A Study on the Improvement of EM Wave Absorption Characteristics in Paint-type EM Wave Absorbers

Paint형 전파 흡수체의 전파 흡수 성능 향상에 관한 연구

  • Che Seung-Hun (Dept. of Radio Science, National Korea Maritime University) ;
  • Kim Dong-Il (Dept. of Radio Science, National Korea Maritime University) ;
  • Choi Jeong-Hyun (Dept. of Radio Science, National Korea Maritime University)
  • 제승훈 (한국해양대학교 전파공학부) ;
  • 김동일 (한국해양대학교 전파공학부) ;
  • 최정현 (한국해양대학교 전파공학부)
  • Published : 2006.04.01

Abstract

In this research, we fabricated paint-type EM wave absorbers by using Mn-Zn, Ni-Zn, Ba, Sr Ferrite, and Sendust. To prepare the absorbers, enamel, epoxy and urethane paints were used as binders. We tested EM wave absorption of them. The band-width of EM wave absorbers coated with $Al(OH)_3$ was larger than non-coated EM wave absorbers. The fabricated EM wave absorbers show a reflection coefficient of 20 dB approximately at X-band for a 2 mm double-layer sample.

본 논문에서 Sendust, Mn-Zn, Ni-Zn, Ba, Sr Ferrite를 사용하여 페인트형 흡수체를 제작하였다. 지지재로서는 enamel, epoxy, urethane 페인트들을 사용하여 각각 흡수능을 측정하였다. 그리고 $Al(OH)_3$으로 코팅한 흡수체의 대역폭은 코팅을 하지 않은 것보다 더 넓어지는 것을 알 수 있다. 또 2 mm 두께의 적층형 흡수체는 X-band에서 대략 20 dB의 흡수능을 보여준다.

References

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  3. Dong Il Kim, Su Joung Kim, and Jae Man Song, 'Dependence of electronmagnetic wave absorption properites on binders', Journal of The Korean Physical Society, vol. 43, no. 2, pp. 269-272, 2003