Zijie Gao (Student Member, IEEE) received the B.S. degree from Tsinghua University, Beijing, China, in 2019, where he is currently pursuing the Ph.D. degree with Department of Electronic Engineering, Tsinghua University, Beijing, China. From November 2019 to June 2020, he was a Visiting Researcher with the Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX, USA. His research interests include low-power SAR analog-to-digital converter (ADC) and high-speed ADC designs.