MULTIPLE ANTENNA ASSEMBLY UTILIZING ELECTRO BAND GAP ISOLATION STRUCTURES
First Claim
1. An antenna assembly for a wireless communication device comprising:
- a substrate of dielectric material and having a first surface and a second surface on opposite sides of the substrate;
a ground plane formed by a layer of electrically conductive material on the first surface;
a first radiating element disposed on the substrate;
a second radiating element disposed on the substrate and spaced apart from the first radiating element; and
at least one metal-dielectric isolation structure supported on the substrate between the first and second radiating elements at positions only at which an electric current is present that has a current density greater than a predefined threshold, wherein each metal-dielectric isolation structure resonates at a given frequency that inhibits mutual signal coupling between the first and second radiating elements.
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Accused Products
Abstract
A multiple antenna assembly with high isolation between the antennas is disclosed. The assembly includes a dielectric substrate with a ground plane and first and second antennas thereon. One or more metal-dielectric isolation structures are on the substrate at locations at which an electric current is present that has a current density greater than a predefined threshold. Each metal-dielectric isolation structure resonates at a given frequency that inhibits mutual signal coupling between the first and second antennas. Various configurations, such as concentric ring patterns, for the metal-dielectric isolation structures are disclosed. A device can be provided to dynamically tune the given frequency of the metal-dielectric isolation structures to correspond to radio frequency signals emitted by the first and second antennas.
32 Citations
24 Claims
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1. An antenna assembly for a wireless communication device comprising:
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a substrate of dielectric material and having a first surface and a second surface on opposite sides of the substrate; a ground plane formed by a layer of electrically conductive material on the first surface; a first radiating element disposed on the substrate; a second radiating element disposed on the substrate and spaced apart from the first radiating element; and at least one metal-dielectric isolation structure supported on the substrate between the first and second radiating elements at positions only at which an electric current is present that has a current density greater than a predefined threshold, wherein each metal-dielectric isolation structure resonates at a given frequency that inhibits mutual signal coupling between the first and second radiating elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An antenna assembly for a wireless communication device comprising:
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a substrate of dielectric material and having a first surface and a second surface on opposite sides of the substrate; a ground plane formed by a layer of electrically conductive material on the first surface; a first radiating element disposed on the substrate; a second radiating element disposed on the substrate and spaced apart from the first radiating element; and a plurality of metal-dielectric isolation structures forming a non-periodic array on the substrate, wherein each metal-dielectric isolation structure resonates at a given frequency that inhibits mutual signal coupling between the first and second radiating elements. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification