Patent ID: 7280081

Claim:
A microwave reflector antenna, comprising: a parabolic main reflector; a waveguide feed section passing through an apex of, and lying along a central axis of, the main reflector; a dielectric cone and a subreflector in communication with the waveguide feed section; the main reflector including a plurality (N) of concentric annular sections arranged in series from a first annular section nearest the central axis of the main reflector to a last annular section defining an outer perimeter of the main reflector, each section having a parabolic reflecting surface between inner and outer perimeters, and a focal point or focal ring associated with each section lying on a reflecting surface of the subreflector, the sections being configured such that the focal point or focal ring associated with each section lies inside an internal volume of the main reflector and is arranged with respect to each other along the central axis, such that an overall depth of the main reflector is decreased; and the subreflector lying within the internal volume of the main reflector.