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Improvements in the analysis of a TH0mp cavity for precise complex permittivity measurements

✍ Scribed by Louis Marchildon; Cevdet Akyel; Jawad Abdulnour; Sylvain Gauthier

Book ID
102906417
Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
804 KB
Volume
4
Category
Article
ISSN
0894-3370

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✦ Synopsis

Abstract

An analysis of the relationship between complex permittivity and complex resonance frequency is proposed for a cylindrical cavity oscillating in a TM~0__mp__~ mode. Effects of wall conductivity, coupling loops, and holes for the insertion of dielectric samples are fully taken into account. With dielectric samples of small radii, insertion holes produce the most important corrections. Their effect is modelled through a finite difference solution of the field equations in the neighbourhood of the holes. A computer program is described for the analysis, the use of which is illustrated with results of measurements.

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## Abstract For in situ measurement of the complex permittivity of planar materials, a free‐space system based on reflection or transmission ellipsometry has been developed and extended to microwave frequencies. Different angles of incidence were studied in the range [35–50Β°]. Original numerical me