Abstract
A new analytical model for the calculation of the shielding effectiveness of multilayer infinite metal meshes is proposed. This model is based on the previously developed one for single- and double-layer metal shielding grids. It enables accurate and fast calculations of the shielding effectiveness of multilayer metal meshes with different air interlayers in a wide frequency range. The proposed model considers the ratio of the wire diameter to the aperture size and the layer interspacing. The model is validated by comparison of the results of calculations with the HFSS simulation results. The model validity in a wide frequency range as well as its calculation speed far bigger than that for HFSS is demonstrated. The results of calculations show that the shielding effectiveness of metal meshes can be effectively improved by increasing the distance between the mesh layers and the ratio of the wire diameter to the aperture size.
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