Measurement of Complex Permittivity and Permeability Using Two Flanged Rectangular Waveguides

In this paper, a non-destructive material parameter extraction technique which uses two flanged rectangular waveguides is presented. The technique improves on existing single probe methods, common in the literature, by its ability to easily measure reflection and transmission coefficients necessary for extraction of ε
_r
and μ
_r
over all frequencies. Love's Equivalence Principle is used to create a system of coupled magnetic field integral equations (MFIEs) which are solved using the Method of Moments (MoM). Measurement results for two R-cards and one magnetic shielding material are shown.