An 80% peak efficiency, 410mW, single supply rail powered Class-I linear audio amplifier. - Zhenfei Peng; Shanshan Yang; Yong Feng; Zhiliang Hong; Bill Liu (CICC, 2011)

An All-Digital Gigahertz Class-S Transmitter in a 65-nm CMOS. - Yang Zhao 013; Yilei Shen; Pan Xue; Zhiwei Ma; Zhenfei Peng; Bao-Xing Chen; Zhiliang Hong (IEEE Trans. Very Large Scale Integr. Syst., 2016)