Cassegrainian antenna with beam waveguide feed to reduce spillover

摘要

An aerial system (antenna system) comprises dual-reflector aerial consisting of a main reflector and subreflector; a primary feed whose input and output ends are fixed for elevation and azimuth rotation of said dual-reflector aerial; a plane reflector which is turned together with said dual-reflector aerial around an elevation rotating axis; a first curved reflector for reflecting waves generated from said primary feed; and second and third curved reflectors which sequentially reflect to lead the wave reflected by said first curved reflector to said plane reflector.