CPC H01Q 21/0037 (2013.01) [H01Q 13/20 (2013.01)] | 17 Claims |
1. An apparatus comprising:
a traveling-wave antenna array comprising a plurality of adjacent traveling-wave antennas, wherein the plurality of adjacent traveling-wave antennas comprise a plurality of adjacent metamaterial radiating waveguide antennas, each adjacent metamaterial radiating waveguide antenna comprising an array of metamaterial radiators coupled to a waveguide, each metamaterial radiator comprising an individually addressable tunable component that can be tuned over a spectral bandwidth to generate different radiation patterns; and
a phase diversity feed coupled to the traveling-wave antenna array and configured to provide adjustable phase diverse input to two or more of the plurality of adjacent traveling-wave antennas, the phase diverse input comprising a first phase for a first traveling-wave antenna and a second phase for a second traveling-wave antenna, the first phase being different from the second phase, wherein the phase diverse input is selected to suppress grating lobes for a directed beam pattern selected for transmission.
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