Surface scattering antennas with frequency shifting for mutual coupling mitigation

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A system for operating an antenna with a plurality of adjustable radiative elements having a respective plurality of adjustable resonant frequencies, comprising:

• a storage medium on which a set of antenna configurations is written, each antenna configuration being selected to increase first selected resonant frequencies for first selected radiative elements and to decrease second selected resonant frequencies for second selected radiative elements adjacent to the first selected radiative elements, whereby to reduce couplings between the first selected radiative elements and the second selected radiative elements;
• and
• control circuitry operable to read antenna configurations from the storage medium and adjust the plurality of adjustable scattering elements to provide the antenna configurations.

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A method of controlling an antenna with a plurality of adjustable radiative elements having a respective plurality of adjustable resonant frequencies, comprising:

• reading an antenna configuration from a storage medium, the antenna configuration being selected to increase first selected resonant frequencies for first selected radiative elements and to decrease second selected resonant frequencies for second selected radiative elements adjacent to the first selected radiative elements, whereby to reduce couplings between the first selected radiative elements and the second selected radiative elements;
• and
• adjusting the antenna to provide the antenna configuration.

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