I am a Ph.D student from RF & Microwave Research Group at University College Dublin (UCD), supervised by Prof. Anding Zhu. I received my B.E. and M.E. degrees from South China University of Technology (SCUT), Guangzhou, China, in 2019 and 2022, respectively.
My current research interests include integrated high-efficiency power amplifier (PA) design, and next-generation transmitter design.
🔥 News
- 2025.06: 🎉🎉 I received the 2025 IEEE Microwave Theory and Technology Society (MTT-S) graduate fellowship!
📝 Publications
Journal Articles
Ruijia Liu; Haoyang Jia; Lin Qi; Anding Zhu
- This presented a millimetre-wave gallium nitride (GaN) monolithic microwave integrated circuit (MMIC) Doherty power amplifier (DPA) for 5G-NR applications. The bandwidth of the DPA is extended by reducing the intrinsic output impedance of the power-stage peaking transistor at the back-off by selecting a proper gate bias voltage.
Haoyang Jia, Lingtao Jiang, Xiu Yin Zhang, Yanjie Wang, Anding Zhu
- This work proposed an ultra-compact single-channel bidirectional amplifier architecture. The bi-directional gate-switching cascode amplifier is leveraged in TRX front end to reduce the leakage current in transmitting (TX) and receiving (RX) mode to enhance system performance with an ultra-compact size.
A 26-GHz GaN MMIC load-modulated balanced amplifier with miniaturized dual-loop coupler
Haoyang Jia; Ruijia Liu; Qian Wu; Anding Zhu
- This work proposed the miniaturized dual-loop (MDL) coupler that reduced the chip area while ensuring good isolation without compromising the load modulation of the LMBA. The miniaturized coupler facilitates the implementation of millimeter-wave LMBA in monolithic microwave-integrated circuits (MMICs).
Conference Papers
- A Linearity-Enhanced mm-Wave GaN MMIC Power Amplifier with Inter-Stage AM/AM Compensation and AM/PM Cancellation, R. Liu, S. Veisee, H. Jia and A. Zhu, 2024 25th International Microwave and Radar Conference (MIKON), Wroclaw, Poland, 2024, pp. 37-41.
- A 52-67GHz Ultra-Compact Bi-directional Gate-switching Cascode Amplifier with Tri-coil Broadband Matching in 40-nm CMOS, H. Jia, Y. Wang and A. Zhu, 2023 IEEE Custom Integrated Circuits Conference (CICC), San Antonio, TX, USA, 2023, pp. 1-2.
- A 60 GHz IQ Transmitter with Psat of 16.6 dBm and Conversion Gain of 36.7 dB in 40 nm CMOS, J. Fang, H. Jia, S. Li, G. Feng and Y. Wang, 2022 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), Guangzhou, China, 2022, pp. 1-3.
- A High-Efficiency 28GHz Doherty Power Amplifier with Peak PAE of 37.3% in 40nm CMOS, S. Li, H. Jia, W. Zheng, G. Feng, Y. Zou and Y. Wang, 2022 IEEE MTT-S International Wireless Symposium (IWS), Harbin, China, 2022, pp. 1-3.
- A Broadband Tri-Coil Based Transformer Design for mm-wave Cascode Amplifiers, H. Jia, G. Feng and Y. Wang, 2021 IEEE Asia Pacific Conference on Circuit and Systems (APCCAS), Penang, Malaysia, 2021, pp. 125-128.
🎖 Honors and Awards
- 2025.06 IEEE Microwave Theory and Technology Society (MTT-S) Graduate Fellowship
- 2021.06 Chinese National scholarship
- 2021.05 First prize, Chinese National Integrated Circuit Innovation and Entrepreneurship Competition (1st Place)
- 2021.03 Second price, The 16th China Postgraduate Electronic Design Competition South China Division
- 2018.06 First Prize, Electronic Design Competition of Guangdong Province, China
📖 Educations
- 2022.09 - present, Ph.D. in Electronic Engineering, University College Dublin, Dublin, Ireland (Advisor: Prof. Anding Zhu).
- 2019.09 - 2022.06, Master in Integrated Circuit Engineering, South China University of Technology, Guangdong, China (Advisor: Prof. Yanjie Wang).
- 2019.09 - 2022.06, Bachelor in Electronic Science and Technology, South China University of Technology, Guangdong, China.
💻 Work Experience
- 2022.06 - 2022.09, Senior RFIC Engineer, ZEKU, Shanghai, China.
- 2020.01 - 2022.05, mm-Wave IC Engineer (Internship), Jelicomm, Shenzhen, China
💬 Skills
- Strong CAD design skills in Cadence Virtuoso, HFSS, ADS Momentum.
- RF&MM-Wave Measurement skills: VNC, PNA Network Analyzer, Spectrum Analyzer, Power Sensor/Meter, Signal Generator, Power Supplies, Waveform Generator
- Language: Mandarin (native), English (proficient)