Dynamic polarization and coupling control from a steerable cylindrically fed holographic antenna
First Claim
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1. An antenna comprising:
- an antenna feed to input a cylindrical feed wave that propagates outwardly and concentrically from the feed; and
a radio-frequency (RF) tunable slotted array of a plurality of surface scattering antenna elements coupled to the antenna feed, wherein the cylindrical feed wave interacts with the RF array to generate a beam, wherein the RF array comprises a plurality of slots oriented at an angle relative to a propagation direction of cylindrical feed wave impinging at a central location of said each slot.
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Abstract
An apparatus is disclosed herein for a cylindrically fed antenna and method for using the same. In one embodiment, the antenna comprises an antenna feed to input a cylindrical feed wave and a tunable slotted array coupled to the antenna feed.
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Citations
25 Claims
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1. An antenna comprising:
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an antenna feed to input a cylindrical feed wave that propagates outwardly and concentrically from the feed; and a radio-frequency (RF) tunable slotted array of a plurality of surface scattering antenna elements coupled to the antenna feed, wherein the cylindrical feed wave interacts with the RF array to generate a beam, wherein the RF array comprises a plurality of slots oriented at an angle relative to a propagation direction of cylindrical feed wave impinging at a central location of said each slot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An antenna comprising:
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an antenna feed to input a cylindrical feed wave that propagates concentrically from the feed; a dielectric layer through which the feed wave travels; a plurality of slots oriented at an angle relative to a propagation direction of cylindrical feed wave; a plurality of patches, wherein each of the patches is co-located over and separated from a slot in the plurality of slots using a liquid crystal layer and forming a patch/slot pair, each patch/slot pair being turned off or on based on application of a voltage to the patch in the pair specified by a control pattern, wherein the cylindrical feed wave interacts with patch/slot pairs to generate a beam when the cylindrical feed wave impinges at a central location of said each slot. - View Dependent Claims (25)
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Specification