Optimum Design of the Adaptive Predistortion Power Amplifier For WCDMA RF Subsystem

Author

Changyuan, Liu ; Hongchuan, Deng ; Jingfu, Bao ; XiaoBo, Yang

Author_Institution

Inst. of Electron. Syst. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu

Volume

4

fYear

2006

fDate

25-28 June 2006

Firstpage

2482

Lastpage

2484

Abstract

In this paper, an adaptive predistortion RF power amplifier for repeater subsystem is introduced. With an optimum gate bias voltage of the power amplifier, ACPRs of 12 and 13.5 dB are improved for the cases of the upper and lower channels. It delivers a P_out of 33 dBm with an ACPR of -50 dBc in the implementation. The characteristic of the adaptive predistortion RF power amplifier with two loops performed excellent under various conditions, such as vary input power levels, temperature, and operating frequency channels

Keywords

code division multiple access; distortion; power amplifiers; radiofrequency amplifiers; repeaters; WCDMA system; adaptive predistortion RF power amplifier; gate bias voltage; repeater subsystem; wideband code division multiple access; Design engineering; High power amplifiers; Linearity; Multiaccess communication; Power amplifiers; Power engineering and energy; Predistortion; RF signals; Radio frequency; Radiofrequency amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems Proceedings, 2006 International Conference on

Conference_Location

Guilin

Print_ISBN

0-7803-9584-0

Electronic_ISBN

0-7803-9585-9

Type

conf

DOI

10.1109/ICCCAS.2006.285178

Filename

4064425