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.
Bibliographical noteFunding Information:
Héctor Lorduy acknowledge the financial support of the Universidad Pontificia Bolivariana, Medellín-Colombia, its Centro de Ciencia Básica and the Centro de Investigación para el Desarrollo y la Innovación, CIDI, in marked within the project 545C-12/19-27.
H?ctor Lorduy acknowledge the financial support of the Universidad Pontificia Bolivariana, Medell?n-Colombia, its Centro de Ciencia B?sica and the Centro de Investigaci?n para el Desarrollo y la Innovaci?n, CIDI, in marked within the project 545C-12/19-27.
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- Electrical permittivity
- plasma frequency