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http://dx.doi.org/10.5515/KJKIEES.2009.20.9.936

Resonance Characteristics of a Metallic Enclosure Having Sub-Cavity with Lossy Dielectric Materials  

Lim, Sung-Min (Center Test Laboratory, SL Corporation)
Jung, Sung-Woo (Department of Electrical Engineering, Yeungnam University)
Kim, Ki-Chai (Department of Electrical Engineering, Yeungnam University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.20, no.9, 2009 , pp. 936-942 More about this Journal
Abstract
This paper presents the delivered power and reflection coefficient in metallic shielding enclosure with a sub-cavity, which are evaluated with the method of moments, sad describes a method for controlling the resonance characteristics of the metallic cavity by putting lossy dielectric material in the sub-cavity. In this paper we introduce carbon polystyrene-foam as lossy dielectric material and observe it's effects of reduction when the dimensions of the sub-cavity and permittivity of lossy dielectric material are changed. The results show that the reduction of the electromagnetic radiation can be achieved by controlling the amount of carbon in lossy dielectric material and the dimensions of the sub-cavity. The theoretical analysis is verified by the measured delivered power.
Keywords
EMI; Reduction; Dielectric Material; Shielding Enclosure; Sub-Cavity; Cavity Resonance;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 F. Olyslager, E. Laermans, D. De Zutter, S. Criel, R. De Smedt, N. Lietaert, and A. De Clercq, 'Numerical and experimental study of the shielding effectiveness of a metallic enclosure', Electromagnetic Compatibility, IEEE Trans., vol. 41, pp. 202- 213, Aug. 1999   DOI   ScienceOn
2 T. Nakamura, S. Tokumaru, and S. Itoh, 'Reduction of SAR in human body by lossy dielectric shield',IEICE Trans., vol. J79-B-II, no. 11, pp. 941-949, Nov. 1996
3 M. Li, J. Nuebel, J. L. Drewniak, R. E. DuBroff, T. H. Hubing, and T. P. Van Doren, 'EMI from cavity modes of shielding enclosure - FDTD modeling and measurements', IEEE Trans., Electromagnetic Compatibility, vol. 42, no. 1, Feb. 2000
4 Y. Hotta, Xiaohe Li, O. Hashimoto, and S. Nitta, 'A study on suppression of cabinet resonance by means of the hybrid magnetic materials', 2001 IEEE International Symposium on, vol. 2, pp. 713-718, 2001
5 정광현, 김기채,'손실 유전체를 이용한 공동 내부의 전자계 저감 특성', 한국전자파학회논문지,14(9). pp 950-954, 2003년 9월   ScienceOn
6 M. Li, K-P. Ma, J. L. Drewniak, T. H. Hubing, and T. P. Van Doren, 'Numerical and experimental corroboration of an FDTD thin-slot model for slots near corners of shielding enclosures', IEEE Trans., Electromagnetic Compatibility, vol. 39, pp. 225-232. Aug. 1997   DOI   ScienceOn
7 W. Wallyn, F. Olyslager, E. Laermans, D. De Zutter, R. De Smedt, and N. Lietaert, 'Fast evaluation of shielding efficiency of rectangular shielding enclosures', 1999 IEEE International Symposium on, vol. 1, pp. 311-316, 1999
8 S. M. Lim, Sung-Woo Jung, and K. C. Kim, 'Resonance characterisics of a metallic enclosure having sub-cavity filled with lossy materials', Proceeding of KJJC-AP/EMC/EMT 2009, May 2009
9 D. M. Pozar, Microwave Engneering, Addison Wesley, 1990
10 R. F. Harrington, Field Computation by Moment Methods, IEEE Press, 1993