Patent ID: 8134511

Claim:
A phased array antenna device, comprising: at least one one-dimensional phased array of radiating elements arranged along an array direction, the radiating elements comprising waveguide radiating elements; a lens arranged such that divergent beams from the radiating elements are collimated by the lens in a direction orthogonal to the array direction to produce a beam; a phase control element configured to apply a linear phase gradient to the radiating elements thereby providing one-dimensional electronic beam steering for the antenna device; a plurality of probes arranged in pairs, each pair comprising two orthogonal probes arranged to excite a respective one of the waveguide radiating elements; and a backshort arranged to direct all radiation toward the antenna device, wherein the probes of a pair are configured so that each probe of the pair can be excited independently to produce different polarizations; wherein a gain across the radiating elements is varied to provide amplitude weighting and reduce sidelobes.