Mixed-signal Simulation of a Power Amplifier Predistortion Linearization System

Author

Woo, Wangmyong ; Kenney, J. Stevenson

Author_Institution

School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0250, USA, Tel: (404) 385-2303; wmwoo@ece.gatech.edu

Volume

40

fYear

2001

fDate

Nov. 2001

Firstpage

1

Lastpage

9

Abstract

This paper introduces a mixed-signal simulator for the RF power amplifier predistortion linearization. System-level simulation approaches are in demand for designing mixed-signal power amplifier systems and tight time-to-market requirements. A predistortion system using self-adjusting function provides both precise and stable distortion compensation performance. The system performs the linearization for a physical model of a power amplifier (PA) using the dynamic feedback of the difference signal between input and output envelops to adaptively compensate the gain and phase. The simulator was developed on the simulation environment in the HP Advanced Design System (HP ADS). The performance of the simulator is examined by a mixed-signal example. The presented performance illustrates potential applications for DSP implementation in the future wireless systems.

Keywords

Circuit simulation; Computational modeling; Computer simulation; Linearization techniques; Power amplifiers; Power engineering and energy; Power system modeling; Predistortion; Radiofrequency amplifiers; Table lookup;

fLanguage

English

Publisher

ieee

Conference_Titel

ARFTG Conference Digest-Fall, 58th

Conference_Location

San Diego, CA, USA

Print_ISBN

0-7803-5686-1

Type

conf

DOI

10.1109/ARFTG.2001.327489

Filename

4120192