Electromagnetic interference (EMI) from slots and apertures resulting from coupling of interior sources through enclosure cavity modes in a rectangular test enclosure is reported. EMI from a specially designed test enclosure with slots or apertures excited by interior sources was studied experimentally and with finite-difference time-domain (FDTD) modeling. The measurements and FDTD modeling agree well. The results indicate that radiation at cavity mode resonances through slots and apertures of nonresonant dimensions can be as significant as the radiation at aperture or slot resonances. The agreement between the FDTD modeling and measurements demonstrates the usefulness of FDTD for investigating aspects of shielding enclosure design such as coupling to slots and apertures and slot interactions
M. Li et al., "EMI from Cavity Modes of Shielding Enclosures-FDTD Modeling and Measurements," IEEE Transactions on Electromagnetic Compatibility, Institute of Electrical and Electronics Engineers (IEEE), Jan 2000.
The definitive version is available at http://dx.doi.org/10.1109/15.831702
Electrical and Computer Engineering
Keywords and Phrases
EMI; FDTD Modeling; Apertures; Apertures Coupling; Cavity Mode Resonances; Cavity Modes; Electromagnetic Interference; Electromagnetic Shielding; Enclosure Cavity Modes; Finite Difference Time-Domain Analysis; Finite-Difference Time-Domain; Interior Sources; Rectangular Test Enclosure; Resonance; Shielding Enclosure Design; Shielding Enclosures; Slots; Slots Coupling
International Standard Serial Number (ISSN)
Article - Journal
© 2000 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.