A Compact Switchable Filtering Diplexer Based on Reused L-Shaped Resonator. - Xiaojun Bi 003; Qiang Ma 009; Chengxiao Ning; Qinfen Xu (IEEE Trans. Circuits Syst. II Express Briefs, 2018)

Design and Analysis of Multi-Band Filtering Circuits - Xiaojun Bi 003; Qiang Ma 009; Zilan Cao; Qinfen Xu (Springer, 2022)

High-Efficiency Class-B/F W-Band Balanced Frequency Sixtupler in GaN HEMT Technology. - Qiang Ma 009; Xiaojun Bi 003 (ICTA, 2023)

A Wideband Balun Filter Based on Folded Ring Slotline Resonator and Dual-Feedback Stubs With >17.8 f0 Stopband Rejection. - Shiming Guan; Xiaojun Bi 003; Qiang Ma 009; Qinfen Xu (IEEE Trans. Circuits Syst. II Express Briefs, 2023)

Dual-Band Power Divider With Wide Passbands and Wide Harmonic Suppression Utilizing Multi-Mode T-Stub Loaded Slotline Resonators. - Zhe Zhang; Xiaojun Bi 003; Qiang Ma 009; Andy Shen; Chang Wu; Tao Guo; Qinfen Xu (IEEE Trans. Circuits Syst. II Express Briefs, 2023)

A Class-C Eight-Phase Voltage-Controlled Oscillator With 184.2 dBc/Hz FoM and Loop-Based Superharmonic Coupling in 65-nm CMOS. - Qiang Ma 009; Xiaojun Bi 003; Qinfen Xu (IEEE Trans. Circuits Syst. II Express Briefs, 2024)