Abstract
We demonstrate the applicability of magnetic metal thin films to an electromagnetic interference (EMI) noise filter. We examine the magnetic loss of three kinds of thin films consisting of roll-pressed Ni-Fe, sputtered Ni-Fe and roll-cooled amorphous Co-Fe-Si-B. Impedance measurement reveals that the magnetic loss of these metals becomes higher as their permeability increases. The noise reduction characteristic of thin film filters is evaluated by the S-parameter measurement technique. We can obtain the same noise reduction as a conventional ferrite filter with a thin film filter of 1/30-1/7 its volume. These results indicate that the use of magnetic metal thin films is advantageous with regard to minimizing noise filter size.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
