A CMOS dual-switching power-supply modulator with 8% efficiency improvement for 20MHz LTE Envelope Tracking RF power amplifiers

2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers Pub Date : 2013-03-28 DOI:10.1109/ISSCC.2013.6487772
Muhammad Hassan, P. Asbeck, L. Larson
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引用次数: 63

Abstract

Envelope Tracking (ET) is an efficiency enhancement technique where the power supply of a linear RF power amplifier (PA) follows the envelope of the RF signal. It is specifically effective for the high peak-to-average power ratio (PAPR) signals of modern communication systems. But due to envelope bandwidth expansion and watt-level power requirements, the design of wide bandwidth and high efficiency power supply modulators remains one of the most challenging aspects of ET systems.
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用于20MHz LTE包络跟踪射频功率放大器的CMOS双开关电源调制器，效率提高8%
包络跟踪(ET)是一种提高效率的技术，其中线性射频功率放大器(PA)的电源遵循射频信号的包络。它对现代通信系统的高峰均功率比(PAPR)信号特别有效。但由于包络带宽扩展和瓦特级功率要求，宽带宽和高效率电源调制器的设计仍然是ET系统最具挑战性的方面之一。
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2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers
2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers
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