Multispectrum Signal Transmitters: Advances in Broadband High-Efficiency Power Amplifiers for Carrier Aggregated Signals

Author

Boumaiza, Slim ; Golestaneh, Hamed ; Abadi, Mehdi Naseri Ali

Author_Institution

Univ. of Waterloo, Waterloo, ON, Canada

Volume

15

Issue

7

fYear

2014

fDate

Nov.-Dec. 2014

Abstract

This article described recent advances in Doherty power amplifiers (DPAs) with extended bandwidth for use in future radio transmitters intended to support carrier aggregation signal transmission. It provided a review of several configurations of two-way (using symmetrical and asymmetrical drain supply voltages) and three-way DPAs. Furthermore, it identified various approaches to ensure proper load modulation over extended bandwidth by incorporating novel combining networks. It also discussed the additional challenges associated with the linearizability of DPAs when driven with interband aggregated signals.

Keywords

modulation; power amplifiers; radio transmitters; asymmetrical drain supply voltage; broadband high efficiency power amplifier; carrier aggregated signals; carrier aggregation signal transmission; load modulation; multispectrum signal transmitter; radio transmitters; three-way Doherty power amplifier; two-way Doherty power amplifier; Broadband amplifiers; Mobile communication; Modulation; Power amplifiers; Radio transmitters;

fLanguage

English

Journal_Title

Microwave Magazine, IEEE

Publisher

ieee

ISSN

1527-3342

Type

jour

DOI

10.1109/MMM.2014.2356150

Filename

6954643