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EMI from airflow aperture arrays in shielding enclosures-experiments, FDTD, and MoM modeling

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6 Author(s)
Min Li ; Missouri Univ., Rolla, MO, USA ; Nuebel, Joe ; Drewniak, J.L. ; DuBroff, R.E.
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Aperture arrays designed to provide airflow through shielding enclosures can provide part of the coupling path from interior sources to external electromagnetic interference (EMI). In this work, radiation through aperture arrays is investigated numerically and experimentally. FDTD modeling is compared with measurements on aperture arrays in a test enclosure. The method of moments (MoM) is also utilized to study radiation from apertures and to investigate the mutual coupling between apertures in an infinite conducting plane. A simple design equation for the relation between aperture size and number and shielding effectiveness is proposed

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Electromagnetic Compatibility, IEEE Transactions on  (Volume:42 ,  Issue: 3 )