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US 6,720,936 B1Granted
Adaptive antenna system
AssigneeBBNT Solutions LLC
InventorsRichard M. Koolish, Brig Barnum Elliott
Life of this patent
Estimating the term…
Abstract
An adaptive antenna system (20) includes a programmable reflection surface (22), a controller (24) in communication wit the programmable reflection surface (22), and a feeder element (26) outwardly spaced from a receiving side (28) of the programmable reflection surface (22). The controller (24) is operable to write a pattern (34) of reflective (36) and absorptive (42) regions into the programmable reflection surface (22) in accordance with a frequency and a direction of a received or transmitted electromagnetic wave (32). The controller (24) is further operable to write patterns (68, 80) into the programmable reflection surface (22) to dynamically adjust adaptive antenna system (20) to changing frequencies and directions of transmitted and received electromagnetic waves.
Claims21
An adaptive antenna system comprising:
- a programmable reflection surface comprised of electronic paper for reflecting an electromagnetic wave;
- and
- a controller in communication with said programmable reflection surface, said controller being operable to write a pattern into said programmable reflection surface in accordance with a frequency of said electromagnetic wave, said pattern including a reflective region and an absorptive region.
An adaptive antenna system comprising:
- a programmable reflection surface for reflecting an electromagnetic wave;
- and
- a controller in communication with said programmable reflection surface, said controller being operable to write a pattern into said programmable reflection surface in accordance with a frequency of said electromagnetic wave, said pattern including:
- a reflective region including reflective rings arranged about a center point of said pattern;
- and
- an absorptive region including absorptive rings arranged about said center point and in alternating relationship with said reflective rings.
3 more elements
An adaptive antenna system comprising:
- a programmable reflection surface for reflecting an electromagnetic wave;
- and
- a controller in communication with said programmable reflection surface, said controller being operable to write a pattern into said programmable reflection surface in accordance with a frequency of said electromagnetic wave, said pattern including a reflective region and an absorptive region;
- and
- wherein said programmable reflection surface comprises a light transparent body having a plurality of optically anisotropic particles contained within dielectric liquid-filled cavities thereof, each of said particles having a reflective surface and an absorptive surface, and said controller is configured to apply an electric field across selected portions of said body whereby said particles contained within said selected portions of said body will rotate to expose selected ones of said reflective and absorptive surfaces to a receiving side of said programmable reflection surface to provide said pattern.
2 more elements
An adaptive antenna system comprising:
- a programmable reflection surface for reflecting an electromagnetic wave;
- and
- a controller in communication with said programmable reflection surface, said controller being operable to write a pattern into said programmable reflection surface in accordance with a frequency of said electromagnetic wave, said pattern including a reflective region and an absorptive region said controller further operable to erase said pattern and write a second pattern into said programmable reflection surface in accordance with a second frequency of said electromagnetic wave, said second pattern including a second reflective region and a second absorptive region.
An adaptive antenna system comprising:
- a programmable reflection surface for reflecting an electromagnetic wave;
- and
- a controller in communication with said programmable reflection surface, said controller being operable to write a pattern into said programmable reflection surface in accordance with a frequency of said electromagnetic wave, said pattern including a reflective region and an absorptive region said controller further operable to erase said pattern and write a second pattern into said programmable reflection surface in accordance with a direction of said electromagnetic wave, said second pattern including a second reflective region and a second absorptive region.
An adaptive antenna system comprising:
- electronic paper for reflecting an electromagnetic wave, said electronic paper being electrically writable and erasable and having a programmable reflective surface communicatively associated therewith;
- a controller in communication with said electronic paper, said controller being operable to write a pattern into said programmable reflective surface in accordance with a frequency and a direction of said electromagnetic wave, said pattern including a reflective region and an absorptive region;
- and
- a feeder element outwardly spaced from a receiving side of said electronic paper such that a location of said feeder element relative to said electronic paper defines a focal point for said pattern.
1 more element
An adaptive antenna system comprising:
- a programmable reflection surface for reflecting an electromagnetic wave;
- a controller in communication with said programmable reflection surface, said controller being operable to write a first pattern into said programmable reflection surface at a first instant in accordance with a first frequency of said electromagnetic wave, said first pattern including a first reflective region and a first absorptive region, and said controller being further operable to erase said first pattern and write a second pattern into said programmable reflection surface at a second instant in accordance with a second frequency of said electromagnetic wave, said second pattern including a second reflective region and a second absorptive region;
- and
- a feeder element outwardly spaced from a receiving side of said programmable reflection surface such that a location of said feeder element relative to said programmable reflection surface defines a focal point for said first and second patterns.
1 more element
Dependencies are inferred from the claim text.