Multimode grounded finger patch antenna
First Claim
Patent Images
1. An antenna comprising:
- a dielectric substrate having opposing first and second surfaces;
a radiating patch on the first surface of the substrate, said radiating patch having a plurality of edges and a plurality of spaced slots opening along one of the edges;
a ground plane on the second surface of the substrate;
a feed connected to the radiating patch; and
a shunt connected at a first end thereof to the radiating patch adjacent to the feed and connected at a second end thereof to the ground plane.
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Abstract
A small, printed antenna provides high efficiency, good isolation and a broad working bandwidth. These characteristics are achieved with a patch antenna by placing a shunt to ground connected to the feeding point of the patch. This shunt comprises a line running along one edge of the patch. The patch dimensions can be adjusted, and in particular reduced, by changing the L and C characteristics of the patch. This is accomplished with arrays of slots defining corresponding arrays of fingers along the edges of the patch. Impedance matching is achieved by altering the dimensions of the slots.
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Citations
33 Claims
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1. An antenna comprising:
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a dielectric substrate having opposing first and second surfaces;
a radiating patch on the first surface of the substrate, said radiating patch having a plurality of edges and a plurality of spaced slots opening along one of the edges;
a ground plane on the second surface of the substrate;
a feed connected to the radiating patch; and
a shunt connected at a first end thereof to the radiating patch adjacent to the feed and connected at a second end thereof to the ground plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An antenna comprising:
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a dielectric substrate having opposing first and second surfaces;
a generally rectangular radiating patch on the first surface of the substrate having first and second pluralities of spaced slots opening along opposing first and second edges, respectively, of the radiating patch;
a ground plane on the second surface of the substrate;
a feed connected to the radiating patch; and
a shunt connected at a first end thereof to the radiating patch adjacent to the feed and connected at a second end thereof to the ground plane. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. An antenna comprising:
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a dielectric substrate having opposing first and second surfaces;
a generally rectangular radiating patch on the first surface of the substrate having first and second pluralities of spaced slots opening along adjacent first and second edges, respectively, of the radiating patch;
a ground plane on the second surface of the substrate;
a feed connected to the radiating patch; and
a shunt connected at a first end thereof to the radiating patch adjacent to the feed and connected at a second end thereof to the ground plane. - View Dependent Claims (31, 32, 33)
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Specification