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http://dx.doi.org/10.5394/KINPR.2006.30.2.161

A Study on Design and Fabrication of Complex Type EM Wave Absorber with Super Wide-band Characteristics  

Kim Dae-Hun (Department of Radio Science & Engineering, Korea Maritime University)
Kim Dong-Il (Department of Radio Science & Engineering, Korea Maritime University)
Choi Chang-Mook (Department of Radio Science & Engineering, Korea Maritime University)
Son Jun-Young (Department of Radio Science & Engineering, Korea Maritime University)
Publication Information
Journal of Navigation and Port Research / v.30, no.2, 2006 , pp. 161-166 More about this Journal
Abstract
In order to construct an Anechoic Chamber satisfying international standards for EMI testing, it has been recognized that the absorption characteristics of the EM wave absorber must be higher than 20 dB over the frequency band from 30 MHz to 18 GHz. In this paper, an EM wave absorber with super wide-band frequency characteristics was proposed and designed in order to satisfy the above requirements by using the Equivalent Material Constant Method(EMCM) and Finite Difference Time Domain(FDTD). The proposed absorber is to attach a pyramidal absorber onto a hemisphere-type absorber on a cutting cone-shaped ferrite. As a result, the proposed absorber has absorption characteristics higher than 20 dB over the frequency band from 30 MHz to more than 20 GHz.
Keywords
Anechoic chamber; EM wave absorber; Absorption characteristics; Hemisphere type; Complex type;
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  • Reference
1 Dennis M. Sullivan. (2000) 'Electromagnetic Simulation Using the FDTD method', IEEE Press series on RF and Microwave Technology
2 Kim, D. I. Kim, S. T., Park, J. Y. and Chung, S. M., (1995), 'A comparative study on measuring methods of absorption characteristics for electromagnetic wave absorber using Time Domain Method', Proceeclings of Korea EMC/EMI Society, vol. 6, pp. 11-18
3 Kim, D. I., Michiharu Takahashi, Hiroki Anzai, Sang Y. J..(1996), 'Electromagnetic wave absorber with wideband frequency characteristics using exponentially tapered ferrite', IEEE Trans. On electromagnetic compatibility, vol. 38, no. 2, pp. 173-177   DOI   ScienceOn
4 Naito, Y. et al. (1993), 'Characteristics of grid ferrite electromagnetic wave absorber', IEICE of Japan, vol. J76-B-II, No. 11, pp. 898-905
5 Son, J. Y., Kim, D. I.,(2003), 'A study on absorption characteristics of Hemisphere type on cutting cone shaped absorber for obliquely incident EM waves', 2003 Asia-Pacific Microwave Conference, Sheraton Walkerhill Hotel, Seoul, Korea, Vol. 01, pp. 53-56
6 Christoper L. Holloway, Ronald R. Delyser, Robert F. German, Paul Mckenna, and Motohisa Kanda. (1997), 'Comparison of Electromagnetic Absorber Used in Anechoic and Semi-Anechoic Chamber for Emissions and Immunity Testing of Digital Device', IEEE Trans. on Electromagnetic Compatibility, vol. 39, no. 1, pp. 33-47   DOI   ScienceOn
7 CISPR11. (1997), 'ISM raclio frequency equipment electromagnetic clisturbance characteristics limits & methods of measurement', IEC, pp.12-15