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http://dx.doi.org/10.5573/ieie.2014.51.1.211

A Study of Shielding Property of Magnetic Field for the Film Impregnated with Soft Magnetic Powder  

Park, Jong-Hyun (Department of Electronic Engineering, Kwangwoon University)
Ra, Keuk-Hwan (Department of Electronic Engineering, Kwangwoon University)
Kang, Eun-Kyun (KoR Lab. Co., Ltd.)
Kim, Jin-Woo (DONGYANG MIRAE University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.51, no.1, 2014 , pp. 211-218 More about this Journal
Abstract
In this paper the magnetic field properties of the soft magnetic alloys (Fe-Si-Cr and Fe-Ni-Cr) are studied in advance for the development of electro-magnetic shielding films, which could be used in the IT Devices (NFC, mobile phone, computer, etc.).As a result each of the selected soft magnetic alloy melts of the corresponding compositions is water-dispersed into the disk-shaped grains, which are soaked in polymer resin, and of which two types of thin film of thickness 0.1mm and 1mm are made by passing through the heating calendar roller. And the magnetic permeability and the shielding effectiveness of the polymer films containing the soft magnetic alloy grains are measured over the whole frequency bands from the low frequency to 10GHz. Before the experiments of the soft magnetic alloy, a special equation is proposed to estimate the permeability of the alloy, and the equation is verified with the pre-published data by MATLAB, and from which the most optimal compositions can be decided. And the SE(Shielding Effectiveness) of the polymer films containing the soft magnetic alloy grains is simulated by the HFSS.
Keywords
shielding films; magnetic field; water-dispersed; soft magnetic; permeability; shielding effectiveness;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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