Antennas Based on Metamaterial Structures
First Claim
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1. An antenna device, comprising:
- a dielectric substrate having a first surface on a first side and a second surface on a second side opposing the first side;
a cell conductive patch formed on the first surface;
a cell ground conductive electrode formed on the second surface and in a footprint projected by the cell conductive patch onto the second surface;
a main ground electrode formed on the second surface and separated from the cell ground conductive electrode;
a cell conductive via connector formed in the substrate to connect the cell conductive patch to the cell ground conductive electrode;
a conductive feed line formed on the first surface and having a distal end located close to and electromagnetically coupled to the cell conductive patch to direct an antenna signal to or from the cell conductive patch; and
a conductive stripe line formed on the second surface and connecting cell ground conductive electrode to the main ground electrode,wherein the cell conductive patch, the substrate, the cell conductive via connector and the cell ground conductive electrode, and the electromagnetically coupled conductive feed line are structured to form a composite left and right handed (CRLH) metamaterial structure.
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Abstract
Techniques, apparatus and systems that use one or more composite left and right handed (CRLH) metamaterial structures in processing and handling electromagnetic wave signals. Antennas and antenna arrays based on enhanced CRLH metamaterial structures are configured to provide broadband resonances for various multi-band wireless communications.
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Citations
25 Claims
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1. An antenna device, comprising:
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a dielectric substrate having a first surface on a first side and a second surface on a second side opposing the first side; a cell conductive patch formed on the first surface; a cell ground conductive electrode formed on the second surface and in a footprint projected by the cell conductive patch onto the second surface; a main ground electrode formed on the second surface and separated from the cell ground conductive electrode; a cell conductive via connector formed in the substrate to connect the cell conductive patch to the cell ground conductive electrode; a conductive feed line formed on the first surface and having a distal end located close to and electromagnetically coupled to the cell conductive patch to direct an antenna signal to or from the cell conductive patch; and a conductive stripe line formed on the second surface and connecting cell ground conductive electrode to the main ground electrode, wherein the cell conductive patch, the substrate, the cell conductive via connector and the cell ground conductive electrode, and the electromagnetically coupled conductive feed line are structured to form a composite left and right handed (CRLH) metamaterial structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An antenna device, comprising:
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a dielectric substrate having a first surface on a first side and a second surface on a second side opposing the first side; a plurality of cell conductive patches formed over the first surface to be separated from and adjacent to one another to allow capacitive coupling between two adjacent cell conductive patches; a main ground electrode formed on the second surface outside a footprint projected collectively by the cell conductive patches onto the second surface; a plurality of cell ground electrodes formed on the second surface to spatially correspond to the cell conductive patches, one cell ground electrode to one cell conductive patch, respectively, wherein each cell ground electrode is within a footprint projected by a respective cell conductive patch onto the second surface, and wherein the cell ground electrodes are spatially separate from the main ground electrode; a plurality of conductive via connectors formed in the substrate to connect the cell conductive patches to the cell ground electrodes, respectively, to form a plurality of unit cells that construct a composite left and right handed (CRLH) metamaterial structure; and at least one conductive stripe line formed on the second surface to connect the plurality of cell ground electrodes to the main ground electrode. - View Dependent Claims (16, 17, 18, 19, 20)
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21. An antenna device, comprising:
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a first dielectric substrate having a first top surface on a first side and a first bottom surface on a second side opposing the first side; a second dielectric substrate having a second top surface on a first side and a second bottom surface on a second side opposing the first side, the first and second dielectric substrates stacking over each other to engage the second top surface to the first bottom surface; a plurality of cell conductive patches formed on the first top surface to be separated from and adjacent to one another to allow capacitive coupling between two adjacent cell conductive patches; a first main ground electrode formed on the first surface and spatially separate from the cell conductive patches, the first main ground electrode patterned to form a co-planar waveguide that is electromagnetically coupled to a selected cell conductive patch of the cell conductive patches to direct an antenna signal to or from the selected cell conductive patch; a second main ground electrode formed between the first and second substrates and on the second top surface and the first bottom surface; a plurality of cell ground electrodes formed on the second bottom surface to spatially correspond to the cell conductive patches, one cell ground electrode to one cell conductive patch, respectively, wherein each cell ground electrode is within a footprint projected by a respective cell conductive patch onto the second bottom surface; a plurality of bottom ground electrodes formed on the second bottom surface below the second main ground electrode; a plurality of ground conductive via connectors formed in the second substrate to connect the bottom ground electrodes to the second main electrode, respectively; and a plurality of bottom surface conductive stripe lines formed on the second bottom surface to connect the plurality of cell ground electrodes to the bottom ground electrodes, respectively. - View Dependent Claims (22, 23, 24)
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25. An antenna device, comprising:
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a dielectric substrate having a first surface on a first side and a second surface on a second side opposing the first side; a cell conductive patch formed over the first surface; a perfect magnetic conductor (PMC) structure comprising a perfect magnetic conductor (PMC) surface and engaged to the second surface of the substrate to press the PMC surface against the second surface; a cell conductive via connector formed in the substrate to connect the cell conductive patch to the PMC surface; and a conductive feed line formed on the first surface and having a distal end located close to and electromagnetically coupled to the cell conductive patch to direct an antenna signal to or from the cell conductive patch, wherein the cell conductive patch, the substrate, the cell conductive via connector, electromagnetically coupled conductive feed line, and the PMC surface are structured to form a composite left and right handed (CRLH) metamaterial structure.
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Specification