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http://dx.doi.org/10.5207/JIEIE.2014.28.2.048

A Study on Shield Effect of Shield Case using SiFe Sheet  

Shin, Dong-Gyu (Dept. of Electrical Eng. Pukyong National University)
Kim, Young-Hak (Dept. of Electrical Eng. Pukyong National University)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.28, no.2, 2014 , pp. 48-53 More about this Journal
Abstract
The shield effect of 4 layered shield case was investigated in this paper. The material of the case was non-oriented SiFe sheet with a thickness of 0.5mm. The size of the case was 100mm wide, 100mm high and 300mm long. Relative permeability of SiFe sheet was needed to calculate shield effect. It was obtained from the measurement by a ferrite yoke and from the calculation by eddy current FEM analysis. Three configurations were used to connect both ends of SiFe sheet. First one is a connection by double-welded butt. Second one is to put the sheet the same material above the confronted both ends of the sheet to avoid a leakage magnetic flux. The last one is ideally without any connection. The shield effect of the second one agreed well with the last one and showed the shield effect of -40dB.
Keywords
Shield Case; Shielding Effect; SiFe Sheet; Ferrite-Yoke; Permeability;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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