Assistant Professor School of Microelectronics

Dr. Xiaohu Fang received the Ph.D. degree from the Chinese University of Hong Kong in 2015. From 2015 to 2016, he was with the Chinese University of Hong Kong, Hong Kong, as a post-doc fellow working on wideband and reconfigurable microwave devices. From 2017 to 2019, he was with the University of Waterloo, Waterloo, ON, Canada, as a post-doc fellow working on 5G Millimeter-wave CMOS integrated transmitter design techniques. From 2020 to 2021/08, he was with the Sun Yat-sen University, as an Associate Professor working on the development of highly efficient transmission techniques for 5G communications and ultra-long range wireless power transfer systems. He is currently an Assistant Professor with the School of Microelectronics, Southern University of Science and Technology, Shenzhen, China. His research targets to develop high-performance microwave and millimetre-wave wireless transmitter and broadband, high efficiency, multifunctional 4G and 5G radio front-end circuits. He has authored or co-authored more than 20 publications on journals and conference proceedings. He is a member of IEEE and a reviewer of well-known journals and conferences such as IEEE TMTT, IEEE MWCL, MTT-S IMS, etc.

Personal Profile

Research

1. Microwave & Millimeter-wave radio front-end circuits

2. Highly efficient wireless transmitter architectures and the associate linearization techniques

3. Broadband and high efficiency RF power amplifier design


Publications Read More

  1. Fang, J. Xia*, and S. Boumaiza, “A 28-GHz beamforming Doherty power amplifier with enhanced AM-PM characteristic,” IEEE Trans. Microw. Theory Techn. vol. 68, no. 7, 3017-3027, Jun. 2020. Impact factor 3.756.
  2. Xia, X. Fang*, and S. Boumaiza, “Millimeter wave SOI-CMOS power amplifier with enhanced AM-PM characteristic,” IEEE Access, vol. 8, pp. 8861-8875, 2020. Impact factor 4.098.
  3. Liu, X. Fang*, and S. Boumaiza, “Dual band 3-way Doherty amplifier with extended back-off power range and bandwidth,” IEEE Trans Circuits Syst. II, Exp. Brief., vol. 67, no. 2, 270-274, Feb. 2020.. Impact factor 3.25
  4. Li, X. Fang*, A. Jund, H. Huang and S. Boumaiza, “Two-port network theory based design method for broadband Class J Doherty amplifiers,” IEEE Access., vol. 7, pp. 51028-51038, 2019. Impact factor 4.098
  5. Fang*, A. Cheng and S. Boumaiza, “Linearity enhanced Doherty power amplifier using output combining network with pre-defined AM-PM characteristic,” IEEE Trans. Microw. Theory Techn.. vol. 67, no. 1, 195-204, Jan. 2019. Impact factor 3.756
  6. Fang*, H. Liu, K. M. Cheng, S. Boumaiza, “Modified Doherty amplifier with extended bandwidth and back-off power range using optimized combining currents,” IEEE Trans. Microw. Theory Techn., vol. 66, no. 12, 5347-5357, Dec. 2018. Impact factor 3.756
  7. Fang*, H. Liu, K. M. Cheng, S. Boumaiza, “Two-way Doherty power amplifier efficiency enhancement by incorporating transistors’ nonlinear phase distortion,” IEEE Microw. Wireless Compon. Lett., vol. 28, no. 2, pp. 168–170, Feb 2018. Impact factor 2.374
  8. Fang*, H. Liu, K. M. Cheng, “Extended Efficiency Range, Equal-cell Doherty Amplifier Design Using Explicit Circuit Model,” IEEE Microw. Wireless Compon. Lett. vol. 27, no. 5, pp. 497–499, May 2017. Impact factor 2.374
  9. Fang*, K. M. Cheng, “Improving power utilization factor of broadband Doherty amplifier by using band-pass auxiliary transformer,” IEEE Trans. Microw. Theory Techn., vol. 63, no. 9, 2811-2820, Sep. 2015. Impact factor 3.756
  10. Fang*, K. M. Cheng, “Extension of high-efficiency range of Doherty amplifier by using complex combining load,” IEEE Trans. Microw. Theory Techn., vol. 62, no. 9, pp. 2038–2047, Sep. 2014. Impact factor 3.756
  11. Liu*, K. M. Cheng, C. Zhai and X. Fang, “Peak-Current-Ratio enhanced compact symmetrical Doherty amplifier design by using active harmonic control”, IEEE Trans. Microw. Theory Techn., vol. 69, no. 6, pp. 3158–3170, Jun. 2021. Impact factor 3.756
  12. Zhou*, W. Chan, W. Feng, X. Fang and D. Ho, “Broadband Doherty power amplifier based on coupled phase compensation network,”, IEEE Trans. Microw. Theory Techn., early access, doi: 10.1109/TMTT.2021.3057628.
  13. Xia*, X. Fang, and S. Boumaiza, “60-GHz Power Amplifier in 45-nm SOI-CMOS Using Stacked Transformer-Based Parallel Power Combiner,” IEEE Microw. Wireless Compon. Lett., vol. 28, no. 8, 711-713, Aug. 2018. Impact factor 2.374
  14. Zhou*, S. Zheng, W. Chan, X. Fang and D. Ho, “Post-matching Doherty power amplifier with extended back-off range based on self-generated harmonic injection”, IEEE Trans. Microw. Theory Techn., vol. 66, no. 4, 1951-1963, Apr. 2018. Impact factor 3.756
  15. Liu*, X. Fang and K. M. Cheng, “”Bandwidth Enhancement of Frequency Dispersive Doherty Power Amplifier,” IEEE Microw. Wireless Compon. Lett., vol. 30, no. 2, 185-188, Feb. 2020. Impact factor 2.374

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fangxh@sustech.edu.cn

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