An Efficiency-Enhanced Hybrid Supply Modulator With Single-Capacitor Current-Integration Control.

This paper presents a high-efficiency wideband hybrid supply modulator (HSM). We show that proper control of the average current from the class-AB linear amplifier (LA) and proper selection of the inductor value are essential to efficiency optimization. In line with the above criteria, a single-capacitor current-integration (SCCI) control method is proposed. Current integration is achieved by usin...