Applicability evaluation of fast algorithm for shielding effectiveness prediction of metallic enclosures with apertures

The applicability of four different fast algorithms for shielding effectiveness (SE) prediction of rectangular metallic enclosures with apertures is evaluated, in order to choose appropriate algorithm for practical engineering problem. The SE values of 864 metallic enclosures with different shape, size and apertures are calculated using these four algorithms and compared to FDTD results. According to the variation of absolute error and curvilinear correlation coefficient in terms of dimension sizes of cavity and aperture, the applicable numbers of modes of these four different fast algorithms for shielding effectiveness (SE) prediction is determined eventually. The results show that Modal-MOM has the largest applicable number of modes, ILCM follows, and TLECM has the least applicable number of modes. These results provide a guidance for practical engineering applications.