ANALYSIS TYPE / 03
enclosure · aperture analysis · gasket design
Overview
Analysing shielding effectiveness of electronic enclosures — evaluating aperture leakage from vents, seams, connectors, and display openings, and quantifying how structural shielding reduces both radiated emission and susceptibility to external fields.
Deliverables
Key Aspects
Computing electromagnetic leakage through enclosure apertures — cooling vents, cable entries, display cutouts, and seam gaps — identifying which openings dominate the shielding effectiveness degradation.
Identifying resonant cavity modes within the enclosure that amplify internal fields at specific frequencies, creating emission peaks or susceptibility hotspots on sensitive circuits inside.
Evaluating the effectiveness of conductive gaskets, finger stock, and paint treatments at enclosure seams and connector interfaces — computing required contact resistance and gasket compression for target shielding levels.
Analysing PCB-mounted shielding can effectiveness for isolating high-frequency circuits from adjacent sensitive areas within the same enclosure, including aperture effects for programming access holes.
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