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Article Dans Une Revue Microwave and Optical Technology Letters Année : 2007

Application of the FDTD method to determine complex permittivity of dielectric materials at microwave frequencies using a rectangular waveguide

J. Terhzaz
  • Fonction : Auteur
H. Ammor
  • Fonction : Auteur
A. Assir
  • Fonction : Auteur

Résumé

A new measurement technique is presented to determine the complex permittivity of a dielectric material. The dielectric sample is loaded in a short-circuited rectangular waveguide. The reflection coefficient of the waveguide is measured by Network analyzer and calculated as a function of the complex permittivity using finite difference time domain method (FDTD). The Newton-Raphson method is then used to determine complex permittivity by matching the calculated value with the measured value. A comparison of determined values of the dielectric constant obtained from the Nicholson-Ross technique and the FDTD method is presented. Numerical resultants for complex permittivity of Tefion and Plexiglass measured at the microwave frequencies are presented.

Dates et versions

hal-00255766 , version 1 (14-02-2008)

Identifiants

Citer

J. Terhzaz, H. Ammor, A. Assir, A. Mamouni. Application of the FDTD method to determine complex permittivity of dielectric materials at microwave frequencies using a rectangular waveguide. Microwave and Optical Technology Letters, 2007, 49, pp.1964-1968. ⟨10.1002/mop.22611⟩. ⟨hal-00255766⟩
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