Calculation of Shielding Effectiveness of an Enclosure with Arbitrary Shaped Apertures using Hybrid Approach

Calculation of shielding effectiveness (SE) of enclosures with apertures calculated analytically consumes very less time compared with simulating the whole structure using full wave solvers. But aperture impedance is available only for few shapes in literatures. In this paper, SE is computed using the transmission line approach combined with fullwave simulation. Impedance of arbitrary shaped aperture is calculated using full wave simulation which requires very less time and it is combined with transmission line approach to calculate SE of enclosure. This approach can be extended to enclosures with array of apertures and multiple layers of apertures. The whole enclosure with aperture is simulated, and the results are matching with SE computed using this time efficient hybrid approach.