A Single Switcher Combined Series Parallel Hybrid Envelope Tracking Amplifier for Wideband RF Power Amplifier Applications.

IEEE International Symposium on Circuits and Systems proceedings. IEEE International Symposium on Circuits and Systems Pub Date : 2016-05-01 Epub Date: 2016-08-11 DOI:10.1109/ISCAS.2016.7539060

Nijad Anabtawi, Rony Ferzli, Haidar M Harmanani

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引用次数: 1

Abstract

In this paper, an improved architecture for RF power amplifier envelope tracking supply modulator is presented. It consists of a single switched mode supply regulator and one linear regulator. The switched mode supply regulator has two outputs, one of which is used in conjunction with the linear regulator to provide a wideband, high efficiency power supply to the RF amplifier, whereas the second output provides a band limited high efficiency supply to the linear regulator. The design offers improved power efficiency, reduced system complexity and area savings since the dual output switched mode regulator requires one inductor and a simple control loop. The design was implemented in 14nm CMOS process and validated with simulations. The supply modulator achieves a peak efficiency of 74% with a 6 dB PAPR 20MHz LTE signal at 29dBm output power.

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用于宽带射频功率放大器的单开关组合串并联混合包络跟踪放大器。

提出了一种改进的射频功率放大器包络跟踪电源调制器结构。它由一个开关电源调节器和一个线性调节器组成。开关模式电源稳压器具有两个输出，其中一个与线性稳压器结合使用，为射频放大器提供宽带、高效率的电源，而第二个输出则为线性稳压器提供带限制的高效率电源。由于双输出开关模式调节器需要一个电感和一个简单的控制回路，因此该设计提供了更高的功率效率，降低了系统复杂性并节省了面积。该设计在14nm CMOS工艺上实现，并通过仿真验证。该电源调制器在输出功率为29dBm的6db PAPR 20MHz LTE信号下实现74%的峰值效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE International Symposium on Circuits and Systems proceedings. IEEE International Symposium on Circuits and Systems

CiteScore

2.00

自引率

0.00%

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