Research Article
Novel Metamaterials for Patch Antennas Applications
@INPROCEEDINGS{10.1007/978-3-642-03819-8_39, author={Theodore Zervos and Fotis Lazarakis and Antonis Alexandridis and Kostas Dangakis and Dimosthenis Stamopoulos and Michalis Pissas}, title={Novel Metamaterials for Patch Antennas Applications}, proceedings={1st International ICST ESA Workshop}, proceedings_a={ESA}, year={2012}, month={6}, keywords={patch antenna ferrimagnetic compound}, doi={10.1007/978-3-642-03819-8_39} }- Theodore Zervos
Fotis Lazarakis
Antonis Alexandridis
Kostas Dangakis
Dimosthenis Stamopoulos
Michalis Pissas
Year: 2012
Novel Metamaterials for Patch Antennas Applications
ESA
Springer
DOI: 10.1007/978-3-642-03819-8_39
Abstract
In this paper we introduce the incorporation of magneto-electric materials into antenna design and the potential of controlling the behavior of the antenna by means of an external magnetic field. After an intensive study of magneto-electric material properties, a ferrimagnetic compound called Yttrium Iron Garnet (YIG) was found to be the best candidate for the novel antenna design. We provide a metamaterial patch antenna design where a part of the substrate is replaced by the YIG compound. After several design modifications the final model includes a circular-shaped YIG substrate just under the metallic patch and offers sufficient performance in terms of resonance, bandwidth and radiation efficiency. Additionally, in the presence of an external magnetic field the polarization becomes elliptical and the sense of the polarization (left or right) can be controlled through the direction of the magnetic field. That latter characteristic confirms the metamaterial-nature of the antenna.