Document Type

Article

Publication Date

6-2009

Abstract

A nondestructive technique for determining the complex permittivity and permeability of a perfect electric conductor backed magnetic shielding material using a dual waveguide probe is presented. The dual waveguide probe allows for the simultaneous collection of reflection and transmission coefficients which distinguishes it from single probe methods common in the literature. Theoretical development of these coefficients, which is accomplished through a coupled magnetic field integral equations formulation using Love's equivalence principle and solved via the method of moments (MOM), is discussed. Evaluation of the resulting MOM impedance matrix elements is performed using complex plane integration leading to enhanced computational efficiency and physical insight. Comparison of the theoretical and measured reflection and transmission coefficients using a root finding algorithm leads to the desired permittivity and permeability. Measurement results of a magnetic shielding material are presented and compared to traditional methods for the purpose of validating the new technique. The probe's sensitivity to aperture alignment, sample thickness, and flange thickness is also investigated.
Abstract © AGU.

Comments

© Copyright 2009 by the American Geophysical Union. All rights reserved;

Permission to Deposit an Article in an Institutional Repository. https://publications.agu.org/author-resource-center/usage-permissions/ Adopted by [AGU] Council 13 December 2009. "AGU allows authors to deposit their journal articles if the version is the final published citable version of record, the AGU copyright statement is clearly visible on the posting, and the posting is made 6 months after official publication by the AGU"

Sourced from the published version of record cited below. DOI Link

DOI

10.1029/2008RS003937

Source Publication

Radio Science

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