Back to results
US 9,806,414 B2Granted
Modulation patterns for surface scattering antennas
AssigneeThe Invention Science Fund I, LLC
InventorsPai-Yen Chen, Tom Driscoll, Siamak Ebadi, John Desmond Hunt, Nathan Ingle Landy, Melroy Machado, Milton Perque, Jr., David R. Smith, Yaroslav A. Urzhumov
Life of this patent
Estimating the term…
Abstract
Modulation patterns for surface scattering antennas provide desired antenna pattern attributes such as reduced side lobes and reduced grating lobes.
Claims33
A method, comprising:
- discretizing a hologram function for a surface scattering antenna that defines an aperture, where the discretizing includes
- identifying a discrete plurality of locations on the aperture for a discrete plurality of scattering elements of the surface scattering antenna and
- identifying a discrete set of states for each of the scattering elements corresponding to a discrete set of function values at each of the locations of the scattering elements;
- and
- identifying an antenna configuration that reduces artifacts attributable to the discretizing, wherein the identifying of the antenna configuration includes dithering the discretized hologram function.
2 more elements
A system, comprising:
- a surface scattering antenna with a plurality of adjustable scattering elements that are adjustable between a discrete set of states corresponding to a discrete set of function values at each location in a plurality of locations for the plurality of adjustable scattering elements;
- a storage medium on which a set of antenna configurations corresponding to a set of hologram functions is written, each antenna configuration being selected to reduce artifacts attributable to a discretization of the respective hologram function;
- 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;
- wherein at least one antenna configuration is a dithered discretization of the respective hologram function.
2 more elements
A method of controlling a surface scattering antenna with a plurality of adjustable scattering elements, comprising:
- reading an antenna configuration from a storage medium, the antenna configuration being selected to reduce artifacts attributable to a discretization of a hologram function;
- and
- adjusting the plurality of adjustable scattering elements to provide the antenna configuration;
- wherein the adjustable scattering elements are adjustable between a discrete set of states corresponding to a discrete set of function values at each location in a plurality of locations for the plurality of adjustable scattering elements;
- and
- wherein the antenna configuration is a dithered discretization of the hologram function.
3 more elements
Dependencies are inferred from the claim text.