Excerpt: Recent advancements in fabrication capabilities have renewed interest in the electromagnetic characterization of complex media, as many metamaterials are anisotropic and/or inhomogeneous. Additionally, for composite materials, anisotropy can be introduced by load, strain, misalignment, or damage through the manufacturing process , . Methods for obtaining the constitutive parameters for isotropic materials are well understood and widely employed –. Therefore, it is crucial to develop a practical method for the electromagnetic characterization of anisotropic materials.
IEEE Transactions on Instrumentation and Measurement
N. Rogers, M. Havrilla, M. W. Hyde and A. Knisely, "Nondestructive Electromagnetic Characterization of Uniaxial Sheet Media Using a Two-Flanged Rectangular Waveguide Probe," in IEEE Transactions on Instrumentation and Measurement, vol. 69, no. 6, pp. 2938-2947, June 2020, doi: https://10.1109/TIM.2019.2925408.