Analysis, design, and characterization of ferrite EMI suppressors

In this paper design, modeling and characterization of single and double coils, which consist of conductive layer embedded in the soft ferrite material, are described. These surface-mount components, comprising of a cofired multilayered ferrite and coil, have been developed in the ceramic coprocessi...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2006-02, Vol.42 (2), p.270-277
Main Authors: Damnjanovic, M., Stojanovic, G., Desnica, V., Zivanov, L., Raghavendra, R., Bellew, P., Mcloughlin, N.
Format: Article
Language:English
Subjects:
Analytical models
Ceramics
Coils
Conducting materials
Cross-disciplinary physics: materials science
rheology
Design engineering
Electromagnetic interference
EMI suppressor
Exact sciences and technology
Ferrite
Ferrites
Frequency
high-frequency characteristics
impedance and inductance calculation
Inductors
Magnetism
Materials science
Mathematical models
Meters
Other topics in materials science
Permeability
Physics
Predictive models
single and double coils
Suppressors
Surface-mount technology
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Summary:In this paper design, modeling and characterization of single and double coils, which consist of conductive layer embedded in the soft ferrite material, are described. These surface-mount components, comprising of a cofired multilayered ferrite and coil, have been developed in the ceramic coprocessing technology. A simple analytical model of proposed structures is presented. This model is very suitable for circuit simulations and for prediction of frequency characteristics of considered inductors. The inductance and impedance of coils embedded in low permeability or high permeability ferrite material are calculated and compared. Also, these suppressors were experimentally tested in the frequency range 1 MHz-3 GHz using an Agilent 4287 A RF LCR meter. The calculated results were in good agreement with the measured ones.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2005.860485