AM-AM and AM-PM distortion characterization of satellite transponders/base station transmitters using spectrum measurements

Author

Ghannouchi, Fadhel M. ; Ghazel, Adel

Author_Institution

Dept. of Electr. Eng., Montreal Univ., Que., Canada

fYear

2003

fDate

20-22 Nov. 2003

Firstpage

141

Lastpage

144

Abstract

This paper proposes a method for measuring AM-AM and AM-PM distortion of power amplifiers (PAs) of satellite transponders and base station transmitters using power spectrum measurements. It consists of using unequal three-tone signal to drive either the base station power amplifier´s transmitter or the satellite transponder´s power amplifier and to measure the level of these tones at the output of the transmitter/transponder. By comparison of the spectrum at the input and output of the PA, one can calculate the AM-AM compression factor and the AM-PM conversion coefficient of the power amplifier of the transmitter or transponder using close form expressions.

Keywords

amplitude modulation; distortion measurement; phase modulation; power amplifiers; power measurement; satellite links; transponders; AM-AM compression factor; AM-AM distortion; AM-PM conversion coefficient; AM-PM distortion; base station transmitter; power amplifier transmitter; power spectrum measurement; satellite transponder; Base stations; Distortion measurement; Linearity; Nonlinear distortion; Power amplifiers; Power measurement; Radio transmitters; Radiofrequency amplifiers; Satellite broadcasting; Transponders;

fLanguage

English

Publisher

ieee

Conference_Titel

Recent Advances in Space Technologies, 2003. RAST '03. International Conference on. Proceedings of

Conference_Location

Istanbul, Turkey

Print_ISBN

0-7803-8142-4

Type

conf

DOI

10.1109/RAST.2003.1303897

Filename

1303897