Tunable bilayered metasurface for frequency reconfigurable directive emissions
- 9 August 2010
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 97 (6), 064101
- https://doi.org/10.1063/1.3478214
Abstract
The directive emission from a bilayered metamaterial surface is numerically and experimentally reported. The LC-resonant metasurface is composed of both a capacitive and an inductive grid constituted by copper strips printed on both sides of a dielectric board. By the incorporation of varactor diodes in the capacitive grid, resonance frequency and phase characteristics of the metamaterial can be tuned. The tunable phase metasurface is used as a partially reflecting surface in a Fabry–Perot resonance cavity. Far field radiation patterns obtained by direct measurements show the reconfigurability of emission frequency while maintaining an enhanced directivity.Keywords
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