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

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 p...

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Veröffentlicht in:	IEEE transactions on electromagnetic compatibility 2004-08, Vol.46 (3), p.459-468
Hauptverfasser:	Marvin, A.C., Dawson, J.F., Ward, S., Dawson, L., Clegg, J., Weissenfeld, A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Apertures Applied sciences Computation Density Electromagnetic compatibility Electromagnetic interference Electromagnetic shielding Electronic equipment and fabrication. Passive components, printed wiring boards, connectics Electronics Enclosures Exact sciences and technology Information, signal and communications theory Screening Shielding Telecommunications and information theory Testing, measurement, noise and reliability
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Beschreibung
Zusammenfassung:	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.
ISSN:	0018-9375 1558-187X
DOI:	10.1109/TEMC.2004.831901