Outphasing transmitters, enabling digital-like amplifier operation with high efficiency and spectral purity

Author

de Vreede, Leo C. N. ; Acar, Mustafa ; Calvillo-Cortes, David A. ; van der Heijden, Mark P. ; Wesson, Rosbin ; de Langen, Michel ; Qureshi, Jawad

Volume

53

Issue

4

fYear

2015

fDate

Apr-15

Firstpage

216

Lastpage

225

Abstract

An overview of outphasing transmitters is given. Starting from its basic principles, we discuss its advantages and drawbacks compared to other high-efficiency amplifier configurations. Next, innovations in outphasing architecture, design, and implementation are given that overcome the difficulties related to the traditional outphasing configuration. Using the latest insights in drive schemes for input signals and quasi load-insensitive class-E output matching, very compact high-power high-performance digital- like transmitters are enabled that offer high efficiency and high spectral purity while being reconfigurable in their operating frequency.

Keywords

radio transmitters; radiofrequency amplifiers; spectral analysis; digital-like amplifier operation; outphasing transmitter; quasiload-insensitive class-E output matching; spectral purity; Bandwidth allocation; Energy efficiency; Power amplifiers; Power generation; Switches; Transmitters;

fLanguage

English

Journal_Title

Communications Magazine, IEEE

Publisher

ieee

ISSN

0163-6804

Type

jour

DOI

10.1109/MCOM.2015.7081097

Filename

7081097