Shielding Effectiveness Characterization of Metallic Rectangular Cascaded Enclosures

This paper presents a generalized model to investigate the wideband shielding performance of metallic rectangular cascaded enclosures with multiple rectangular apertures. The mathematical methodology is based on the integral equation technique combined with the method of moments, by which all unknown aperture fields are solved according to a set of linear algebraic equations of infinite order. Numerical computations are performed to show frequency- and geometry-dependent shielding effectiveness, especially of double- and triple-section cascaded enclosures, respectively. It is found that using metallic cascaded enclosures, high shielding performance can be achieved.