Patent ID: 6295034
Filing Date: 2001-09-25
Classification: H01Q

Abstract:
A common aperture reflector antenna, comprising:a main reflector having a generally parabolic reflective surface and a boresight axis extending from a vertex of the main reflector through a focal point of the main reflector;a feed located generally at the focal point for illuminating the main reflector with and/or receiving from the main reflector radio frequency (RF) energy of a predefined RF wavelength to transmit/receive RF energy; andat least one of a sub-reflector and a sensor located generally at the focal point for reflecting or receiving energy of a predefined wavelength different from the predefined RF wavelength,wherein a blockage of the main reflector due to the sub-reflector or the sensor along the boresight axis is equal or greater than a blockage of the main reflector due to the feed, andthe feed is configured to direct a majority of RF energy from the feed towards regions of the main reflector which are not blocked by the sub-reflector or the sensor.