Title :
High-frequency noise suppression in downsized circuits using magnetic granular films
Author :
Yoshida, Shigeyoshi ; Ono, Hiroshi ; Ando, Shinsuke ; Tsuda, Fumishiro ; Ito, Tetsuo ; Shimada, Yutaka ; Yamaguchi, Masahiro ; Arai, Ken-Ichi ; Ohnuma, Shigehiro ; Masumoto, Tsuyoshi
Author_Institution :
Tokin Corp., Kanagawa, Japan
fDate :
7/1/2001 12:00:00 AM
Abstract :
Noise suppression in downsized circuits utilizing magnetic granular films is demonstrated. Films of Fe-Al-O with thickness of 2 μm which exhibit very high μ" dispersion in the quasimicrowave band were found to work as noise suppressors. The films were attached onto a micro-strip line and the transmission characteristics were compared. This work is the first to verify that films with only 2 μm thickness can play a role in suppression of high frequency conduction noise in the quasimicrowave band. The results suggest a possibility of thin film noise suppressors which can be integrated into micron scale semiconductor circuits
Keywords :
aluminium compounds; integrated circuit noise; interference suppression; iron compounds; magnetic microwave devices; magnetic permeability; magnetic thin films; microstrip lines; Fe-Al-O; Fe-Al-O magnetic granular film; high-frequency noise suppression; magnetic permeability; microstrip line; quasi-microwave band; semiconductor integrated circuit; transmission characteristics; Circuit noise; Conductive films; Frequency; Magnetic circuits; Magnetic films; Magnetic noise; Semiconductor device noise; Semiconductor films; Semiconductor thin films; Thin film circuits;
Journal_Title :
Magnetics, IEEE Transactions on
