Title :
Analogue adaptive feedback lineariser
Author :
Bertran, Eduard ; Berenguer, Jordi
Author_Institution :
Dept. of Signal Theor. & Commun., Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
A solid-state power amplifier (SSPA) linearisation technique based on the analogue implementation of the LMS algorithm is here presented. This technique leads to a linearisation scheme next to a hyperstable adaptive system, thus being suitable for the compensation of SSPA parameter variations. The lineariser is experimented on a class-A power amplifier backed-off by 3 dB.
Keywords :
UHF power amplifiers; circuit feedback; least mean squares methods; linearisation techniques; microwave integrated circuits; microwave power amplifiers; SSPA parameter variations compensation; analogue LMS algorithm implementation; analogue adaptive feedback lineariser; class-A power amplifier; hyperstable adaptive system; linearisation scheme; solid-state power amplifier linearisation technique; Adaptive control; Adaptive systems; Feedback circuits; Feedback loop; Least squares approximation; OFDM modulation; Power amplifiers; Programmable control; Signal processing algorithms; Transversal filters;
Conference_Titel :
Microwave Conference, 2003. 33rd European
Print_ISBN :
1-58053-834-7
DOI :
10.1109/EUMC.2003.1262265
