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

Author

Hassan, Mehdi ; Asbeck, P.M. ; Larson, Lawrence E.

Author_Institution

Univ. of California, San Diego, La Jolla, CA, USA

fYear

2013

Firstpage

366

Lastpage

367

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.

Keywords

CMOS integrated circuits; Long Term Evolution; modulators; power amplifiers; power supply circuits; CMOS dual-switching power-supply modulator; LTE envelope tracking RF power amplifier; PAPR signal; communication system; efficiency improvement; envelope bandwidth expansion; frequency 20 MHz; linear RF power amplifier; peak-to-average power ratio signal; power supply modulator; watt-level power requirement; Bandwidth; Inductors; Modulation; Power amplifiers; Radio frequency; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2013 IEEE International

Conference_Location

San Francisco, CA

ISSN

0193-6530

Print_ISBN

978-1-4673-4515-6

Type

conf

DOI

10.1109/ISSCC.2013.6487772

Filename

6487772