Asymmetric chiral metamaterial superstrate for patch antenna polarization transformation

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URI: http://hdl.handle.net/10902/11127
ISBN: 978-88-907018-6-3
ISBN: 978-1-5090-2234-2
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Autoría
Fernández Fernández, ÓscarAutoridad Unican; Gómez Gómez, ÁlvaroAutoridad Unican; Basterrechea Verdeja, JoséAutoridad Unican; Vegas García, ÁngelAutoridad Unican
Fecha
2016
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© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Publicado en
10th European Conference on Antennas and Propagation (EuCAP), Davos, Switzerland, 2016, 3298-3301.
Editorial
IEEE
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Palabras clave
Chiral metamaterial
Patch antenna
Superstrate
Circular polarization
Resumen/Abstract
Planar superstrates constituted by Chiral Metamaterials structures can transform the radiation properties of an antenna. In this communication, an asymmetric chiral metamaterial based structure is proposed. Due to the lack of C4 symmetry in the design, the transmission coefficients depend on the incident wave polarization and display high transmission for one circular polarization but low transmission for the other one. The proposed structure is then used to improve the radiation characteristics of a microstrip patch antenna. Taking advantage of the properties of the asymmetric chiral structure, the polarization of the radiated field is modified, transforming the linear polarization of the microstrip antenna into a circular one.
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