Application of an Envelope-Domain Time-Series Model of an RF Power Amplifier to the Development of a Digital Pre-Distorter System

Author

Wood, John ; Lefevre, Michael ; Runton, David

Author_Institution

RF Div., Freescale Semicond., Inc., Tempe, AZ

fYear

2006

fDate

11-16 June 2006

Firstpage

856

Lastpage

859

Abstract

A behavioral model of a 200W Doherty RF power amplifier has been created from digitally-modulated IQ signal information using an established nonlinear time series approach. The model operates in the envelope or digital signal domain and is implemented in Matlab so that it can be used directly in system-level simulators. The model has been validated using measured data. It has been used in a system-level design and simulation of digital pre-distorter systems, where the high fidelity of the model to the measured data and the rapid speed of simulation have enabled the system design

Keywords

UHF power amplifiers; circuit simulation; integrated circuit design; integrated circuit modelling; time series; 200 W; Doherty RF power amplifier; Matlab; digital pre distorter system; digital pre distorter systems; digital signal domain; digitally modulated IQ signal information; envelope domain time series model; nonlinear time series; system level simulators; Circuit simulation; High power amplifiers; Mathematical model; Power amplifiers; Power system modeling; RF signals; Radio frequency; Radiofrequency amplifiers; Semiconductor optical amplifiers; Signal design; modeling; nonlinear circuits; nonlinear systems; power amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2006. IEEE MTT-S International

Conference_Location

San Francisco, CA

ISSN

0149-645X

Print_ISBN

0-7803-9541-7

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2006.249809

Filename

4015044