A 2.5-W 40-MHz-bandwidth hybrid supply modulator with 91% peak efficiency, 3-V output swing, and 4-mV output ripple at 3.6-V supply

• Main Authors: He, Huiqiao, Kang, Yang, Ge, Tong, Guo, Linfei, Chang, Joseph Sylvester
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2020
• Subjects: Engineering::Electrical and electronic engineering; CMOS Analog Integrated Circuits; Communication System Power Supplies
• Online Access: https://hdl.handle.net/10356/141602
• Institution: Nanyang Technological University

We describe a supply modulator comprising a proposed delay-based hysteresis controller, proposed wideband class-AB amplifier, and class-D amplifier for an envelope tracking (ET) power amplifier (PA). We investigate the power dissipation and optimization method of the supply modulator for wideband ap...