Fractal cross slot antenna
AssigneeRaytheon Company
InventorSteven D. Eason
Life of this patent
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Abstract
A fractal cross slot broad band antenna comprises a five layer configuration including a radiating fractal cross slot layer having a plurality of antennas each comprising a plurality of radiating arms. Positioned adjacent one side of the fractal cross slot layer is a first spacer layer configured to define a cavity. A microstrip coupled feed layer having feeds equal in number to the plurality of radiating arms is positioned adjacent to the first spacer layer. A second spacer layer is positioned adjacent the feed layer and is configured to also define a cavity. The fifth layer, a ground plane layer, has a copper clad surface and is positioned adjacent the second spacer layer.
Claims25
A fractal cross slot broad band antenna, comprising:
- a radiating fractal cross slot layer having at least one radiating antenna element comprising a plurality of unit cells;
- a first spacer layer configured to define a first cavity, the first spacer layer positioned adjacent one side of the radiating cross slot layer;
- a feed layer having feeds equal in number to the at least one radiating antenna element, the feed layer positioned adjacent to the first spacer layer;
- a second spacer layer configured to define a second cavity, the second spacer layer positioned adjacent to the feed layer;
- and
- a ground plane layer comprising a copper clad surface, said ground plane layer positioned adjacent the second spacer layer.
A fractal cross slot broad band antenna array, comprising:
- a radiating fractal cross slot layer having a plurality of cross slot antennas each cross slot antenna comprising a plurality of radiating arms;
- a first spacer layer configured to define a first cavity, the first spacer layer position adjacent one side of the radiating fractal cross slot layer;
- a feed layer having feeds equal in number to the plurality of arms of the fractal slot antenna, the feed layer positioned adjacent to the first spacer layer;
- a second spacer layer configured to define a cavity, the second spacer layer positioned adjacent to the feed layer;
- and
- a ground plane layer comprising a copper clad surface, said ground plane layer positioned adjacent the second spacer layer.
An antenna element for a fractal slot antenna, comprising:
- a unit cell comprising a plurality of slot segments, each slot segment having one end coupled to an adjacent slot segment at an angle of less than 90 degrees;
- and
- a plurality of unit cells coupled together in a continuous pattern, each unit cell coupled to an adjacent unit cell to form an antenna element for a fractal slot antenna.
A fractal slot antenna, comprising:
- a support surface;
- a fractal slot antenna element formed on the support surface, the fractal slot antenna element comprising:
- a unit cell comprising a plurality of slot segments, each slot segment having one end coupled to an adjacent slot segment at an angle of less than 90 degrees;
- a plurality of unit cells coupled together in a continuous pattern, each unit cell coupled to an adjacent unit cell to form a fractal slot antenna element;
- and
- a wave guide feed coupled to the fractal slot antenna element.
Dependencies are inferred from the claim text.