EMI from apertures at enclosure cavity mode resonances

Author

Li, M. ; Ji, Y. ; Radu, S. ; Nuebel, J. ; Cui, W. ; Drewniak, J.L. ; Hubing, T.H. ; VanDoren, T.P.

Author_Institution

Dept. of Electr. Eng., Missouri Univ., Rolla, MO, USA

fYear

1997

fDate

18-22 Aug 1997

Firstpage

183

Lastpage

187

Abstract

EMI from slots and apertures resulting from coupling of interior sources through enclosure cavity modes in a Sun S-1000 workstation was investigated. The excitation of a specially designed rectangular enclosure with a slot was also studied experimentally and with finite-difference time-domain (FDTD) simulations. The radiated power results for both the S-1000 and simple rectangular enclosure indicate that radiation at cavity mode resonance frequencies through slots and apertures can be as significant as at aperture or slot resonances. A decrease of the radiation through the slots and apertures can be achieved by employing a lossy material in the enclosure

Keywords

electromagnetic interference; electromagnetic shielding; finite difference time-domain analysis; workstations; EMI; Sun S-1000 workstation; aperture resonance; apertures; enclosure cavity modes; finite-difference time-domain simulation; interior sources coupling; radiated power; rectangular enclosure; slot resonance; slots; Apertures; Dielectric materials; Electromagnetic compatibility; Electromagnetic interference; Finite difference methods; Frequency; Resonance; Scattering parameters; Sun; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 1997. IEEE 1997 International Symposium on

Conference_Location

Austin, TX

Print_ISBN

0-7803-4140-6

Type

conf

DOI

10.1109/ISEMC.1997.667565

Filename

667565