Title :
Analysis on noise suppression effect of the composite magnetic sheet for the use in near field
Author :
Ono, Hiroshi ; Takase, Yasuharu ; Yoshida, Shigeyoshi ; Hashimoto, Osamu
Author_Institution :
EMC Device Div., NEC TOKIN Corp., Miyagi, Japan
Abstract :
The noise suppression sheet made of composite magnetic material, is now widely used in so many electronic components, for countermeasuring an electromagnetic noise in quasi-microwave band. Calculation analysis has been made to evaluate the suppression effect of the sheet due to its magnetic loss in high frequency. Authors have calculated transmission and radiation characteristics of the microstrip line attached with the noise suppression sheet using FDTD method, and confirmed that the magnetic loss of the material is the dominant factor of the absorption, and also there was seldom radiation.
Keywords :
aluminium alloys; eddy current losses; electromagnetic wave absorption; electromagnetic wave transmission; ferromagnetic materials; filled polymers; finite difference time-domain analysis; interference suppression; iron alloys; magnetic noise; microstrip lines; sheet materials; silicon alloys; FDTD method; FeSiAl; absorption properties; composite magnetic material; composite magnetic sheet; electromagnetic noise; electronic components; finite difference time domain method; magnetic loss; microstrip line; noise suppression effect; noise suppression sheet; quasimicrowave band; radiation properties; seldom radiation; transmission properties; Electromagnetic interference; Electromagnetic radiation; Electronic components; Finite difference methods; Frequency; Magnetic analysis; Magnetic losses; Magnetic materials; Magnetic noise; Microstrip;
Conference_Titel :
Electromagnetic Compatibility, 2003. EMC '03. 2003 IEEE International Symposium on
Print_ISBN :
0-7803-7779-6
DOI :
10.1109/ICSMC2.2003.1429065
