Space qualification of K/Ka-band single feed per beam feed chains

In this paper we report on design and qualification of two types of compact dual circularly polarised K/Ka-band feed chains for multi-spot single feed per beam applications. The presented feed products were developed to engineering qualification model (EQM) standard in the frame of ESA ARTES 3–4 and can be applied for user beam as well as gateway communication. Additionally one type of feed chain provides radio frequency (RF) sensing capability for an automatic tracking system enabling a more accurate antenna pointing. Qualification test results just as a comparisan of predicted and measured performance will be shown.