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A High-Efficiency Envelope-Tracking Supply Modulator Using a Class-G Linear Ampl
提出一种用于5G NR功率放大器的高效包络跟踪电源调制器，结合Class-G线性放大器和SIDIDO转换器技术。
65nm CMOS, 1-5V输出摆幅, 200MHz跟踪带宽, 83.4%峰值效率
包络跟踪Class-G线性放大器SIDIDO转换器5G NR电源调制器
▸采用Class-G线性放大器实时检测输入信号幅度并自适应切换电源轨
▸引入平滑过渡技术减少高速切换引起的失真
▸使用SIDIDO转换器高效生成线性放大器的电源轨
Abstract
This article presents a hybrid envelope tracking
supply modulator (ETSM) comprising a class-G linear amplifier
(LA), a single-inductor dual-input-dual-output (SIDIDO) con-
verter and a switching amplifier (SA) for 5G new radio (NR)
power amplifiers (PAs). With an additional supply rail, the
class-G LA detects the amplitude of the input signal in real-
time, adaptively utilizes the higher supply rail when the signal
exhibits large swings, and seamlessly transitions to the lower
supply rail when t