Qinfen Xu

19 papers Journal 17Unranked 1
YearRankTypeTitle / Venue / Authors
2025 J jnl
A Linear High-Efficiency Distributed Power Amplifier Utilizing Class-AB and Inverse-Class-C Complementary Structure.
IEEE Trans. Circuits Syst. I Regul. Pap.
Chaodi Sheng, Xiaojun Bi, Qinfen Xu
2024 J jnl
A Class-C Eight-Phase Voltage-Controlled Oscillator With 184.2 dBc/Hz FoM and Loop-Based Superharmonic Coupling in 65-nm CMOS.
IEEE Trans. Circuits Syst. II Express Briefs
Qiang Ma, Xiaojun Bi, Qinfen Xu
2024 J jnl
Compact Tunable Reflectionless Phase Shifter With Wide Bandwidth and Low Phase Deviation.
IEEE Trans. Circuits Syst. II Express Briefs
Zilan Cao, Xiaojun Bi, Andy Shen, Chang Wu, Zhen Huang, Tao Guo, Qinfen Xu
2023 J jnl
A Continuously-Tunable Optoelectronic Oscillator With Full Locking Range Utilizing Three Frequency Tuning Mechanisms.
IEEE Trans. Circuits Syst. I Regul. Pap.
Jingyu Weng, Xiaojun Bi, Zilan Cao, Xiaohong Wang, Qinfen Xu
2023 J jnl
A Wideband Balun Filter Based on Folded Ring Slotline Resonator and Dual-Feedback Stubs With >17.8 f
IEEE Trans. Circuits Syst. II Express Briefs
Shiming Guan, Xiaojun Bi, Qiang Ma, Qinfen Xu
2023 J jnl
Automatic Power Control for a Frequency Tunable Optoelectronic Oscillator.
IEEE Trans. Circuits Syst. II Express Briefs
Yufan Mei, Xiaojun Bi, Zilan Cao, Jingyu Weng, Xiaoguang Guo, Qinfen Xu
2023 J jnl
Dual-Band Power Divider With Wide Passbands and Wide Harmonic Suppression Utilizing Multi-Mode T-Stub Loaded Slotline Resonators.
IEEE Trans. Circuits Syst. II Express Briefs
Zhe Zhang, Xiaojun Bi, Qiang Ma, Andy Shen, Chang Wu, Tao Guo, Qinfen Xu
2022 J jnl
A Filtering Balun Utilizing Multi-Ring Loaded Vertical Transition Structure With 161% Fractional Bandwidth and >5.8f₀ Stopband.
IEEE Trans. Circuits Syst. II Express Briefs
Zhaoming Feng, Xiaojun Bi, Zilan Cao, Andy Shen, Qichao Ding, Qinfen Xu
2022 J jnl
A Wideband Functionality-Reconfigurable RF Building-Block With Four Operating Modes.
IEEE Trans. Circuits Syst. II Express Briefs
Zhaoming Feng, Xiaojun Bi, Qinfen Xu
2022 — book
Design and Analysis of Multi-Band Filtering Circuits
Xiaojun Bi, Qiang Ma, Zilan Cao, Qinfen Xu
2021 J jnl
An Interstage-Reflectionless V-Band Radiometer With Capacitor-Reused Absorptive Matching in 0.13-μm SiGe BiCMOS.
IEEE Trans. Circuits Syst. I Regul. Pap.
Xiaojun Bi, Zilan Cao, Zhaoming Feng, Chaodi Sheng, Qinfen Xu
2021 J jnl
Tunable Reflectionless Filter With Independently Controllable Dual Passbands and Absorbed Harmonic Signals.
IEEE Trans. Circuits Syst. II Express Briefs
Zilan Cao, Xiaojun Bi, Qinfen Xu
2020 J jnl
High Selectivity Dual-Wideband Balun Filter Utilizing a Multimode T-line Loaded Middle-Shorted CSRR.
IEEE Trans. Circuits Syst.
Xing Zeng, Xiaojun Bi, Zilan Cao, Ruichen Wan, Qinfen Xu
2020 J jnl
High Sensitivity and Dynamic-Range 25 Gbaud Silicon Receiver Chipset With Current-Controlled DC Adjustment Path and Cube-Shape Ge-on-Si PD.
IEEE Trans. Circuits Syst.
Xiaojun Bi, Jian Li, Zhen Gu, Bo Tang, Chaodi Sheng, Yan Yang, Qinfen Xu
2020 J jnl
Octo-Band Bandpass Filter Based on Unequal-Width Cruciform Connected Resonator With Sharp Skirt.
IEEE Trans. Circuits Syst. II Express Briefs
Luhua Wang, Xiaojun Bi, Qinfen Xu
2020 J jnl
Slotline-Based Balanced Filter With Ultra-Wide Stopband and High Selectivity.
IEEE Trans. Circuits Syst. II Express Briefs
Xiaojun Bi, Xing Zeng, Qinfen Xu
2019 J jnl
Analysis and Design of Ultra-Large Dynamic Range CMOS Transimpedance Amplifier With Automatically-Controlled Multi-Current-Bleeding Paths.
IEEE Trans. Circuits Syst. I Regul. Pap.
Xiaojun Bi, Zhen Gu, Qinfen Xu
2019 — conf
Compact Reflectionless Dual-band BPF by Reused Quad-Mode Resonator.
ComComAP
Zilan Cao, Xiaojun Bi, Qinfen Xu
2018 J jnl
A Compact Switchable Filtering Diplexer Based on Reused L-Shaped Resonator.
IEEE Trans. Circuits Syst. II Express Briefs
Xiaojun Bi, Qiang Ma, Chengxiao Ning, Qinfen Xu