A Mode-Matching-Based Technique for Electromagnetic Characterization of Anisotropic Materials in Cylindrical Waveguides
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In this paper, we present a mode-matching technique (MMT) formulation for the electromagnetic characterization of measurement cells (MCs) for uniaxial anisotropic materials. We present and validate a technique for modeling MCs with one- and two-ports via generalized scattering matrices (GSMs) extracted from the MMT. Since closed-form solutions are used for computing the coupling integrals of the GSMs, the present approach is a computationally-efficient alternative to modeling MCs when compared to usual brutal-force techniques. An inverse algorithm is also presented to retrieve the constitutive parameters of complex media (lossy and anisotropic materials). Differently from the majority of the works using semi-analytical methods, the novelty of the present method rely on considering overmoded MCs.
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anisotropic media, measurement cell, mode-matching technique
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Inglês
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IEEE MTT-S International Microwave Symposium Digest, v. 2022-June, p. 483-486.
