Shield effectiveness of a metallic box with apertures: electromagnetic field configuration

Author

Mathias, Marcio A. ; Janiszewski, Jorge M.

Author_Institution

Maui Eng. Sch., Maua Inst. of Technol., Sao Caetano Do Sul, Brazil

Volume

1

fYear

2004

fDate

20-25 June 2004

Firstpage

383

Abstract

Metallic boxes are used to protect electronic equipment from spurious electromagnetic interference. In many situations, these boxes present apertures that reduce their shield effectiveness, allowing undesirable electromagnetic field coupling to the interior of the box. The knowledge of the electromagnetic field coupling inside a metallic enclosure is relevant information for hardware designers. A TLM-based procedure was developed to obtain the electromagnetic field maps for shield effectiveness evaluation at every point of interest.

Keywords

computational electromagnetics; coupled circuits; electromagnetic interference; electromagnetic shielding; electronics packaging; transmission line matrix methods; EM field configuration; EM field maps; EMI; TLM-based procedure; box apertures; box interior electromagnetic field coupling; electromagnetic interference; electromagnetic susceptibility; metallic box shield effectiveness; metallic enclosure; Apertures; Circuit analysis computing; Electromagnetic coupling; Electromagnetic fields; Electromagnetic interference; Electromagnetic modeling; Electromagnetic scattering; Electronic equipment; Magnetic field measurement; Magnetic shielding;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2004. IEEE

Print_ISBN

0-7803-8302-8

Type

conf

DOI

10.1109/APS.2004.1329654

Filename

1329654