학술논문
Negative electrical permittivity in metamaterials for a wire of rectangular cross-sectional: an application to antennas design.
Document Type
Article
Author
Source
Subject
*PERMITTIVITY
*NEGATIVE refraction
*PLASMA frequencies
*WIRE
*ANTENNAS (Electronics)
*REFRACTIVE index
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Language
ISSN
0920-5071
Abstract
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. [ABSTRACT FROM AUTHOR]