Patent ID: 8089415
Filing Date: 2012-01-03
Classification: H01Q

Abstract:
1. A feed for an antenna, the antenna configured for use with a radar system or a satellite communication system, the feed configured to operate in multiple bands, the feed comprising: a plurality of concentric waveguides; a first pair of diametrically opposed probes forming a first axis and electrically coupled to at least one of the plurality of concentric waveguides; and a second pair of diametrically opposed probes forming a second axis and electrically coupled to the at least one of the plurality of concentric waveguides, the first axis and second axis being orthogonal, the first and second pairs of diametrically opposed probes configured to generate a sum beam and a difference beam in the at least one of the plurality of concentric waveguides; a third pair of diametrically opposed probes disposed along the first axis and a fourth pair of diametrically opposed probes disposed along the second axis, wherein the third pair and the fourth pair are electronically coupled to an inner concentric waveguide of the plurality of concentric waveguides.