Flexible multi-beam, multi frequency, wideband RF and digital transceiver architecture for modular metasurface antenna

An antenna architecture comprising:

• a plurality of metasurface antenna tiles, each metasurface antenna tile of the plurality of metasurface antenna tiles having one or more feed ports configured to be individually fed to support one or more independent beams, wherein the plurality of metasurface antenna tiles is configurable into a plurality of sub-arrays of metasurface antenna tiles to produce multiple simultaneous beams from one or more individual metasurface antenna tiles or from different sub-arrays of the plurality of sub-arrays;
• a plurality of digital back ends (DBEs) coupled to the plurality of metasurface antenna tiles, wherein each DBE of the plurality DBEs is coupled to one sub-array of the plurality of sub-arrays of metasurface antenna tiles to:
• adjust time delays of one or more of received signals arriving from metasurface antenna tiles of the one sub-array of metasurface antenna tiles as part of time delay beamforming and combine the received signals in a digital domain to produce one or more beamformed signals, and
• delay transmit signals fed to the plurality of tiles in the digital domain by adjusting time delays of one or more of the transmit signals as part of time delay beamforming,
• wherein the time delays applied to received and transmit signals compensate for differences in receive and transmit paths, respectively, and in feed delays for each of the plurality of metasurface antenna tiles, the feed delays being a function of geometry of each sub-array of the plurality of sub-arrays and spacing between the plurality of sub-arrays.