Projected artificial magnetic mirror
First Claim
1. A projected artificial magnetic mirror (PAMM) comprises:
- a plurality of conductive spiral coils arranged in an array on a first layer of a substrate;
a metal backing on a second layer of the substrate;
a dielectric material between the first and second layers of the substrate, wherein the plurality of conductive spiral coils is electrically coupled to the metal backing to form an inductive-capacitive network that, for a given frequency band, substantially reduces surface waves along an artificial magnetic conductor having a shape determined, at least in part, by the arrangement of the plurality of conductive spiral coils; and
an antenna element on a third layer of the substrate that is constructed to service communications in the given frequency band, the first layer of the substrate between the second layer and the third layer, and the first layer separated from the third layer by other dielectric material, wherein the artificial magnetic conductor and the antenna element operate to form an effective dish antenna.
7 Assignments
0 Petitions
Accused Products
Abstract
A projected artificial magnetic mirror (PAMM) includes conductive coils, a metal backing, and a dielectric material. The conductive coils are arranged in an array on a first layer of a substrate and the metal backing is on a second layer of the substrate. The dielectric material is between the first and second layers of the substrate. The conductive coils are electrically coupled to the metal backing to form an inductive-capacitive network that, for a a selected frequency band, substantially reduces surface waves along a PAMM surface, the PAMM surface residing within the substrate or above the substrate. The PAMM surface may be substantially adjacent or coexistent with the first layer.
13 Citations
20 Claims
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1. A projected artificial magnetic mirror (PAMM) comprises:
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a plurality of conductive spiral coils arranged in an array on a first layer of a substrate; a metal backing on a second layer of the substrate; a dielectric material between the first and second layers of the substrate, wherein the plurality of conductive spiral coils is electrically coupled to the metal backing to form an inductive-capacitive network that, for a given frequency band, substantially reduces surface waves along an artificial magnetic conductor having a shape determined, at least in part, by the arrangement of the plurality of conductive spiral coils; and an antenna element on a third layer of the substrate that is constructed to service communications in the given frequency band, the first layer of the substrate between the second layer and the third layer, and the first layer separated from the third layer by other dielectric material, wherein the artificial magnetic conductor and the antenna element operate to form an effective dish antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A projected artificial magnetic mirror (PAMM) comprises:
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a plurality of conductive coils arranged in an array on a first layer of a substrate, wherein a conductive coil of the plurality of coils includes; a first winding having a first shape; a second winding having a shape similar to the first shape; a first coupling circuit that, when enabled, couples the first and second windings in series; and a second coupling circuit that, when enabled, couples the first and second windings in parallel; a metal backing on a second layer of the substrate, and a dielectric material between the first and second layers, wherein the plurality of conductive coils are electrically coupled to the metal backing to form an inductive-capacitive network that, for a given frequency band, substantially reduces surface waves along artificial magnetic conductors having shapes determined, at least in part, by the arrangement of the plurality of conductive coils; a plurality of antennas on a third layer of the substrate that are constructed to service communications in the given frequency band, the first layer of the substrate between the second layer and the third layer, and the first layer separated from the third layer by other dielectric material; and additional dielectric material disposed between the plurality of antennas to alter radiation patterns of the plurality of antennas, wherein the artificial magnetic conductor and the plurality of antennas operate to form a plurality of effective dish antennas. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification