A Filtering Balun Utilizing Multi-Ring Loaded Vertical Transition Structure With 161% Fractional Bandwidth and >5.8f₀ Stopband. - Zhaoming Feng; Xiaojun Bi 003; Zilan Cao; Andy Shen; Qichao Ding; Qinfen Xu (IEEE Trans. Circuits Syst. II Express Briefs, 2022)

Strong Nonlinear Capacitive Behavior of a GaN/AlN Varactor Based on Dual-Schottky Junctions With a Cutoff Frequency of 1.5 THz. - Yuhuan Jiang; Tao Guo; Kai Wang; Jielong Liu; Chengcheng Li; Qi He; Qichao Ding; Chang Wu (IEEE Access, 2024)