RIDGED WAVEGUIDE FEED STRUCTURES FOR RECONFIGURABLE ANTENNA
First Claim
Patent Images
1. A reconfigurable holographic antenna comprising:
- a metamaterial layer including an array of tunable slots configurable to form holographic diffraction patterns, wherein a reactance of each tunable slot in the array of tunable slots is individually tunable; and
a ridged waveguide including a ridge configured to influence coupling between a received feed wave and the array of tunable slots, wherein the metamaterial layer is conductively coupled to the ridged waveguide, and wherein the holographic diffraction patterns formed by the array of tunable slots generate a desired antenna wave in response to the received feed wave.
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Abstract
A reconfigurable holographic antenna includes a metamaterial layer and a waveguide with at least one ridge. The metamaterial layer includes an array of tunable slots configurable to form holographic diffraction patterns. A reactance of each tunable slot in the array of tunable slots is individually tunable. The at least one ridge influences coupling between tunable slots in the array of tunable slots. The holographic diffraction patterns formed by the array of tunable slots generate a desired antenna wave in response to a received feed wave.
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Citations
21 Claims
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1. A reconfigurable holographic antenna comprising:
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a metamaterial layer including an array of tunable slots configurable to form holographic diffraction patterns, wherein a reactance of each tunable slot in the array of tunable slots is individually tunable; and a ridged waveguide including a ridge configured to influence coupling between a received feed wave and the array of tunable slots, wherein the metamaterial layer is conductively coupled to the ridged waveguide, and wherein the holographic diffraction patterns formed by the array of tunable slots generate a desired antenna wave in response to the received feed wave. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A reconfigurable holographic antenna comprising:
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a metamaterial layer including an array of tunable slots configurable to form holographic diffraction patterns, wherein a reactance of each slot in the array of tunable slots is individually tunable; and a double-ridge waveguide including two ridges positioned to reduce mutual coupling between proximate tunable slots in the array of tunable slots when a received feed wave propagates through the double-ridge waveguide, wherein the holographic diffraction patterns formed by the array of tunable slots generate a desired antenna wave in response to the received feed wave. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification