Flexible S-band SSPA for Space Application

Author

Darbandi, A. ; Zoyo, M. ; Touchais, J.Y. ; Butel, Y.

Author_Institution

Thales Alenia Space, Toulouse

fYear

2008

fDate

22-25 June 2008

Firstpage

70

Lastpage

76

Abstract

This paper presents a new methodology for reducing power consumption of power amplifiers from low level to high level RF power with minimal amplitude and phase variations. The study also highlights the important design considerations to achieve a good efficiency and excellent amplitude and phase tracking among the SSPAs.Using this methodology a flexible S band SSPA has been designed for the new generation of a mobile telecommunications satellite system.The SSPA provides 20 W output power in the multicarrier excitation signal with noise power ratio (NPR) higher than 15 dB and DC to RF efficiency greater than 35%. The DC power saving for 11 dB of output power back-off is more than 60% compared to a classical one.

Keywords

microwave amplifiers; millimetre wave amplifiers; mobile satellite communication; power consumption; DC power saving; amplitude-phase tracking; amplitude-phase variations; flexible S-band SSPA; high level RF power; mobile telecommunications satellite system; multicarrier excitation signal; noise power ratio; power 20 W; power amplifiers; power consumption reduction; space application; Artificial satellites; DC generators; Energy consumption; High power amplifiers; Power generation; RF signals; Radio frequency; Radiofrequency amplifiers; Signal design; Signal generators; High efficiency; NPR; S-band; SSPA; amplifier; flexible; highly linear; satellite;

fLanguage

English

Publisher

ieee

Conference_Titel

Adaptive Hardware and Systems, 2008. AHS '08. NASA/ESA Conference on

Conference_Location

Noordwijk

Print_ISBN

978-0-7695-3166-3

Type

conf

DOI

10.1109/AHS.2008.47

Filename

4584257