Title :
Generic Pre-distortion of a Class-J power amplifier
Author :
Bensmida, S. ; Morris, K. ; Akmal, M. ; Lees, J. ; Wright, P. ; Benedikt, J. ; Tasker, P. ; McGeehan, J. ; Beach, M.
Author_Institution :
Centre for Commun. Res., Univ. of Bristol, Bristol, UK
Abstract :
An improved “generic” pre-distortion method is tested and successfully demonstrated on the recently introduced Class-J power amplifier (PA) architecture. This linearization method is based on AM-AM and AM-PM measurements in the presence of a narrowband multi-tone signal in order to extract the PA static nonlinearities. Two independent measurement systems have been used to verify the assumption on which the generic linearization method relies. The use of a modulated, time-domain waveform measurement system in the presence of multi-tones signals has allowed unique investigations into the Class-J PA linearity.
Keywords :
amplitude modulation; linearisation techniques; power amplifiers; pulse modulation; time-domain analysis; waveform analysis; AM-AM measurements; AM-PM measurements; Class-J power amplifier architecture; PA static nonlinearity; class-J power amplifier; generic linearization method; generic predistortion method; independent measurement systems; narrowband multitone signal; time-domain waveform measurement system;
Conference_Titel :
Microwave Conference (EuMC), 2010 European
Conference_Location :
Paris
Print_ISBN :
978-1-4244-7232-1
