Analysis on shielding effectiveness of aperture arrays with different shapes

It is important to study the shielding effectiveness to reduce the electromagnetic interference and to protect electronic components. In this paper the shielding effectiveness of aperture arrays on different shapes is calculated and analyzed. The effects of the spaces between the adjacent apertures are analyzed. The results show that the penetration coefficient (PC) of a circle aperture array is the smallest, the one of a square aperture array is medium, and the one of a honey aperture array is the biggest, but their spectrums are almost the same. While for a dumbbell aperture array, because the contour shape is very different with the former aperture arrays, its magnetic current distribution is very different with the other’s. Thus the PC of a dumbbell aperture array is bigger than the o