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http://dx.doi.org/10.5515/KJKIEES.2008.19.10.1115

An Approach to Estimate Dielectric Constant of Low-Loss Materials Using Dielectric Slab Loaded Cylindrical Cavity Resonators  

Lee, Won-Hui (Educational Institute of Future Information Technology, POSTECH)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.19, no.10, 2008 , pp. 1115-1121 More about this Journal
Abstract
In this paper, dielectric slab loaded cylindrical cavity resonator measurement technique is presented to determine the dielectric constant of a dielectric material. The dielectric constant is measured by the resonant frequency deviation of empty and dielectric slab loaded cavity. Characteristic equations are derived by th exact field analysis. The measurement configurations are formed using HP8719A vector network analyzer and an experimental cylindrical metallic cavity with circular cross-section. The validity of the theory is confirmed by experiments and CST MWS 4.0(3D simulator). The results were in the whole satisfactory. The measured dielectric constant of teflon and bakelite are 2.03 and 4.44, respectively.
Keywords
Dielectric Constant; Dielectric Slab; Cavity Resonator; Dielectric Material;
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