Title :
Adaptive predistortion with reduced feedback complexity [RF power amplifiers]
Author :
Mansell, A.R. ; Bateman, A.
Author_Institution :
Centre for Commun. Res., Bristol Univ., UK
fDate :
6/20/1996 12:00:00 AM
Abstract :
A technique for the adaption of a complex-gain baseband predistorter is proposed, using only a single coherent downconversion in the feedback path. Despite this reduction in complexity when compared to previous implementations, the adaption process can still correct for both AM/AM and AM/PM nonlinearities in the RF power amplifier. Practical results from a 220 MHz transmitter are given
Keywords :
adaptive signal processing; electric distortion; feedback amplifiers; linearisation techniques; power amplifiers; radiofrequency amplifiers; 220 MHz; AM/AM nonlinearities; AM/PM nonlinearities; RF power amplifier; VHF transmitter; adaptive predistortion; coherent downconversion; complex-gain baseband predistorter; reduced feedback complexity;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960785
