Surface scattering antenna array

摘要

An array of scattering and/or reflector antennas are configured to produce a series of beam patterns, where in some embodiments the scattering antenna and/or the reflector antenna includes complementary metamaterial elements. In some embodiments control circuitry is operably connected to the array to produce an image of an object in the beam pattern.

主权项

1. An apparatus comprising:
a scattering antenna having a first plurality of scattering elements, each of the scattering elements in the first plurality of scattering elements having an individual electromagnetic response to an incident electromagnetic wave, and wherein the scattering antenna is configured to produce a first radiation field responsive to the incident electromagnetic wave; a reflector antenna arranged to receive at least a portion of the first radiation field, the reflector antenna having a second plurality of scattering elements, wherein the reflector antenna is responsive to reflect a portion of the first radiation field to produce a second radiation field different from the first radiation field; a detector configured to receive at least a portion of the second radiation field; and wherein the scattering antenna includes a waveguide supportive of a discrete set of modes, and wherein the scattering antenna is configured to produce a first set of radiation field patterns corresponding to the set of modes.