The Alphasat-XL Antenna Feed Array

Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany

Proceedings: EuCAP 2009

Pages: 4Language: englishTyp: PDF

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Dallaire, J.; Senechal, G.; Richard, S. (MacDonald, Dettwiler and Associates Corporation Ltd, Montréal, Québec, Canada, H9X 3R2)

The next generation of mobile satellite communication systems requires a high degree of flexibility. Large multibeam antennas providing hundreds of beams are used to address this need. A large deployable reflector fed by a high performance feed array provides several technical advantages and has been selected for the Alphasat-XL program. This paper describes the Alphasat-XL primary feed array under development at MDA Corporation. The state-of-the-art high power feed design and its main performance characteristics are presented. The challenging PIM and multipactor requirements and the unique MDA design addressing them are also discussed.