A 0.8V/0.6V 2.2μW Time-Domain Analog Front-End with $540 text{mV}_{ text{pp}}$ Input Range, 81.6dB SNDR and $80 mathrm{M} Omega$ Input Impedance. - Liheng Liu; Tianxiang Qu; Pengjie Wang 004; Yao Zhang; Zhiliang Hong; Jiawei Xu 001 (CICC, 2022)

A 1.8GΩ-Input-Impedance 0.15µV-Input-Referred-Ripple Chopper Amplifier with Local Positive Feedback and SAR-Assisted Ripple Reduction. - Tianxiang Qu; Qinjing Pan; Xiaoyang Zeng; Zhiliang Hong; Jiawei Xu 001 (CICC, 2022)

A 136GΩ-Input-Impedance Active Electrode for Non-Contact ECG Using Auto-Calibrated Positive Feedback and Capacitance Scaling in Femtofarad Resolution. - Peizhuo Wang; Tianxiang Qu; Liangbo Lei; Zhiliang Hong; Jiawei Xu 001 (ESSCIRC, 2022)

A 0.5mΩ/√Hz 106dB SNR 0.45cm2 Dry-Electrode Bioimpedance Interface with Current Mismatch Cancellation and Boosted Input Impedance of 100MΩ at 50kHz. - Qinjing Pan; Tianxiang Qu; Biao Tang; Fei Shan; Zhiliang Hong; Jiawei Xu 001 (ISSCC, 2022)

Integrated Self-Interference Suppression for Single Antenna Full-Duplex without Circulator. - Yongqian Du; Jiahao Chen; Guifang Li; Kai Han; Tianxiang Qu; Shibin Liu (NEWCAS, 2022)

A 7.5GΩ-Input-Impedance 109dB-Total-CMRR and 80VPP-CMI-Tolerance Instrumentation Amplifier for Dry-Contact Two-Electrode ECG Monitoring. - Tianxiang Qu; Qinjing Pan; Biao Tang; Zhiliang Hong; Jiawei Xu 001 (BioCAS, 2023)

A 3.5MHz-BW 128nTrms Resolution TMR Readout Using Ping-Pong Auto-Zeroing and SAR-Assisted Offset Calibration for Contactless Current Sensing. - Tian Dong; Tianxiang Qu; Wenhui Qin; Yaohua Pan; Yun Sheng; Zhiliang Hong; Jiawei Xu 001 (ESSCIRC, 2023)

A 1.9μVrms 7.7ppm/°C ADC Reference with 20mA Output Current and Single-Trim Inaccuracy of ±0.03%(3σ) from -40°C to 125°C. - Hongyu Tian; Tianxiang Qu; Ting Yi; Zhiliang Hong; Jiawei Xu 001 (ESSCIRC, 2023)

A 0.5-mΩ/√Hz Dry-Electrode Bioimpedance Interface With Current Mismatch Cancellation and Input Impedance of 100 MΩ at 50 kHz. - Qinjing Pan; Tianxiang Qu; Biao Tang; Fei Shan; Zhiliang Hong; Jiawei Xu 001 (IEEE J. Solid State Circuits, 2023)

A 1.8-GΩ Input-Impedance 0.15-μV Input-Referred-Ripple Chopper Amplifier With Local Positive Feedback and SAR-Assisted Ripple Reduction. - Tianxiang Qu; Qinjing Pan; Liheng Liu; Xiaoyang Zeng; Zhiliang Hong; Jiawei Xu 001 (IEEE J. Solid State Circuits, 2023)

A 1kHz-to-62MHz 2.06zFrms Resolution Lock-in Amplifier with SAR-assisted Parasitic and Baseline Capacitance Compensation. - Minge Jiang; Shen Ye; Tianxiang Qu; Tian Dong; Qinjing Pan; Zhiliang Hong; Jiawei Xu 001 (A-SSCC, 2024)

A 97.3dB SNR Bioimpedance AFE with -84dB THD Segmented-ΔΣM Sinusoidal Current Generator and Passing-Through Instrumentation Amplifier. - Qinjing Pan; Qi Luo; Tianxiang Qu; Liheng Liu; Xiao Li; Min Chen; Zhiliang Hong; Jiawei Xu 001 (VLSI Technology and Circuits, 2024)

A 136-GΩ Input-Impedance Active Electrode for Non-Contact Biopotential Signals Monitoring. - Tianxiang Qu; Peizhuo Wang; Liangbo Lei; Zhiliang Hong; Jiawei Xu 001 (IEEE J. Solid State Circuits, 2024)

A 2.2μW PWM-Based Time-Domain Sensor Interface With 540mVpp Input Signal Range, 81.6dB SNDR and 80MΩ Input Impedance. - Liheng Liu; Tianxiang Qu; Pengjie Wang 004; Yao Zhang; Shunmin Wu; Zhiliang Hong; Jiawei Xu 001 (IEEE Trans. Circuits Syst. II Express Briefs, 2024)

An IoT-Enabled Wearable Health Monitor for Synchronized ExG, PPG, and BioZ Measurement. - Hao Li 084; Tianxiang Qu; Liheng Liu; Yuying Li; Zhiliang Hong; Jiawei Xu 001 (IEEE Trans. Instrum. Meas., 2025)

A 97.3-dB SNR Bioimpedance AFE With -84-dB THD Segmented- ΔΣ M Sinusoidal Current Generator and Passing-Through Instrumentation Amplifier. - Qinjing Pan; Qi Luo; Tianxiang Qu; Liheng Liu; Xiao Li; Min Chen; Zhiliang Hong; Jiawei Xu 001 (IEEE J. Solid State Circuits, 2025)

A 2 MHz Bandwidth TMR-Based Contactless Current Sensor With Ping-Pong Auto-Zeroing and SAR-Assisted Offset Calibration. - Tianxiang Qu; Tian Dong; Wenhui Qin; Yaohua Pan; Yun Sheng; Zhiliang Hong; Xiaoyang Zeng; Jiawei Xu 001 (IEEE J. Solid State Circuits, 2025)