Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1329654
