LIU, Xun
Assistant Professor

Education Background
Ph.D., Electronic and Computer Engineering (ECE), the Hong Kong University of Science and Technology (HKUST), Hong Kong
B.Eng., College of Electronic Engineering & Chu Kochen Honors College, Zhejiang University, P.R. China
?

Research Field
Power Management Integrated Circuits Design
Personal Website
http://ee.ust.hk/~xliuam/
Email
liuxun@cuhk.edu.cn
Biography
Dr. Xun Liu is an Assistant Professor with the School of Science and Engineering (SSE), Chinese University of Hong Kong, Shenzhen. Her research interests include power management integrated circuits design, radio-frequency power amplifier system design for 5G, power management module design for Internet-of-Things (IoT), a monolithic system design of GaN device and its driver, etc.
Dr. Liu received the B.Eng. degree in Electronic and Information Engineering from Zhejiang University, China in 2011, and the Ph.D. degree in electronic and computer engineering from The Hong Kong University of Science and Technology (HKUST), Hong Kong, in 2017. She was a senior design engineer with Qualcomm, Santa Clara, CA, USA, working on cutting-edge integrated circuits and systems designs for 5G application and holding 2 US patents.
Dr. Liu published more than ten papers in IEEE journals and conferences in IC design. Her first-authored papers include one in International Solid-State Circuit Conference (ISSCC), the most prominent conference in the entire IC field and 2 in Journal of Solid-State Circuits (JSSC), the most renowned journal in IC field.

Academic Publications
Xun Liu, H. Zhang, P. K. T. Mok, H. C. Luong, “A Multi-Loop-Controlled AC-Coupling Supply Modulator With a Mode-Switching CMOS PA in an EER System With Envelope Shaping”, IEEE J. Solid-State Circuits (JSSC), vol. 54, no. 6, pp. 1553-1563, June 2019.
Xun Liu, C. Huang and P. K. T. Mok, “A High-Frequency 3-Level Buck Converter with Real-Time Calibration and Wide Output Range for Fast-DVS,” IEEE J. Solid-State Circuits (JSSC), vol. 53, no. 2, pp. 582-595, Feb. 2018.
Xun Liu, H. Zhang, M. Zhao, X. Chen, P. K. T. Mok and H. C. Luong, “A 2.4V 23.9dBm 35.7%-PAE -32.1dBc-ACLR LTE-20MHz Envelope-Shaping-and-Tracking System with a Multiloop-Controlled AC-Coupling Supply Modulator and a Mode-Switching PA,” in IEEE Int. Solid-State Circuits Conference (ISSCC), San Francisco, USA, Feb. 2017, pp. 38-39.
Xun Liu, C. Huang and P. K. T. Mok, “A 50MHz 5V 3W 90% Efficiency 3-Level Buck Converter with Real-Time Calibration and Wide Output Range for Fast-DVS in 65nm CMOS,” in IEEE Symposium of VLSI Circuits (VLSIC), Honolulu, USA, Jun. 2016.
Xun Liu, P. K. T. Mok, J. Jiang and W.-H. Ki, “Analysis and Design Considerations of Integrated 3-Level Buck Converters,” IEEE Trans. Circuits and Systems (TCAS-I), vol. 63, no. 5, pp. 671-682, May 2016.
Xun Liu, C. Huang and P. K. T. Mok, “Dynamic Performance Analysis of 3-level Integrated Buck Converters”, in IEEE ISCAS, Lisbon, Portugal, May 2015, pp. 2093-2096.
Xun Liu, J. Jiang, P. K. T. Mok and W.-H. Ki, “Methods for Measuring Loop-Gain Function of High-Frequency DC-DC Converters,” in IEEE APCCAS, Jeju, Korea, Oct. 2016, pp. 247-249.
S. H. Wu, Xun Liu, Q. Wan, Q. Kuai, Y.-K. Teh, P. K. T. Mok, “A 0.3-V Ultralow-Supply- Voltage Boost Converter for Thermoelectric Energy Harvesting with Time-Domain-Based MPPT”, in IEEE Solid-State Circuits Letters (SSCL), in revision.
J. Jiang, Xun Liu, W. H. Ki, P. K. T. Mok and Y. Lu, “A Multi-Phase Switched-Capacitor Converter for Fully Integrated AMLED Micro Display System,” in IEEE Trans. Power Electronics (T-PEL), vol. 35, no. 6, pp. 6001-6011, Jun. 2020.
J. Jiang, Xun Liu, C. Huang, W. H. Ki, P. K. T. Mok and Y. Lu, “Subtraction-Mode Switched-Capacitor Converters With Parasitic Loss Reduction,” in IEEE Trans. Power Electronics (T-PEL), vol.35, no. 2, pp. 1200-1204, Feb. 2020.
J. Jiang, Xun Liu, W. H. Ki, P. K. T. Mok and Y. Lu, “Circuit Techniques for High Efficiency Fully-Integrated Switched-Capacitor Converters,” in IEEE Trans. Circuits and Systems II (TCAS-II), vol. 68, no. 2, pp. 556-561, Feb. 2021. (Invited paper)
J. Jiang, Y. Lu, Xun Liu, W. H. Ki, P. K. T. Mok, S. P. U and R. P. Martins, “A Dual-Output SC Converter with Dynamic Power Allocation for Multi-Core Application Processors,” in IEEE Asia and South Pacific Design Automation Conference (ASPDAC), Jan. 2018, pp. 285-286.