Reflector antenna having sidelobe suppression elements

The present invention relates to electromagnetic wave reception and transmission apparatus and more particularly, to a reflector type antenna having elements disposed on the reflective surface thereof for suppressing unwanted sidelobes in the original antenna pattern. Various techniques have been used in the past for nulling or suppressing selected sidelobes in directional antenna systems. One such technique is adaptive nulling, particularly suitable for phased array systems, where a null is electronically placed in the antenna response pattern to reduce the amount of energy received from a jamming signal source. Adaptive nulling, however, requires costly components, complex algorithms, often requires long signal processing times, and is not suitable for reflector type antennas.