Locking Range Maximization in Injection-Locked Class-E Oscillator - A Case Study for Optimizing Synchronizability. - Yoji Yabe; Hisa-Aki Tanaka; Hiroo Sekiya; Masaki Nakagawa; Fumito Mori; Kensuke Utsunomiya; Akira Keida (IEEE Trans. Circuits Syst. I Fundam. Theory Appl., 2020)