Shielding Effectiveness (SE) Measurement Techniques

There is considerable interest in both the military and commercial sectors in the determination and knowledge of the Shielding Effectiveness (SE) of an enclosure, material, cable, surface, or structure. Since the shapes of such vary, since materials of construction may not be homogeneous and isotropic, since the frequency ranges of interest span the electromagnetic spectrum, and since the orientations of the electric (E) and magnetic (H) field strength vectors all vary during both measurement and application, such variations cause confusion and a lack of repeatability of measured values. Thus, there is substantial interest in and a need for improved SE measurement methodology.