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.
M. Li et al., "EMI from Airflow Aperture Arrays in Shielding Enclosures-Experiments, FDTD, and MoM Modeling," IEEE Transactions on Electromagnetic Compatibility, vol. 42, no. 3, pp. 265-275, Institute of Electrical and Electronics Engineers (IEEE), Aug 2000.
The definitive version is available at https://doi.org/10.1109/15.865333
Electrical and Computer Engineering
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
EM Radiation; EMI; FDTD; MoM Modeling; Airflow Aperture Arrays; Aperture Number; Aperture Size; Coupling Path; Design Equation; Electromagnetic Coupling; Electromagnetic Fields; Electromagnetic Interference; Electromagnetic Shielding; Experiments; Finite Difference Time-Domain Analysis; Infinite Conducting Plane; Integral Equation; Integral Equations; Measurements; Method of Moments; Mutual Coupling; Packaging; Radiated Fields; Shielding Effectiveness; Shielding Enclosures; Test Enclosure
International Standard Serial Number (ISSN)
Article - Journal
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