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2013-02-27

A New Open Cavity at Millimeter Wave Band for Permittivity Measurement of Dielectrics

By Wen-Bin Dou and Bo Xiang
Progress In Electromagnetics Research M, Vol. 29, 181-192, 2013
doi:10.2528/PIERM13011502

Abstract

In this paper, an open cavity is proposed to measure the permittivity of dielectrics. The cavity consists of an ellipsoidal mirror and two planar mirrors. The relationship between the parameters of the beam in the open cavity and the cavity geometrical parameters is presented. The transcendental equation of dielectric loaded cavity is presented, from which the permittivity of the dielectric can be solved. The resonance frequencies of the vacuum cavity and loaded cavity are computed by the resonance frequency formula and the transcendental equation. they are compared to the results from FDTD simulation. The results from two methods are almost same with each other. The advantage of the proposed open cavity over the conventional open cavity composed of spherical mirror and planar mirror is demonstrated.

Citation


Wen-Bin Dou and Bo Xiang, "A New Open Cavity at Millimeter Wave Band for Permittivity Measurement of Dielectrics," Progress In Electromagnetics Research M, Vol. 29, 181-192, 2013.
doi:10.2528/PIERM13011502
http://jpier.org/PIERM/pier.php?paper=13011502

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