A proposed new definition and measurement of the shielding effect of equipment enclosures

A.C. Marvin, J.F. Dawson, Linda Dawson, J. Clegg, A. Weissenfeld, S. Ward

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This paper describes the rationale behind a new proposed measurement of the screening effect of an equipment enclosure that takes into account the contents of the enclosure. The method uses a set of representative contents for enclosures. The representative contents are equipped with surface field probes to measure the power entering the contents. The ratio of this power to the incident power density is used to derive a quantity with the dimensions of area, termed here the shielding aperture. The measurement technique is described and examples of measurements are given along with computed comparisons with the conventional shielding effectiveness of the enclosures used.
Original languageEnglish
Pages (from-to)459-468
Number of pages9
JournalIEEE Transactions on Electromagnetic Compatibility
Issue number3
Publication statusPublished - Aug 2004


  • screening effectiveness measurements
  • shielding effectiveness (SE) measurements

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