A 0.6V Fully-Integrated BLE Transmitter in 65nm CMOS Using a Common-Mode-Ripple-Cancelled Hybrid PLL and a Duty-Cycle-Controlled Class-E/F2 PA Achieving 25% System Efficiency at 0dBm. - Liqun Feng; Qianxian Liao; Longhao Kuang; Jiahao Zhao; Woogeun Rhee; Zhihua Wang (A-SSCC, 2024)

A 3.4 mW ± 0.45 dB-Gain-Variation 6-10GHz Low-Noise Amplifier with Embedded Capacitive Feedback and RC Extension Network for Gb/s UWB Receivers. - Longhao Kuang; Woogeun Rhee; Zhihua Wang 001 (ICTA, 2024)

14.7 A 0.45V 0.72mW 2.4GHz Bias-Current-Free Fractional-N Hybrid PLL Using a Voltage-Mode Phase Interpolator in 28nm CMOS. - Liqun Feng; Xuansheng Ji; Longhao Kuang; Qianxian Liao; Su Han; Jiahao Zhao; Woogeun Rhee; Zhihua Wang 001 (ISSCC, 2024)

A 0.5V 0.55mm2 Bias-Current-Free BLE Transceiver with 1-Bit Delay-Based Demodulation for Energy-Harvesting IoT applications. - Liqun Feng; Xuansheng Ji; Qianxian Liao; Longhao Kuang; Yunzhao Nie; Jiahao Zhao; Woogeun Rhee; Zhihua Wang 001 (CICC, 2025)

A 1.8Gb/s 8GHz PSK-UWB Transceiver with Extended PPM/PWM Modulation and Embedded Carrier Spreading. - Luhua Lin; Bowen Wang; Longhao Kuang; Woogeun Rhee; Zhihua Wang (CICC, 2025)

An Ultra-Low-Voltage Bias-Current-Free Fractional-N Hybrid PLL With Voltage-Mode Phase Detection and Interpolation. - Liqun Feng; Xuansheng Ji; Longhao Kuang; Qianxian Liao; Su Han; Jiahao Zhao; Woogeun Rhee; Zhihua Wang 001 (IEEE J. Solid State Circuits, 2025)