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http://dx.doi.org/10.7236/JIWIT.2012.12.2.199

A Permittivity Measurement of Dielectric Slabs Using a Parallel Plate Waveguide  

Cho, Gyo-Yeong (공주대학교 대학원 정보통신공학과)
Park, Wee-Sang (공주대학교 전기전자제어공학부)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.12, no.2, 2012 , pp. 199-203 More about this Journal
Abstract
This paper introduces a simple new procedure approach to determine the permittivity of dielectric slabs. The method uses a parallel plate waveguide which supports a TEM mode. The presence of the dielectric slab placed at the bottom of the waveguide makes the speed of the TEM wave slower. The relationship between the change of the speed and the permittivity of the dielectric slab allows the determination of the permittivity. The relationship is analyzed electromagnetically, and the results of measurements are in good agreement with the analysis.
Keywords
Permittivity measurement; parallel plate waveguide; simple procedure; phase velocity;
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