Tunable metamaterial antenna structures
First Claim
Patent Images
1. A metamaterial antenna device comprising:
- a substrate;
a plurality of electrically conductive parts formed on the substrate, including;
a ground electrode;
a cell patch;
a via line connecting the cell patch and the ground electrode;
a feed line, a distal end of which is electromagnetically coupled to the cell patch through a gap to direct a signal to or from the cell patch; and
a meander stub, one end of which is connected to the feed line; and
a plurality of tuning elements formed on the substrate,wherein the electrically conductive parts are configured to form a composite right and left handed (CRLH) metamaterial antenna structure that generates a first plurality of frequency resonances when none of the tuning elements is connected to any of the electrically conductive parts,wherein the first plurality of frequency resonances include a first left handed (LH) mode resonance and a first low right handed (RH) mode resonance in a low band and a first high RH mode resonance in a high band, andwherein one or more of the tuning elements, when electrically connected to the conductive parts, reconfigure the CRLH MTM antenna structure to generate a second plurality of frequency resonances different from the first plurality of frequency resonances.
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Abstract
Apparatus and techniques that provide tuning elements in antenna devices to tune frequencies of the antenna devices, including composite right and left handed (CRLH) metamaterial (MTM) antenna devices. Examples of the tuning elements for CRLH MTM antenna devices include feed line tuning elements, cell patch tuning elements, meandered stub tuning elements, via line tuning elements, and via pad tuning elements tuning elements that formed near corresponding antenna elements such as the feed line, cell patch, meander stub, via line and via pad, respectively.
11 Citations
23 Claims
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1. A metamaterial antenna device comprising:
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a substrate; a plurality of electrically conductive parts formed on the substrate, including; a ground electrode; a cell patch; a via line connecting the cell patch and the ground electrode; a feed line, a distal end of which is electromagnetically coupled to the cell patch through a gap to direct a signal to or from the cell patch; and a meander stub, one end of which is connected to the feed line; and a plurality of tuning elements formed on the substrate, wherein the electrically conductive parts are configured to form a composite right and left handed (CRLH) metamaterial antenna structure that generates a first plurality of frequency resonances when none of the tuning elements is connected to any of the electrically conductive parts, wherein the first plurality of frequency resonances include a first left handed (LH) mode resonance and a first low right handed (RH) mode resonance in a low band and a first high RH mode resonance in a high band, and wherein one or more of the tuning elements, when electrically connected to the conductive parts, reconfigure the CRLH MTM antenna structure to generate a second plurality of frequency resonances different from the first plurality of frequency resonances. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of tuning a metamaterial antenna device, comprising:
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providing a substrate for the metamaterial antenna device; forming a plurality of conductive parts on the substrate to form a composite right and left handed (CRLH) metamaterial antenna structure that generates a first plurality of frequency resonances, the forming the plurality of conductive parts including; forming a ground electrode, a feed line and a cell patch; forming a via line to connect the cell patch and the ground electrode; electromagnetically coupling a distal end of the feed line to the cell patch through a gap to direct a signal to or from the cell patch; and forming a meander stub with one end attached to the feed line; and forming a plurality of tuning elements on the substrate; and connecting one or more of the tuning elements to the conductive parts to reconfigure the CRLH MTM antenna structure in a way that generates a second plurality of frequency resonances, wherein the CRLH MTM antenna structure generates a first left handed (LH) mode resonance and a first low right handed (RH) mode resonance in a low band and a first high RH mode resonance in a high band. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification