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 007 (IEEE Access, 2024)