Grid Antenna
First Claim
Patent Images
1. An antenna comprising:
- a layer of conductor having a plurality of non-conductive slits disposed therein, each slit comprising a longitudinal dimension greater than a transverse dimension;
a feed structure disposed beneath the layer of conductor to couple signal energy between the feed structure and the slits, wherein the feed structure crosses each slit in the transverse direction at least once; and
a dielectric layer separating the layer of conductor from the feed structure.
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Abstract
An antenna comprising a layer of conductor having a plurality of non-conductive slits disposed therein, each slit comprising a longitudinal dimension greater than a transverse direction, a feed line disposed beneath the layer of conductor to couple signal energy between the feed line and the slits, wherein the feed line crosses each slit in the transverse direction at least once, and a dielectric layer separating the layer of conductor from the feed line.
92 Citations
22 Claims
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1. An antenna comprising:
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a layer of conductor having a plurality of non-conductive slits disposed therein, each slit comprising a longitudinal dimension greater than a transverse dimension; a feed structure disposed beneath the layer of conductor to couple signal energy between the feed structure and the slits, wherein the feed structure crosses each slit in the transverse direction at least once; and a dielectric layer separating the layer of conductor from the feed structure. - 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. A radio frequency identification tag reader comprising:
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circuitry for reading data stored in a radio frequency identification tag; and an antenna for at least one of transmitting near field radiation to excite a radio frequency identification tag and receiving near field radiation from a radio frequency identification tag comprising a layer of conductor having a plurality of non-conductive slits disposed therein, each slit comprising a longitudinal dimension greater than a transverse direction, a feed structure disposed beneath the layer of conductor to couple signal energy between the feed structure and the slits, wherein the feed structure crosses each slit in the transverse direction at least once, and a dielectric layer separating the layer of conductor from the feed structure.
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Specification