A Mode-Matching-Based Technique for Electromagnetic Characterization of Anisotropic Materials in Cylindrical Waveguides

• Autor(a) principal: Rodrigues, Ricardo R.
• Data de Publicação: 2022
• Outros Autores: Cosenza, Vivian B., Rosa, Guilherme S., Penchel, Rafael A. [UNESP]
• Tipo de documento: Artigo de conferência
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1109/IMS37962.2022.9865348; http://hdl.handle.net/11449/245908
• topic: anisotropic media; measurement cell; mode-matching technique

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.