SCI-publications as first author or corresponding author

• [J01] C. Wang and X. Fang*, "Design of a Wideband and High Isolation Millimeter-Wave GaN Monolithic Integrated Switch Using Bandpass Matching Network," in IEEE Journal of Microwaves, doi: 10.1109/JMW.2025.3649639.
• [J02] C. Wang, Q. Pan and X. Fang*, "A Broadband and Compact GaN Millimeter-Wave MMIC SPDT Switch Using Modified π-Networks," in IEEE Solid-State Circuits Letters, vol. 9, pp. 21-24, 2026, doi: 10.1109/LSSC.2025.3646815.
• [J03] W. Huang and X. Fang*, "Design and Analysis of a Millimeter-Wave Wideband GaN LNA With Inductive Feedback Network," in IEEE Microwave and Wireless Technology Letters, doi: 10.1109/LMWT.2025.3631687.
• [J04] X. Fang*, H. Dong and J. Shi, "An Ultrawideband Back-Off Efficiency-Enhanced Power Amplifier Utilizing In-Band Mode Transition Between Switchless Class-G and Doherty," in IEEE Transactions on Microwave Theory and Techniques, vol. 73, no. 8, pp. 4915-4928, Aug. 2025.
• [J05] X. Fang*, W. Dai and J. Shi, "A Linear and Wideband GaN MMIC Distributed Efficient Power Amplifier Design Using Unequal Power Splitting and Bandpass Unit Network," IEEE Transactions on Microwave Theory and Techniques, vol. 73, no. 5, pp. 2681-2694, May 2025, doi: 10.1109/TMTT.2024.3480451.
• [J06] X. Fang*, J. Shi, C. Wei, Y. Duan, P. Li and Z. Wang, "A Linear Millimeter-Wave GaN MMIC Doherty Power Amplifier With Improved AM-AM and AM-PM Characteristics," IEEE Transactions on Microwave Theory and Techniques, vol. 72, no. 8, pp. 4597-4610, Aug. 2024, doi: 10.1109/TMTT.2023.3349206.
• [J07] X. Fang*, R. Chen and J. Shi, "Switchless Class-G Power Amplifiers: Generic Theory and Design Methodology Using Packaged Transistors," IEEE Transactions on Microwave Theory and Techniques, vol. 72, no. 8, pp. 4625-4637, Aug. 2024, doi: 10.1109/TMTT.2024.3351852.
• [J08] J. Shi, X. Fang*, C. Wei, T. Lin, L. Zhao and K. -K. M. Cheng, "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.
• [J09] J. Shi, X. Fang*, H. Yu, J. Sui and K. -K. M. Cheng, "Novel Wideband Millimeter-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.
• [J10] J. Shi, W. Dai, X. Fang*, X Zhou, J Sui, J Xia, K Cheng, "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.
• [J11] X. 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.
• [J12] J. 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.
• [J13] M. 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.
• [J14] Y. 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.
• [J15] X. 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.
• [J16] X. 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.
• [J17] X. 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.
• [J18] X. 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.
• [J19] X. 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.
• [J20] X. 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.

Other SCI-indexed publications as a co-author:

• [J21] J. Xie, K. -K. M. Cheng, X. Fang and P. Yu, "Extension of Output Backoff Range in Three-Stage Load Modulated Balanced Amplifier Using Asymmetric Coupling and Non- Z0 Load," in IEEE Transa_ctions on Microwave Theory and Techniques, doi: 10.1109/TMTT.2024.3425168.
• [J22] J. Xie, K. -K. M. Cheng, P. Yu and X. Fang, "Dual-Band Pseudo-Doherty Load Modulated Balanced Amplifier Design With Arbitrarily Selected Frequency Bands," in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 71, no. 8, pp. 3665-3669, Aug. 2024, doi: 10.1109/TCSII.2024.3369249.
• [J23] X. Yuan, C. Huang, J. Sui, Y. -F. Cheng, X. Fang and X. Zhu, "Wideband Self-Decoupled Slot MIMO Antennas With Two Transmission Zeros," in IEEE Antennas and Wireless Propagation Letters, vol. 23, no. 1, pp. 99-103, Jan. 2024, doi: 10.1109/LAWP.2023.3318246.
• [J24] J. Sui, Y. -F. Cheng, X. Fang, D. Li, X. Zhu and X. Yuan, "A Dual-Band Decoupling Technique for MIMO Antenna Systems Using Composite Capacitor Circuits," in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 71, no. 1, pp. 116-120, Jan. 2024, doi: 10.1109/TCSII.2023.3305148.
• [J25] X. Y. Zhou, W. S. Chan, W. Feng, X. Fang, T. Sharma and S. Chen, "Broadband Doherty Power Amplifier Based on Coupled Phase Compensation Network," IEEE Trans. Microw. Theory Techn, vol. 70, no. 1, pp. 210-221, Jan. 2022.
• [J26] H. -Y. Liu, K. -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, June 2021.
• [J27] H. 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.
• [J28] J. 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.
• [J29] X. 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.

• [C01] Y. Zhou, X. Fang* and C. Wei, "A High-Accuracy GaN 6-Bit Digital Attenuator Using a Phase Shifter Compensation Unit," 2025 18th IEEE United Conference on Millimeter Waves and Terahertz Technologies (UCMMT), Nanjing, China, 2025, pp. 1-3, doi: 10.1109/UCMMT67044.2025.11286428.
• [C02] H. Dong and X. Fang*, "Investigation and Design of a Ka-band GaN MMIC Power Amplifier with Miniaturized Chip Area," 2025 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM), Hong Kong, 2025, pp. 290-293, doi: 10.1109/iWEM65640.2025.11168021.
• [C03] Y. Zhang, W. Luo, K. Zhang, Z. Zhou, X. Luo,D. Zhan,Q. Zhao,X. Fang, J. Jiang,X. Liu,C. Chen,H. Wu,Q. Pan., "A High-Linearity 4×64Gb/s Driver with 4.2Vppd Swing in 130nm SiGe BiCMOS," 2025 IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA), Macao, China, 2025, pp. 145-146, doi: 10.1109/ICTA68203.2025.11329961.
• [C04] J. Shi, X. Fang*, Q. Zhang, H. Yu and H. Wang, "Theoretical Analysis and Experimental Validation of Enhancing Doherty Amplifier Gain via Asymmetrical Input Power Splitting," 2024 IEEE MTT-S International Wireless Symposium (IWS), Beijing, China, 2024, pp. 1-3, doi: 10.1109/IWS61525.2024.10713545.
• [C05] X. Yu, X. Fang*, J. Shi, G. Lv, C. Wei and J. Sui, "Deep Neural Network based Stable Digital Predistortion using ELU Activation for Switchless Class-G Power Amplifier," 2024 IEEE MTT-S International Wireless Symposium (IWS), Beijing, China, 2024, pp. 1-3, doi: 10.1109/IWS61525.2024.10713713.
• [C06] R. Chen, J. Shi, and X. Fang*, “A High-Efficiency Ku-Band Monolithic Class-F Power Amplifier with Zero-Point Filtering Function,” 2024 National Conference on Microwave and Millimeter Wave (NCMMW 2024), Beijing, China, 2024.
• [C07] J. Xie, K. -K. M. Cheng, P. Yu and X. Fang, "Mode Extension of Load-Modulated Balanced Amplifier with Enhanced Efficiency," 2024 IEEE/MTT-S International Microwave Symposium - IMS 2024, Washington, DC, USA, 2024, pp. 584-587, doi: 10.1109/IMS40175.2024.10600363.
• [C08] J. Shi, X. Fang*, X. Zhou, X. Yan, W. Lin and L. Zhao, "A GaN MMIC Inverse Class-F Power Amplifier Using Co-Designed Bias Network and LC Resonator," 2024 15th Global Symposium on Millimeter-Waves & Terahertz (GSMM), Hong Kong, 2024, pp. 153-155, doi: 10.1109/GSMM61775.2024.10553095.
• [C09] W. Huang, X. Fang*, W. Lin, G. Huang, X. Wang and L. Zhao, "A Wideband Millimeter-Wave GaN Low-Noise Amplifier Using Multi-Stage Feedback Compensation," 2023 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), Chengdu, China, 2023, pp. 1-3, doi: 10.1109/IMWS-AMP57814.2023.10381036.
• [C10] B. Wei, J. Shi, X. Fang*, X. Zhou, Q. Wang and H. Yu, "Stability and Efficiency Enhancement of a C-band Class-F Power Amplifier Using a Coupling Compensation Method," 2022 IEEE Conference on Antenna Measurements and Applications (CAMA), Guangzhou, China, 2022, pp. 1-4.
• [C11] J. Shi, X. Fang*, J. Sui, X. Zhou, H. Yu and H. Yu, "A Linear Envelope Tracking Power Amplifier with Varactor-based Phase Compensation Network," 2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (IWEM), Guangzhou, China, 2021, pp. 1-3.
• [C12] J. Sui, X. Fang and Z. Luo, "A Four-Element 5G MIMO Antenna Design for Mobile Terminals Using Self-Curing Decoupling Technique," 2021 Cross Strait Radio Science and Wireless Technology Conference (CSRSWTC), Shenzhen, China, 2021, pp. 117-119.
• [C13] J. Shi, X. Fang* and X. Zhou, "A New Method to Design Highly Efficient C-band Harmonic-tuned Power Amplifiers," 2021 Cross Strait Radio Science and Wireless Technology Conference (CSRSWTC), Shenzhen, China, 2021, pp. 154-156.
• [C14] X. Y. Zhou, W. S. Chan, W. J. Feng, X. Fang, T. Sharmar, and Z. Liu, “Bandwidth enhanced Doherty power amplifier based on coupled phase compensation network with specific optimal impedance,” IEEE MTT-S International Wireless Symposium (IWS 2020), Shanghai, China., 2020, pp. 1-3.
• [C15] X. Fang*, H. Golestaneh and S. Boumaiza, “Broadband and linearity enhanced Doherty power amplifier using complex-valued Load Modulation”, IEEE MTT-S 2018 Int. Microw. Symp. Dig., USA, Jun., 2018.
• [C16] H. Liu*, X. Fang* and K. M. Cheng, “Built-in AM/AM and AM/PM distortion study of generalized symmetrical Doherty amplifier”, Proc. European Microwave Conference, pp. 148–151, Oct. 2017
• [C17] X. Fang* and K. M. Cheng, "Broadband, wide efficiency range, Doherty amplifier design using frequency-varying complex combining load", IEEE MTT-S 2015 Int. Microw. Symp. Dig., USA, May, 2015.
• [C18] X. Fang, G. Wu*, W. Li, Y. Zhai, "A lumped-element analog predistorter for VHF application", IEEE Int. Symp. on Signals Systems and Electronics, Nanjing, China, Sep. 2010.