Permittivity measurements at microwave frequencies using Epsilon-Ear-Zero (ENZ) tunnel structure

A planar epsilon-near-zero (ENZ) tunnel structure implemented on substrate integrated waveguide (SIW) technology is used to evaluate the complex dielectric permittivity of various materials. Design, optimization, and fabrication of the ENZ tunnel structure are explained. Simulations and measurements...

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Detalles Bibliográficos
Autores: Humberto Lobato Morales, ALONSO CORONA CHAVEZ, JOSE LUIS OLVERA CERVANTES, JUAN MARTINEZ BRITO
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2011
País:México
Institución:Instituto Nacional de Astrofísica, Óptica y Electrónica
Repositorio:Repositorio Institucional del INAOE
Idioma:inglés
OAI Identifier:oai:inaoe.repositorioinstitucional.mx:1009/1692
Acceso en línea:http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1692
Access Level:acceso abierto
Palabra clave:info:eu-repo/classification/Cavity perturbation methods/Cavity perturbation methods
info:eu-repo/classification/epsilon-near-zero (ENZ)/epsilon-near-zero (ENZ)
info:eu-repo/classification/Permittivity measurements/Permittivity measurements
info:eu-repo/classification/substrate integrated waveguide (SIW)/substrate integrated waveguide (SIW)
info:eu-repo/classification/cti/1
info:eu-repo/classification/cti/22
info:eu-repo/classification/cti/2203
Descripción
Sumario:A planar epsilon-near-zero (ENZ) tunnel structure implemented on substrate integrated waveguide (SIW) technology is used to evaluate the complex dielectric permittivity of various materials. Design, optimization, and fabrication of the ENZ tunnel structure are explained. Simulations and measurements on various dielectric samples using the cavity perturbation technique of the proposed structure are presented. Measured values of the permittivity are in good agreement with standard values. Sensitivity analyses are performed on the ENZ structure and the conventional SIW cavity techniques. The proposed structure has very high sensitivity, which yields more accurate results when compared to other techniques, such as perturbation of conventional cavities.