High accuracy wide band analog predistortion linearizer for Telecom satellite transmit section

Author

Villemazet, Jean-Francois ; Yahi, Hissa ; Lopez, David ; Perrel, Michel ; Maynard, Jean ; Cazaux, Jean-Louis

Author_Institution

Thales Alenia Space France, Toulouse, France

fYear

2010

fDate

23-28 May 2010

Firstpage

660

Lastpage

663

Abstract

This paper proposes a new predistortion linearizer module for TWTA allowing to reach high linearity performance on a wide frequency bandwidth for Telecom satellite transmit section. This linearizer module includes a new advanced shape tuning capability associated with an embedded limiting function. A C/I3 improvement of more than 16dB at -7dB IBO per carrier and a NPR increase of 5dB at -3dB OBO were for instance obtained thanks to this new linearizer architecture on the overall 10.7 - 12.75GHz Ku-band (2.05GHz bandwidth). NPR performance is now very close to the optimal theoretical response of the “ideal limiter”.

Keywords

satellite communication; transponders; travelling wave amplifiers; TWTA; frequency 10.7 GHz to 12.75 GHz; shape tuning; telecom satellite transmit section; wide band analog predistortion linearizer; wide frequency bandwidth; Artificial satellites; Frequency; Linearity; Microwave amplifiers; Power amplifiers; Power generation; Predistortion; Radiofrequency amplifiers; Telecommunications; Wideband; Active circuit; Schottky diodes; amplifier distortion; microwave circuits; nonlinear distortion; power amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International

Conference_Location

Anaheim, CA

ISSN

0149-645X

Print_ISBN

978-1-4244-6056-4

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2010.5517993

Filename

5517993