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

Volume

2

fYear

2003

fDate

11-16 May 2003

Firstpage

938

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2003. EMC '03. 2003 IEEE International Symposium on

Print_ISBN

0-7803-7779-6

Type

conf

DOI

10.1109/ICSMC2.2003.1429065

Filename

1429065