Abstract: A radio frequency antenna system comprising a plurality of antenna elements arranged in an array, such array comprising a pair of subarrays of antenna elements coupled to a pair of electromagnetic lenses. Each lens includes a plurality of array ports, the plurality of array ports of the first lens being coupled to the antenna elements of a first one of the pair of subarrays, and the plurality of array ports of the second lens being coupled to the antenna elements of a second one of the pair of subarrays. The first lens further comprises a first set of beam ports, and the second lens further comprises a second set of beam ports, the first and second sets of beam ports being arranged to form corresponding first and second sets of interleaved beams of radio frequency energy.

Abstract: Radio frequency array antenna structures and methods for fabricating such structures are disclosed wherein a plurality of radio frequency circuits forming the radiating face of an array antenna and a corporate feed are formed on one or more relatively flexible dielectric sheets and then bonded to a suitable core material to form a complete array structure which is light weight, inexpensive and structurally sound.