Metamaterials
First Claim
Patent Images
1. A metamaterial lens comprising:
- a dielectric host supporting at least one lattice of elements and configured to form a metamaterial having a negative permeability and permittivity, at least a portion of said metamaterial forming a grating structure configured to alter the direction electromagnetic waves incident thereon.
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Abstract
One exemplary metamaterial is formed from a plurality of individual unit cells, at least a portion of which have a different permeability than others. The plurality of individual unit cells are arranged to provide a metamaterial having a gradient index along at least one axis. Such metamaterials can be used to form lenses, for example.
169 Citations
27 Claims
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1. A metamaterial lens comprising:
a dielectric host supporting at least one lattice of elements and configured to form a metamaterial having a negative permeability and permittivity, at least a portion of said metamaterial forming a grating structure configured to alter the direction electromagnetic waves incident thereon. - View Dependent Claims (2)
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3. An artificially structured composite metamaterial having spatially varying electromagnetic properties comprising:
a dielectric host supporting a plurality of elements that form a composite metamaterial, at least a portion of said elements differing in one or both of their electric or magnetic polarization from others of said plurality of elements wherein said composite metamaterial exhibits a spatial variation in one or more of permittivity and permeability along one or more axes, said permeability variation being independent from said permittivity. - View Dependent Claims (4, 5, 6, 7, 8)
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9. A method for forming a composite metamaterial having a spatial gradient of electromagnetic response comprising the steps of:
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forming a plurality of repeated unit cells, each of said unit cells comprising a dielectric supporting a plurality of conductors, each of said plurality of repeated unit cells having conductor dimensions and dielectric dimensions; causing a portion of said repeated unit cells to have an effective permeability different from others of said repeated unit cells by varying one or more of said conductor dimensions and said dielectric dimensions; and
,arranging said portion of said plurality of unit cells to form a metamaterial having a gradient index of effective permeability along at least one direction.
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10. A metamaterial lens having a gradient index n comprising:
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a dielectric host supporting a plurality of individual elements, each of said individual elements having electric and magnetic polarizations, said dielectric host and said plurality of individual elements forming a metamaterial; and
,said dielectric host and said plurality of individual elements being arranged to provide a varying effective index along at least one axis and to focus electromagnetic radiation incident on said metamaterial. - View Dependent Claims (11, 12)
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13. A composite metamaterial comprising:
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at least one dielectric substrate layer having two planar opposing surfaces; a plurality of first conductors formed in a plurality of passages in said at least one dielectric substrate layer at a normal to said two opposing planar surfaces; and
,wherein said plurality of first conductors are spatially arranged with said at least one dielectric substrate layer to define a metamaterial. - View Dependent Claims (14, 15)
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16. A composite metamaterial comprising:
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a plurality of unit cells, each unit cell comprising; a plurality of dielectric polymer layers in a stacked arrangement; a first split ring conductor extending across said plurality of stacked dielectric polymer layers; at least one substantially straight conductor element supported on one of said plurality of dielectric polymer layers; and
,wherein said plurality of unit cells are configured to define a metamaterial. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A modular metamaterial comprising:
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at least one generally planar base dielectric substrate having at least one first connector; at least one second generally planar dielectric substrate having at least one second connector configured to cooperate with said at least one first connector to connect said at least one second generally planar dielectric substrate at an angle of substantially 90°
to said at least one generally base dielectric substrate; andeach of said at least one generally planar base dielectric substrate and said at least one second generally planar dielectric substrate having a plurality of first conductors arranged in an array, wherein said at least one generally planar base dielectric substrate and said at least one second generally planar dielectric substrate form a three dimensional metamaterial when connected together. - View Dependent Claims (23, 24)
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25. A metamaterial comprising:
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a dielectric host supporting at least one lattice of conducting elements to form a metamaterial; and
,at least one electrical component embedded said lattice of conducting elements, said component comprising one or more of a capacitor, a diode, an amplifier, a transistor, an inductor, a resistor, or a FET. - View Dependent Claims (26)
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27. A metamaterial having a negative index for waves having arbitrary incident polarization comprising:
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a dielectric substrate; an array of first conductors supported by said dielectric; an array of second conductors supported by said dielectric interspersed with said first array of conductors, each of said second conductors oriented at an angle of about 90°
to each of said first conductors;an array of third substantially straight conductors arranged in a grid pattern and supported by said dielectric, said third conductors interspersed with and spaced apart from said first and second conductors; and
,wherein said first, second and third conductors and said dielectric define a metamaterial having a negative permeability and a negative permittivity over some frequency band for incident wavelengths having any polarization.
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Specification