EMI from cavity modes of shielding enclosures-FDTD modeling and measurements

Author

Li, Min ; Nuebel, Joe ; Drewniak, James L. ; Dubroff, Richard E. ; Hubing, Todd H. ; Van Doren, Thomas P.

Author_Institution

Eng. Res. Center, Lucent Technol., Princeton, NJ, USA

Volume

42

Issue

1

fYear

2000

fDate

2/1/2000 12:00:00 AM

Firstpage

29

Lastpage

38

Abstract

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

Keywords

electromagnetic interference; electromagnetic shielding; finite difference time-domain analysis; resonance; EMI; FDTD modeling; apertures; apertures coupling; cavity mode resonances; cavity modes; electromagnetic interference; enclosure cavity modes; finite-difference time-domain; interior sources; rectangular test enclosure; shielding enclosure design; shielding enclosures; slots; slots coupling; Apertures; Cable shielding; Connectors; Electromagnetic interference; Electromagnetic radiation; Finite difference methods; Helium; Resonance; Testing; Time domain analysis;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/15.831702

Filename

831702