A study of EMI suppression characteristics of ferrite cores

Junichiro Urabe and Katsumi Fujii and Armad Mukifza Harun and Yasushi Matsumoto and Akira Sugiura (2006) A study of EMI suppression characteristics of ferrite cores. In: 2006 17th International Zurich Symposium on Electromagnetic Compatibility, 27 February-3 March 2006, Singapore.

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Abstract

Small-sized ferrite cores have commonly been attached to the mains and peripheral cables of electronic devices, but it is hardly known how effectively the cores can suppress EMI currents and how to use the cores in practical application. Hence, theoretical and experimental analyses are carried out to develop an appropriate method for evaluating the EMI suppression capability of the ferrite cores used in practical situations. First, a transmission line type measuring system is proposed for simulating the compliance test setup for the conducted emission. Then, theoretical expressions are derived to evaluate the EMI suppression characteristics of a ferrite core. In addition, to prove the validity of those theoretical equations, experimental studies are made using a simulated EUT and two actual EUT available in the market, that is, a desktop PC and a microwave oven.

Item Type: Conference or Workshop Item (Paper)
Keyword: EMI , EMI suppression , Ferrite core , Insertion loss , Reflection coefficient
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1-9971 Electrical engineering. Electronics. Nuclear engineering > TK7800-8360 Electronics
Department: FACULTY > Faculty of Engineering
Depositing User: SAFRUDIN BIN DARUN -
Date Deposited: 20 Sep 2021 09:03
Last Modified: 20 Sep 2021 09:03
URI: https://eprints.ums.edu.my/id/eprint/30278

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