Multifunctional metasurface antenna

A method for constructing a multifunctional antenna structure configured to generate a plurality of radiation patterns, the method comprising:

• determining, by processing circuitry, a desired source field associated with the plurality of radiation patterns;
• receiving feed locations for a plurality of feeds of a waveguide to an antenna aperture surface of an antenna, wherein the feed locations are disposed at different spatially-defined positions on the waveguide;
• defining a grid on the antenna aperture surface, the grid defining a plurality of candidate resonator locations;
• implementing a placement procedure on the plurality of candidate resonator locations comprising:
• placing a first metasurface resonator at a first resonator location of the plurality of candidate resonator locations in response to selecting the first metasurface resonator by determining, from amongst a collection of candidate metasurface resonators having differing geometries and associated polarizabilities defined in candidate library, which candidate metasurface resonator placed at the first resonator location exhibits, based on the feed locations and a plurality of degrees of freedom for the first resonator location, a minimum error relative to the desired source field amongst the collection of candidate metasurface resonators and satisfies a maximum error threshold relative to the desired source field;
• and
• discarding from consideration any metasurface resonator at a second resonator location from the plurality of candidate resonator locations in response to determining, by the processing circuitry, that no candidate metasurface resonator amongst the collection of candidate metasurface resonators placed at the second resonator location satisfies the maximum error threshold.