Title :
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
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 Pout 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;
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
DOI :
10.1109/ICCCAS.2006.285178
