DocumentCode :
1906993
Title :
Utilizing overlooked characteristics of ferrites for improved printed circuit board EMI suppression
Author :
Hill, Lee ; Bruce, Jeff
Author_Institution :
Silent Solutions LLC, Amherst, NH
fYear :
2006
fDate :
Feb. 27 2006-March 3 2006
Firstpage :
383
Lastpage :
386
Abstract :
While nickel-zinc composition soft ferrites are routinely used for PCB EMI suppression, the consequences of DC and low frequency AC bias on a device´s high frequency impedance has not been widely discussed in the EMC and magnetic component literature. Virtually all EMI suppression applications in DC and AC power filter circuits place two-terminal ferrites under bias. This paper discusses the impact of low frequency bias on high frequency device performance and suggests several methods to address these impacts while improving the performance of EMI filters containing nickel-zinc ferrites
Keywords :
electromagnetic interference; ferrites; interference suppression; nickel alloys; printed circuits; zinc alloys; AC power filter circuits; DC power filter circuits; EMI suppression; PCB; high frequency device; nickel-zinc composition soft ferrites; printed circuit board; Electromagnetic compatibility; Electromagnetic interference; Ferrite devices; Frequency; Impedance measurement; Magnetic separation; Power filters; Printed circuits; RLC circuits; Surface impedance;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electromagnetic Compatibility, 2006. EMC-Zurich 2006. 17th International Zurich Symposium on
Conference_Location :
Singapore
Print_ISBN :
3-9522990-3-0
Type :
conf
DOI :
10.1109/EMCZUR.2006.214951
Filename :
1629641
Link To Document :
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