Extension of the 2-D CP-FDTD Thin Slot Algorithm to 3-D for Shielding Analysis
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Extension of the 2-D CP-FDTD Thin Slot Algorithm to 3-D for Shielding AnalysisAbstract
The two-dimensional CP-FDTD thin slot algorithm is extended to three-dimensions for the application to shielding analysis in electromagnetic compatibility. The accuracy and the applicability of the 3-D CP-FDTD scheme to the slot width were validated with finer mesh model and capacitive thin-slot formalism (C-TSF). The model taken by the comparison is originated from a thin slot in an enclosure wall. The numerical results indicate that the performance or accuracy will descend with the augment of the slot width. Good agreements with the results of finer mesh modeling can be expected as the slot width is on the order of the mesh dimension, and quite large discrepancies from the results of C-TSF with the slot width far less than mesh dimension. The 3D CP-FDTD algorithm will be utilized when the slot width is comparatively large and otherwise C-TSF will be used. Taking advantage of both of them will avoid finer mesh in thin slots modeling such as the shielding analysis of the electronic enclosure.
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