Jerome Brossier

Next generation of multi beam rotating antenna on SWIM scatterometer

In the frame of the development of the instrument SWIM (Surface Waves Investigation and Monitoring) on the CFOSAT program (Chinese French Oceanographic Satellite) funded by CNES, Thales Alenia Space is currently developing a new multi beam rotating antenna in Ku Band. This single reflector offset antenna includes a rotating feed comprising 6 beams.

Earth deck antenna providing coverage flexibility

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.