Title :
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
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;
Conference_Titel :
Antenna Technology and Applied Electromagnetics (ANTEM), 2012 15th International Symposium on
Conference_Location :
Toulouse
Print_ISBN :
978-1-4673-0290-6
DOI :
10.1109/ANTEM.2012.6262312
