LOW INDEX METAMATERIAL
First Claim
1. A low index metamaterial, comprising:
- a dielectric layer; and
a plurality of conductors on a surface of the dielectric layer, embedded in the dielectric layer or both;
wherein the low index metamaterial appears as a medium having a dielectric constant less than one with respect to electromagnetic waves at predetermined frequencies and propagating at grazing angles with respect to a surface of the low index metamaterial.
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Accused Products
Abstract
Various aspects of the disclosure provide low index metamaterials. The low index metamaterials may be used to form soft and/or hard electromagnetic (EM) boundaries to facilitate desired EM performance or propagation in applications including feed horns, spatial feed/combiners, isolation barriers between antennas or RF modules, and reduced radar cross-section applications. In one aspect, a low index metamaterial comprises a dielectric layer and a plurality of conductors on a surface of the dielectric layer, embedded in the dielectric layer or both, wherein the low index metamaterial appears as a medium having a dielectric constant less than one with respect to electromagnetic waves at predetermined frequencies and propagating at grazing angles with respect to a surface of the low index metamaterial.
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Citations
19 Claims
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1. A low index metamaterial, comprising:
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a dielectric layer; and a plurality of conductors on a surface of the dielectric layer, embedded in the dielectric layer or both; wherein the low index metamaterial appears as a medium having a dielectric constant less than one with respect to electromagnetic waves at predetermined frequencies and propagating at grazing angles with respect to a surface of the low index metamaterial. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A hard boundary liner, comprising:
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a low index metamaterial, the low index metamaterial comprising; a first dielectric layer; and a plurality of conductors on a surface of the dielectric layer, embedded in the first dielectric layer or both; wherein the low index metamaterial appears as a medium having a dielectric constant less than one with respect to an electromagnetic waves at predetermined frequencies and propagating at grazing angles with respect to a surface of the low index metamaterial; and a second dielectric layer overlaying the low index metamaterial. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A low index metamaterial, comprising:
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a plurality of interconnected wires forming a free-standing three-dimensional grid structure; wherein the low index metamaterial appears as a medium having a dielectric constant less than one with respect to electromagnetic waves at predetermined frequencies and propagating at grazing angles with respect to a surface of the low index metamaterial. - View Dependent Claims (17, 18, 19)
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Specification