An Envelope Tracking Supply Modulator Utilizing a GaN-Based Integrated Four-Phase Switching Converter and Average Power Tracking-Based Switch Sizing With 85.7% Efficiency for 5G NR Power Amplifier.
Ya-Ting HsuZong-Yi LinJia-Jyun LeeKe-Horng ChenPublished in: IEEE J. Solid State Circuits (2021)