Title :
A supply modulator with nested structure for wideband envelope tracking power amplifier
Author_Institution :
Nokia Siemens Networks, CTO Res., Beijing, China
Abstract :
In this paper, a novel supply modulator with nested structure for envelope tracking base-station power amplifier was presented, which boosts average modulator efficiency by realizing additional peak efficiency points both in linear amplifier & current source array. Tuneable peak efficiency points make a flexible efficiency adaptation for various wideband signal character besides efficiency boosting.
Keywords :
modulators; power amplifiers; wideband amplifiers; average modulator efficiency; current source array; envelope tracking base-station power amplifier; linear amplifier; nested structure; supply modulator; wideband envelope tracking power amplifier; Arrays; Modulation; Peak to average power ratio; Power amplifiers; Power generation; Wideband; DC-DC power converters; energy efficiency; peak to average power ratio; power amplifiers; power supplies; wideband;
Conference_Titel :
Power Amplifiers for Wireless and Radio Applications (PAWR), 2012 IEEE Topical Conference on
Conference_Location :
Santa Clara, CA
Print_ISBN :
978-1-4577-1119-0
DOI :
10.1109/PAWR.2012.6174939
