Publications Details
Chassis-Integrated Mode Stirring for Shielding Effectiveness Variability Characterization
Characterizing shielding effectiveness (SE) of enclosures is important in aerospace, military, and consumer applications. Direct SE measurement of an enclosure or chassis may be considered an exact characterization, but there are several sources of possible variability in such measurements, e.g., mechanical tolerances, the absence of components during test that exist in a final assembly, movement of components and cables, and perturbations due to probes and associated cabling. In [1] , internal stirrers were investigated as a way to sample the variation of SE of small enclosures when populated with random metallic objects. Here, we explore this idea as a way to quantify variability and sensitivity of an SE measurement, not only indicating the uncertainty of the SE measurement, but also delineating frequency ranges where either deterministic or statistical simulations should be applied.