A beam-waveguide feed compensating beam peak shift for multi-beam reflector antennas

摘要

Recently, multi-beam antennas are applied to earth station and radio telescope. These antennas require rotating primary feed array to track radio objectives. However, the relative positions of each beam vary with rotating the feed array because of the offset configuration of beam waveguide feed. In this paper, to compensate the beam peak shift, we propose a beam waveguide feed which consists of four quadratic mirrors. Further, we verify the characteristics of the designed beam waveguide feed.