Analog predistortion linearizer for high power rf amplifier

Author

Jaehyok Yi ; Youngoo Yang ; Myungkyu Park ; Wonwoo Kang ; Bumman Kim

Author_Institution

Dept. of Electron. & Electr. Eng., Pohang Inst. of Sci. & Technol., South Korea

Volume

3

fYear

2000

fDate

11-16 June 2000

Firstpage

1511

Abstract

Analog predistortion linearizer for the high power amplifier of CDMA base station has been developed. To suppress the spectral regrowth in the adjacent channel effectively, the odd order intermodulation distortions should be cancelled. For the purpose, the predistorter, which can cancel the 3rd and 5th intermodulation distortions independently, has been employed. The implemented pre-distorter linearized the RF amplifier with average power 45 dBm at 2.37-2.4 GHz band. 9 dB suppression of spectral regrowth was achieved for CDMA signal over 30 MHz bandwidth.

Keywords

UHF power amplifiers; code division multiple access; intermodulation distortion; linearisation techniques; 2.37 to 2.4 GHz; CDMA base station; analog predistortion linearizer; high power RF amplifier; intermodulation distortion; spectral regrowth; Bandwidth; Base stations; Circuits; Distortion measurement; High power amplifiers; Intermodulation distortion; Multiaccess communication; Phase measurement; Predistortion; Radiofrequency amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest. 2000 IEEE MTT-S International

Conference_Location

Boston, MA, USA

ISSN

0149-645X

Print_ISBN

0-7803-5687-X

Type

conf

DOI

10.1109/MWSYM.2000.862262

Filename

862262