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Design and Analysis of Electromagnetic Wave Absorbing Structure Using Layered Composite Plates  

오정훈 (한국과학기술원 기계공학과 항공우주공학전공)
홍창선 (한국과학기술원 기계공학과 항공우주공학전공)
오경섭 (한국과학기술원 전자공학과)
김천곤 (한국과학기술원 기계공학과 항공우주공학전공)
이동민 (국방과학연구소)
Publication Information
Composites Research / v.15, no.2, 2002 , pp. 18-23 More about this Journal
Abstract
The absorption and the interference shielding of the problems thor both commercial and military purposes. In this study, the minimization of the electromagnetic wale reflections using composite layers with different dielectric properties was performed. Dielectric constants were measured for glass/epoxy composites containing conductive carbon blacks and carbon/epoxy fabric composites. Using the measured permittivities of the composites having various carbon black contents, the optimal electromagnetic wave absorbing structure in X-band(8.2GHz-12.4GHz) was determined. The optimal multi-layered composite plates have the thickness of 2.6mm. The maximum reflection loss is -30dB at 10GHz, and the bandwidth haying the absorptivity lower than -l0dB is about 2GHz.
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Times Cited By KSCI : 3  (Citation Analysis)
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