Subcell FDTD Analysis of Shielding Effectiveness of Thin-Walled Magnetic Enclosure with an Aperture

摘要

An improved subcell model is presented for including thin material sheets method in the finite-difference time-domain (FDTD) method. This improved subcell can be used to simulate magnetic (μ_s ≠μ_0) thin material sheet. The improved subcell model is verified by comparison with the analytical results for the analysis of shielding effectiveness of the electromagnetic wave through a thin material sheet. Update equations for components of the field on special spatial grids which are on edges and corners of the enclosure is presented, the improved subcell model is used to the analysis of shielding effectiveness of thin-walled enclosure with an aperture. The FDTD results are in very good agreement with the .experimental results.