Holloway et al. develop a retrieval method that assigns metasurfaces/metafilms with effective surface susceptibilities. The method is based on the generalized sheet transition conditions (GSTCs), which allows the metasurface/metafilms to be replaced by an infinitely thin equivalent surface. The effective surfaces susceptibilities can be drawn from the GSTCs by calculating averaged fields across the surface, and connected to bulk effective material properties by identifying effective thickness. This method provides unique characterization of metasurfaces/metafilms, and can be useful in studying anisotropic thin films.
C. Holloway, E. Kuester, and A. Dienstfrey
IEEE Antennas and Wireless Propagation Letters
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