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Material and geometry factors in joint design of electronic equipment to minimize electromagnetic interference
Author(s) -
Mottahed Behzad D.,
Manoochehri Souran
Publication year - 1997
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19970531)64:9<1667::aid-app2>3.0.co;2-d
Subject(s) - electromagnetic shielding , joint (building) , electromagnetic interference , enclosure , materials science , interference (communication) , aperture (computer memory) , composite material , mechanical engineering , structural engineering , computer science , engineering , telecommunications , channel (broadcasting)
Reducing electromagnetic interference in electronic equipments is of great importance. This is normally accomplished by increasing the shielding effectiveness of the enclosure. In this study, shielding effectiveness is examined against enclosure material, joint geometry, and operating frequency. An experimental apparatus is designed and manufactured to aid in finding the suitable joint configurations and materials with high shielding effectiveness. Three groups of material, namely, metallic, filled polymers, and metalized filled polymers, are investigated. In addition to the choices of material, effect of joint configurations on shielding behavior are examined. Based on the experimental results, empirical relations are developed that relate shielding effectiveness to effective length, shape factor, and aperture dimensions of the joint structure. Finally, the best material and joint geometry among the investigated cases are presented. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 1667–1679, 1997