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

fYear

2010

fDate

28-30 Sept. 2010

Firstpage

1022

Lastpage

1025

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2010 European

Conference_Location

Paris

Print_ISBN

978-1-4244-7232-1

Type

conf

Filename

5616487