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Broadband Complex Permittivity Measurements of Dielectric Substrates using a Split-Cylinder Resonator

Published

Author(s)

Michael D. Janezic, James R. Baker-Jarvis, Edward Kuester

Abstract

We summarize a theoretical model for the split-cylinder resonator, based on the mode-matching method, for nondestructively measuring permittivity and loss tangent with the split-cylinder resonator. This new model correctly accounts for the fringing electric and magnetic fields, thereby improving the measurement accuracy of the technique. Previously, the split-cylinder resonator has been used for single-frequency permittivity and loss tangent measurements using only the fundamental TE011 resonant mode. Using higher-order TE0np modes, we demonstrated how to measure the permittivity and loss tangent of dielectric substrates over an extended frequency range. We validated the new model by measuring the permittivity and loss tangent from 10 to 50 GHz of fused-silica substrates and compared them with measurement data obtained with a circular-cylindrical cavity, a dielectric-post resonator, and several split-post resonators.
Proceedings Title
2004 IEEE-MTT-S International Microwave Symposium Digest
Conference Dates
June 6-11, 2004
Conference Location
Fort Worth, TX, USA
Conference Title
2004 IEEE MTT-S International Microwave Symposium

Keywords

cavity resonator, dielectric measurements, loss tangent, permittivity

Citation

Janezic, M. , Baker-Jarvis, J. and Kuester, E. (2004), Broadband Complex Permittivity Measurements of Dielectric Substrates using a Split-Cylinder Resonator, 2004 IEEE-MTT-S International Microwave Symposium Digest, Fort Worth, TX, USA (Accessed February 23, 2024)
Created June 10, 2004, Updated October 12, 2021