Title :
Characterization of complex permittivity properties of materials in rectangular waveguides using a hybrid iterative method
Author :
Esteban, H. ; Catala-Civera, J.M. ; Cogollos, S. ; Boria, V.E.
Author_Institution :
Dept. of Commun., Univ. Politecnica de Valencia, Spain
fDate :
5/1/2000 12:00:00 AM
Abstract :
In many microwave applications, an accurate knowledge of the complex permittivity properties of materials is usually required. A new procedure for the accurate determination of these properties is presented, based on an optimization algorithm that makes use of measured scattering parameters and simulated results of a cylindrical rod of dielectric material passing completely through a rectangular waveguide. The simulation tool employed consists of a very accurate hybrid iterative method. Results for the permittivity properties of ethanol (high-loss liquid material) are presented and validated with results from the literature
Keywords :
S-parameters; dielectric liquids; dielectric-loaded waveguides; iterative methods; microwave measurement; optimisation; permittivity; rectangular waveguides; spectral-domain analysis; complex permittivity properties; cylindrical rod; dielectric material; ethanol; high-loss liquid material; hybrid iterative method; optimization algorithm; permittivity properties; rectangular waveguides; scattering parameters; Dielectric materials; Dielectric measurements; Electromagnetic scattering; Electromagnetic waveguides; Ethanol; Iterative methods; Permittivity measurement; Rectangular waveguides; Scattering parameters; Transmission line matrix methods;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
