Title :
Operating mechanism of RF electromagnetic noise suppression sheets
Author :
Maruta, K. ; Yamaguchi, M. ; Ono, H.
Author_Institution :
Graduate Sch. of Eng., Tohoku Univ., Sendai, Japan
Abstract :
Noise suppression sheets (NSS) are made of polymer-embedded magnetic flakes and widely used to suppress electromagnetic noise of electronic devices by means of shielding magnetic field and dissipating the noise power as ferromagnetic resonance losses that appear only at GHz frequency range. In spite of the good practical performance, it remains unclear how the NSS really act on the noise and inacts over signal. This paper discusses the mechanism of inter- and intra-decoupling noise suppression based on 3D FEM electromagnetic field simulation and experiments.
Keywords :
computational electromagnetics; electromagnetic interference; electromagnetic shielding; ferromagnetic resonance; finite element analysis; interference suppression; 3D FEM electromagnetic field simulation; RF electromagnetic noise suppression sheets; electronic devices; ferromagnetic resonance losses; interdecoupling noise suppression; intradecoupling noise suppression; magnetic field shielding; noise power dissipation; polymer-embedded magnetic flakes; Electromagnetic devices; Electromagnetic fields; Electromagnetic interference; Electromagnetic shielding; Magnetic devices; Magnetic noise; Magnetic resonance; Magnetic shielding; Polymers; Radio frequency;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1463982
