Thin film based split resonator tunable metamaterial
First Claim
1. An apparatus, the apparatus being a metamaterial comprising:
- a substrate;
a plurality of resonators supported on the substrate, each resonator including;
a first conducting segment and a second conducting segment;
at least one adjustable capacitor located between the first and second conducting segments; and
at least one bias capacitor located between the first and second conducting segments; and
bias lines configured so as to allow a bias potential to be applied between the first and second conducting segments so as to vary the capacitance of the adjustable capacitor,the plurality of resonators including a column of resonators supported on the substrate,the bias lines including a first bias line electrically connected to first conducting segment of each resonator in the column of resonators, and a second bias line electrically, connected to the second conducting segment of each resonator in the column of resonators,a bias potential applied between the first and second conducting segments adjusting all adjustable capacitors within the column of resonators,the plurality of resonators having bias capacitor values varying with spatial position on the substrate so as to provide a gradient index with no bias potential applied,the apparatus being an electrically tunable metamaterial.
2 Assignments
0 Petitions
Accused Products
Abstract
A metamaterial comprises a substrate and a plurality of resonators supported by the substrate, each resonator including a first conducting segment and a second conducting segment, there being at least one adjustable capacitor and at least one bias capacitor located between the first and second conducting segments. In some examples, the first conducting segment, second conducting segment, bias capacitor, and adjustable capacitor are substantially coplanar and may be formed by patterning a metal film supported by the substrate. Bias lines may be configured so as to allow a bias potential to be applied between the first and second conducting segments so as to vary the capacitance of the adjustable capacitor.
40 Citations
18 Claims
-
1. An apparatus, the apparatus being a metamaterial comprising:
-
a substrate; a plurality of resonators supported on the substrate, each resonator including; a first conducting segment and a second conducting segment; at least one adjustable capacitor located between the first and second conducting segments; and at least one bias capacitor located between the first and second conducting segments; and bias lines configured so as to allow a bias potential to be applied between the first and second conducting segments so as to vary the capacitance of the adjustable capacitor, the plurality of resonators including a column of resonators supported on the substrate, the bias lines including a first bias line electrically connected to first conducting segment of each resonator in the column of resonators, and a second bias line electrically, connected to the second conducting segment of each resonator in the column of resonators, a bias potential applied between the first and second conducting segments adjusting all adjustable capacitors within the column of resonators, the plurality of resonators having bias capacitor values varying with spatial position on the substrate so as to provide a gradient index with no bias potential applied, the apparatus being an electrically tunable metamaterial. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An apparatus, the apparatus being a metamaterial comprising:
-
a substrate, the substrate being a planar substrate; a plurality of resonators supported on the substrate, each resonator including; a first conducting segment and a second conducting segment; an adjustable capacitor located between the first and second conducting segments; and a bias capacitor located between the first and second conducting segments, the bias capacitor being a planar interdigitated capacitor; and bias lines configured so as to allow a bias potential to be applied between the first and second conducting segments so as to vary the capacitance of the adjustable capacitor, the plurality of resonators including a column of resonators supported on the substrate, the bias lines including a first bias line electrically connected to first conducting segment of each resonator in the column of resonators, and a second bias line electrically connected to the second conducting segment of each resonator in the column of resonators, a bias potential applied between the first and second conducting segments adjusting all adjustable capacitors within the column of resonators, the plurality of resonators having bias capacitor values varying with spatial position on the substrate so as to provide a gradient index with no bias potential applied, the apparatus being an electrically tunable metamaterial. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A method of fabricating an electrically tunable metamaterial, the method comprising:
-
providing a substrate supporting a conducting film, patterning the conducting film so as to obtain a plurality of resonators, each resonator including a first conducting segment, a second conducting segment, a bias capacitor, and electrodes for an adjustable capacitor, the bias capacitor and the adjustable capacitor being located between the first and second conducting segments; and introducing a voltage-tunable material between the first and second conducting segments to form the adjustable capacitor, so as to obtain the electrically tunable metamaterial, the plurality of resonators including a column of resonators supported on the substrate, the metamaterial including a first bias line electrically connected to first conducting segment of each resonator in the column of resonators, and a second bias line electrically connected to the second conducting segment of each resonator in the column of resonators, a bias potential applied between the first and second conducting segments adjusting all adjustable capacitors within the column of resonators, the bias capacitor being an elongated interdigitated capacitor, the first conducting segment, second conducting segment, bias capacitor, and adjustable capacitor being substantially coplanar. - View Dependent Claims (18)
-
Specification