Title :
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
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;
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249809
