A 0.7-2.5GHz NB-loT/GNSS/BLE Hybrid PLL with PA Pulling Mitigation and Out-of-Band Phase Noise Reduction. - Jiahao Zhao; Xuansheng Ji; Su Han; Ziwei Wang; Woogeun Rhee; Zhihua Wang 001 (ICTA, 2022)

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)

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)

A Polar Phase-Tracking Receiver With Two-Point Injection Technique. - Xuansheng Ji; Jiahao Zhao; Woogeun Rhee; Zhihua Wang 001 (IEEE J. Solid State Circuits, 2025)