on Microwave Theory and Techniques, Vol. 69, No. 6, pp. 3158-3170, June 2021.
  15. Zhai C. X., Liu H. Y., and Cheng, K.-K.M., “Single-Chip CMOS Reconfigurable Dual-Band Tri-Mode High-Efficiency RF Amplifier Design”, IEEE Transactions on Circuits and Systems II, Express Briefs, Vol. 68, No. 3, pp. 868-872, March 2021.
  16. Cheng, Y.-F., and Cheng, K.-K. M., “MIMO Antenna Design with Reconfigurable Radiation Pattern and High Port Isolation”, European Microwave Conference, The Netherlands, Jan. 2021.
  17. Liu H. Y., and Cheng, K.-K.M. “A Simple Design Methodology of Compact, Wide OBO Range, Symmetrical Doherty Amplifier with Non-Ideal Effects”, Asia-Pacific Microwave Conference (APMC), Hong Kong, Dec. 2020.
  18. Cheng, Y.-F., and Cheng, K.-K. M., “Decoupling of Two-element Printed Dipole Antenna Array by Optimal meandering Design,” IEEE Trans. Antennas & Wave Propagation, pp. 7328-7338, Nov. 2020.
  19. Cheng, Y.-F., and Cheng, K.-K. M., “Compact Wideband Decoupling and matching Network for Dual-Antenna Array,” IEEE Antennas & Wireless Propagation Letters, Vol. 19, pp. 791-795, May 2020.
  20. Liu H. Y., Zhai C. X., and Cheng, K.-K.M., “Novel Dual-band Equal-cell Doherty Amplifier Design with Extended Power Back-off Range”, IEEE Transactions on Microwave Theory and Techniques, Vol. 68, No. 3, pp. 1012-1021, March 2020.
  21. Liu H. Y., Fang, X. H., Cheng, K.-K.M., “Bandwidth Enhancement of Frequency Dispersive Doherty Power Amplifier”, IEEE Microwave and Wireless Components Letters, Vol. 30, No. 2, pp. 185-188, Feb. 2020.
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