Cabello N. Miguel Ruiz, Antonio J. Martín Valverde, Borja Plaza Gallardo, M. Frövel, David Poyatos Martínez, A. Bretones, S. García
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A subcell FDTD Scheme implementation for thin slot modeling
The finite-difference time-domain (FDTD) method is not able to efficiently model thin features without a drastic reductions of the spatial mesh size, potentially yielding an unfeasible use of memory and CPU requirements. In this work we propose two stable and efficient techniques for dealing with thin apertures in FDTD, one based on conformal and one based on subgridding. These are compared, in two different scenarios, with the classical dispersive magnetic material approximation [DMMA] based on Gilbert-Holland's models.
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