Negative electrical permittivity in metamaterials for a wire of rectangular cross-sectional: an application to antennas design

In this article, we propose a model to obtain negative electrical permittivity in metamaterials using a conductor wire of rectangular cross-sectional geometry. Plasma frequency in the GHz range is determined in terms of the wire geometry. This new composite dielectric, which has the property of nega...

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Bibliographic Details
Published in:Journal of electromagnetic waves and applications 2020-09, Vol.34 (14), p.1842-1848
Main Authors: Lorduy G, Héctor, Castellanos, L. M.
Format: Article
Language:English
Subjects:
Electrical permittivity
metamaterials
plasma frequency
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Summary:In this article, we propose a model to obtain negative electrical permittivity in metamaterials using a conductor wire of rectangular cross-sectional geometry. Plasma frequency in the GHz range is determined in terms of the wire geometry. This new composite dielectric, which has the property of negative electrical permittivity below the plasma frequency, opens new possibilities for GHz devices. Finally, we show a unitary metamaterial cell where the refractive index takes negative values over a wide frequency range.
ISSN:0920-5071
1569-3937
DOI:10.1080/09205071.2020.1791739