Finite-Element Modeling of Metasurfaces With Generalized Sheet Transition Conditions

A modeling of metasurfaces in the finite-element method (FEM) based on generalized sheet transition conditions (GSTCs) is presented. The discontinuities in electromagnetic fields across a metasurface as represented by the GSTC are modeled by assigning nodes to both the sides of the metasurface. The...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2017-05, Vol.65 (5), p.2413-2420
Main Authors: Sandeep, Srikumar, Jian-Ming Jin, Caloz, Christophe
Format: Article
Language:English
Subjects:
Antennas
Bianisotropy
boundary condition
electromagnetic discontinuity
Electromagnetics
Finite element analysis
finite-element method (FEM)
generalized sheet transition condition (GSTC)
Mathematical model
metasurface
Numerical models
Solid modeling
susceptibility
Two dimensional displays
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Summary:A modeling of metasurfaces in the finite-element method (FEM) based on generalized sheet transition conditions (GSTCs) is presented. The discontinuities in electromagnetic fields across a metasurface as represented by the GSTC are modeled by assigning nodes to both the sides of the metasurface. The FEM-GSTC formulation in both 1-D and 2-D domains is derived and implemented. The method is extended to handle more general bianistroptic metasurfaces. The formulations are validated by several illustrative examples.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2017.2679478