United Technologies Corporation

John H Cross

Peter E Raber

A fast switching, variably polarized lens is placed in front of a radar antenna which radiates an electromagnetic wave having any fixed polarization. The radiated electromagnetic wave is coupled to the lens and the switching elements within the lens transform the polarization of the radiated electromagnetic wave as commanded. Each transmit pulse may take on any polarization which the lens is capable of providing independent of the polarization of the previous transmit pulse. Similarly, during receive mode the lens can be set up to allow the radar system to receive a return signal of any polarization independent of the polarization of the return signal's associated transmit signal.

Fast switching polarization diverse radar antenna system

A radar antenna arrangement with at least a pair of feeds, said arrangement including a corresponding at least a pair of lens elements, the element closest to said feeds effective for collimating the output beam of each of said feed, and the remaining ones of said elements each being associated with a different one of said feeds, whereby at least a pair of separate antenna beams are capble of projection toward a target region.

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Weston, CT, United States of America

John H Cross