An electronically tunable high-impedance metamaterial ground plane and its application to a high-gain 2-D leaky-wave antenna is presented. A nematic state liquid crystal is inserted in the gap between the lower array and the ground plane. The radiation properties of this antenna are controlled by applying an external voltage bias that alters the intrinsic permittivity of the LC substrate and hence the reflection characteristics of the HIS ground.
|Title of host publication||Proceedings of the Metamaterials 2010 Congress|
|Subtitle of host publication||Proceedings of the Fourth International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, Karlsruhe, Germany, September 2010|
|Publication status||Published - 2010|