A2.1-ppm/°C current-mode CMOS bandgap reference with piecewise curvature compensation. - Ruocheng Wang; Wengao Lu; Yuze Niu; Zhaokai Liu; Meng Zhao; Yacong Zhang; Zhongjian Chen (ISCAS, 2017)

A mm-Sized Wireless Implantable Device for Electrical Stimulation of Peripheral Nerves. - Jayant Charthad; Ting Chia Chang; Zhaokai Liu; Ahmed Sawaby; Marcus J. Weber; Sam W. Baker; Felicity Gore; Stephen A. Felt; Amin Arbabian (IEEE Trans. Biomed. Circuits Syst., 2018)

A Sub-1ppm/°C Current-Mode CMOS Bandgap Reference With Piecewise Curvature Compensation. - Ruocheng Wang; Wengao Lu; Meng Zhao; Yuze Niu; Zhaokai Liu; Yacong Zhang; Zhongjian Chen (IEEE Trans. Circuits Syst. I Regul. Pap., 2018)

An Automated and Process-Portable Generator for Phase-Locked Loop. - Zhongkai Wang; Minsoo Choi 002; Eric Chang; John Charles Wright; Wooham Bae; Sijun Du; Zhaokai Liu; Nathan Narevsky; Colin Schmidt 001; Ayan Biswas; Borivoje Nikolic; Elad Alon (DAC, 2021)

8 An Output-Bandwidth-Optimized 200Gb/s PAM-4 100Gb/s NRZ Transmitter with 5-Tap FFE in 28nm CMOS. - Minsoo Choi 002; Zhongkai Wang; Kyoungtae Lee; Kwanseo Park; Zhaokai Liu; Ayan Biswas; Jaeduk Han; Elad Alon (ISSCC, 2021)

A Ring-Oscillator Sub-Sampling PLL With Hybrid Loop Using Generator-Based Design Flow. - Zhongkai Wang; Minsoo Choi 002; John Charles Wright; Kyoungtae Lee; Zhaokai Liu; Bozhi Yin; Jaeduk Han; Sijun Du; Elad Alon (ISCAS, 2022)

A 200Gb/s PAM-4 Transmitter with Hybrid Sub-Sampling PLL in 28nm CMOS Technology. - Zhongkai Wang; Minsoo Choi 002; Paul Kwon; Kyoungtae Lee; Bozhi Yin; Zhaokai Liu; Kwanseo Park; Ayan Biswas; Jaeduk Han; Sijun Du; Elad Alon (VLSI Technology and Circuits, 2022)

An Output Bandwidth Optimized 200-Gb/s PAM-4 100-Gb/s NRZ Transmitter With 5-Tap FFE in 28-nm CMOS. - Zhongkai Wang; Minsoo Choi 002; Kyoungtae Lee; Kwanseo Park; Zhaokai Liu; Ayan Biswas; Jaeduk Han; Sijun Du; Elad Alon (IEEE J. Solid State Circuits, 2022)

Automated Design of Analog Circuits Using Reinforcement Learning. - Keertana Settaluri; Zhaokai Liu; Rishubh Khurana; Arash Mirhaj; Rajeev Jain; Borivoje Nikolic (IEEE Trans. Comput. Aided Des. Integr. Circuits Syst., 2022)

Cross-Entropy Regularized Policy Gradient for Multirobot Nonadversarial Moving Target Search. - Hongliang Guo; Zhaokai Liu; Rui Shi; Wei-Yun Yau; Daniela Rus (IEEE Trans. Robotics, 2023)

A 24.6-29.6GHz Hybrid Sub-Sampling PLL with Tri-State Integral Path Achieving 44fs Jitter and -254.8dB FOM in 28nm CMOS. - Zhongkai Wang; Minsoo Choi 002; Paul Kwon; Zhaokai Liu; Bozhi Yin; Kyoungtae Lee; Kwanseo Park; Ayan Biswas; Jaeduk Han; Sijun Du; Elad Alon (ISCAS, 2024)

BAG3++: An Extensible Generator Framework for Automated Layout-Aware AMS Design. - Felicia Guo; Bob L. Zhou; Ayan Biswas; Paul Kwon; Zhaokai Liu; Ken Ho; Vladimir Stojanovic; Borivoje Nikolic (IEEE Open J. Circuits Syst., 2025)