Earth deck antenna providing coverage flexibility

Author

Schreider, Ludovic ; Chiniard, Renaud ; Depeyre, Serge ; Brossier, Jérôme

Author_Institution

Space Antenna Dept., Thales Alenia Space, Toulouse, France

fYear

2012

fDate

25-28 June 2012

Firstpage

1

Lastpage

4

Abstract

Most of Ku-band telecommunications satellites currently in orbit provide a fixed coverage. Enhancing flexibility of GEO satellite antennas is one of the major challenges for new-generation Ku-band payloads. A simple solution to offer (partial) coverage flexibility is to design a passive reconfigurable antenna, with switchable shaped beams. In this paper, 2 kinds of earth deck dual-reflector antennas,will be described. The RF constraints (near field, XPD, bandwidth, phase law) required to optimize such antennas will be detailed. A typical scenario of mission flexibility and associated performances will be presented.

Keywords

reflector antennas; satellite antennas; GEO satellite antennas; Ku-band telecommunications satellites; RF constraints; XPD; coverage flexibility; earth deck dual-reflector antennas; flexibility enhancement; mission flexibility; near field; new-generation Ku-band payloads; passive reconfigurable antenna; phase law; switchable shaped beams; Apertures; Feeds; Geometry; Optics; Optimization; Reflector antennas; Cassegrain; Gregorian; Reflectarray; flexibility;

fLanguage

English

Publisher

ieee

Conference_Titel

Antenna Technology and Applied Electromagnetics (ANTEM), 2012 15th International Symposium on

Conference_Location

Toulouse

Print_ISBN

978-1-4673-0290-6

Type

conf

DOI

10.1109/ANTEM.2012.6262312

Filename

6262312