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http://dx.doi.org/10.5515/KJKIEES.2008.19.2.244

Development of EM Wave Absorber for Suppression Noise from PCB Using Sendust and Mn-Zn Ferrite  

Yoon, Sang-Gil (Department of Radio Communication Engineering, Korea Maritime University)
Kim, Dong-Il (Department of Radio Communication Engineering, Korea Maritime University)
Song, Young-Man (Department of Radio Communication Engineering, Korea Maritime University)
Park, Soo-Hoon (Department of Radio Communication Engineering, Korea Maritime University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.19, no.2, 2008 , pp. 244-249 More about this Journal
Abstract
In this paper, we designed and fabricated the EM wave absorber consists of Sendust and Mn-Zn ferrite for suppressing EM wave noise from PCB in ISM(Industrial, Scientific and Medical) band of 2.4 GHz. We fabricated several samples in different ratios of Sendust to Mn-Zn ferrite with CPE(Chlorinated Ploy-ethylene) as binder and confirmed that optimum composition ratio of absorbing materials was Sendust. Mn-Zn ferrite : CPE=70:5:20 wt.%. The absorbing abilities were simulated according to different thickness of EM wave absorber as the function of material constants calculated by measured data. Measured absorption ability was analyzed and compared with simulated result. The simulated result agree well with the measured ones. As a result, the developed EM wave absorber with thickness of 0.85 mm has absorption ability of 5.4 dB at 2.4 GHz and over 3 dB in frequency rage of 1.4$\sim$4.1 GHz.
Keywords
PCB; EMC; ISM Band; EM Wave Absorber; Sendust; Mn-Zn Ferrite;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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