Ka-band user antennas for VHTS GEO applications

Very High Throughput Satellite (VHTS) user antennas with their large number of beams and very large beam scans present several new design challenges. One of these challenges is to control scan aberrations as they lead to high scan losses, low C/I and ultimately, lower capacity. This paper presents a comparison between the results of various array-fed reflector antenna designs that are considered for VHTS missions.