Tunable metamaterials
First Claim
Patent Images
1. A metamaterial, comprising:
- a support medium;
a plurality of resonant circuits,at least one resonant circuit of the plurality of resonant circuits being a tunable resonant circuit, including;
a conducting pattern, anda variable capacitor including a tunable material,the tunable material being located within a capacitive gap of the tunable resonant circuit,the capacitive gap being formed as a physical gap between first and second segments of the conducting pattern; and
an electrical connection allowing an electrical control signal to be applied to the tunable material,the electrical control signal being applied directly to the first and second segments of the conducting pattern using the electrical connection,the tunable material having a permittivity that is adjustable using the electrical control signal, using an electric field provided by the electrical control signal to adjust both the permittivity of the tunable material and a resonance frequency of the tunable resonant circuit,the tunable material being a ferroelectric material.
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Abstract
A metamaterial comprises a support medium, such as a planar dielectric substrate and a plurality of resonant circuits supported thereby. At least one resonant circuit is a tunable resonant circuit including a conducting pattern and a tunable material, so that an electromagnetic parameter (such as resonance frequency) may be adjusted using an electrical control signal applied to the tunable material.
44 Citations
7 Claims
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1. A metamaterial, comprising:
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a support medium; a plurality of resonant circuits, at least one resonant circuit of the plurality of resonant circuits being a tunable resonant circuit, including; a conducting pattern, and a variable capacitor including a tunable material, the tunable material being located within a capacitive gap of the tunable resonant circuit, the capacitive gap being formed as a physical gap between first and second segments of the conducting pattern; and an electrical connection allowing an electrical control signal to be applied to the tunable material, the electrical control signal being applied directly to the first and second segments of the conducting pattern using the electrical connection, the tunable material having a permittivity that is adjustable using the electrical control signal, using an electric field provided by the electrical control signal to adjust both the permittivity of the tunable material and a resonance frequency of the tunable resonant circuit, the tunable material being a ferroelectric material. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification