HE-R1000 Antenna Feed System developed by Thales Alenia Space in Italy

The paper provides an overview of the dual reflector afocal imaging system fed by an active phased array for Earth Observation developed by Thales Alenia Space in Italy (TAS-I). In section II, an overview on X band active antennas heritage is presented with a focus on Cosmo SkyMed and Cosmo Second Generation products while in section III, HE-R1000 antenna is described, going into details of Large Unfurable Reflector Assembly (LURA), Feed Array Assembly (FAA) and their integration into SAR Antenna Subsystem (SAS).