Abstract:
This article proposes an envelope-tracking (ET) supply modulator (SM) that is scalable for sixth-generation (6G) communication systems. The design leverages a cost-efficient CMOS process for the power converters and a high-performance GaN process for the high-frequency power amplifier (PA) and the depletion-mode-only GaN-based amplifier. The proposed ET supply modulator (ETSM) …