Patent ID: 8760354

Claim:
A communications system comprising: an antenna array including: a plurality of antennas configured to receive an information signal from a source, each antenna including a dielectric lens coupled to a respective antenna that focuses the information signal to a feed point of the respective antenna, each dielectric lens having a plano-convex exterior shape that comprises a single step Fresnel feature having a substantially trapezoidal shape, wherein a first boundary of the single step Fresnel feature is formed adjacent and substantially parallel to a planar surface of the dielectric lens and a convex surface of the dielectric lens extends outwardly from an aperture of the respective antenna; and a waveguide feed network coupled to each antenna of the plurality of antennas and constructed and arranged receive the information signal from the plurality of antennas and to guide the signal to a first feed port and a second feed port, the waveguide feed network comprising a plurality of orthomode transducers, each orthomode transducer coupled to a respective one of the plurality of antennas and configured to split the information signal into a first component signal having a first polarization and a second component signal having a second polarization, the second polarization being orthogonal to the first polarization; and a polarization converter unit coupled to the first feed port and a second feed port and configured to compensate for polarization skew between the antenna array and the source; wherein the feed network is coupled to the plurality of antennas via the plurality of orthomode transducers; wherein the feed network is constructed and arranged to receive the first component signal and the second component signal from each orthomode transducer and to provide a first summed component signal at the first feed port and a second summed component signal at the second feed port; and wherein the polarization converter unit is coupled to the first and second feed ports and is further configured to receive the first summed component signal and the second summed component signal and to compensate for phase imbalance between the first and second summed component signals and to provide output signals.