Predistortion linearization system for high power amplifiers

Author

Woo, Wangnyong ; Miller, Marvin ; Kenney, J. Stevenson

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., USA

Volume

2

fYear

2004

fDate

6-11 June 2004

Firstpage

677

Abstract

This paper presents an adaptive wideband, digitally controlled RF envelope predistortion linearization system for high power amplifiers. The advantages of this predistortion architecture over conventional baseband digital approaches are that a 20∼33% wider correction bandwidth is achievable at the same clock speeds, and it can perform linearization without the need for a digital baseband input signal. Using 3-carrier CDMAOne and wideband multi-tone signals, the linearization performances for a 90W PEP LDMOS PA and a 680W PEP LDMOS PA were examined.

Keywords

code division multiple access; digital control; digital signals; linearisation techniques; nonlinear distortion; power amplifiers; 3-carrier CDMA; 3-carrier code division multiple access; 680 W; 90 W; LDMOS power amplifier; baseband digital approach; clock speed; correction bandwidth; digitally controlled RF envelope; high power amplifiers; lateral double-diffused metal oxide semiconductor power amplifier; predistortion linearization system; wideband multi-tone signals; Adaptive control; Bandwidth; Baseband; Clocks; Control systems; Digital control; High power amplifiers; Predistortion; Programmable control; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2004 IEEE MTT-S International

ISSN

0149-645X

Print_ISBN

0-7803-8331-1

Type

conf

DOI

10.1109/MWSYM.2004.1336079

Filename

1336079