The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis on the Characteristics of the EM Wave Absorber Using Sendust-Al(OH)3

Sendust-Al(OH)3를 이용한 전파 흡수체 특성 분석

  • Lee, Dae-Hee (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) ;
  • Song, Young-Man (Department of Radio Science & Engineering, Korea Maritime University)
  • 이대희 (한국해양대학교 전파공학과) ;
  • 김동일 (한국해양대학교 전파공학과) ;
  • 최창묵 (한국해양대학교 전파공학과) ;
  • 송영만 (한국해양대학교 전파공학과)
  • Published : 2007.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we designed and fabricated EM wave absorbers using Sendust, $Al(OH)_3$ and CPE(Chlorinated Polyethylene). We compared the absorption properties of samples containing 0 wt.%, 3 wt.%, 5 wt.%, 7 wt.% of $Al(OH)_3$. The optimized composition ratio of $Al(OH)_3$ is 5 wt.%, and the absorption property curve just has the tendency to improve at 5 wt.% of $Al(OH)_3$. And we used this characteristics to design the double-layered EM wave absorber. The double-layered EM wave absorber has thickness of 2 mm and has absorption ability more than 18.5 dB at a wireless LAN frequency band using 2.4 GHz.

본 논문에서 는 Sendust와 $Al(OH)_3$를 이용하여 전파 흡수체를 제작하였으며, 지지재로는 CPE(Chlorinated Polyethylene)를 이용하였다. 주 재료인 Sendust에 $Al(OH)_3$를 0 wt.%, 3 wt.%, 5 wt.%, 7 wt.%만큼 혼합하여 그 특성을 파악하였다. 그 결과 $Al(OH)_3$의 양이 5 wt.%일 때 전파 흡수 특성이 가장 향상되는 것을 알 수 있었다. 그리고 이 특성을 이용하여 적층형 전파 흡수체를 만들었으며, 두께 2 mm인 전파 흡수체가 무선 LAN사용 주파수인 2.4 GHz에서 전파 흡수능 18.5 dB의 특성을 보였다.

Keywords

References

  1. Dae-Hun Kim, Dong-Il Kim, Chang-Mook Choi, and Jun-Young Son, 'A study on design and fabrication of complex type em wave absorber with super wide-band characteristics', International Joural of Navigation and Port Research, vol. 30, no. 2, pp. 161-166, Mar. 2006 https://doi.org/10.5394/KINPR.2006.30.2.161
  2. Sang-Hyun Moon, Seung-Jae Shin, Jae-Man Song, Dong-Il Kim, and Ki-Man Kim, 'Development of composite a ferrite EM wave absorbers for GHz frequency', Journal of Korea Electromagnetic Engineering Soc., vol. 14, no. 12, pp. 1329-1334, Dec. 2003
  3. Chang-Mook Choi, Dong Il Kim, Dong-Han Choi, and Rui Li, 'Development of broad-band electromagnetic wave absorber for X-band sensors in double-layered type uing carbon', 12th IAIN World Congress, vol. 1, pp. 297-300, Oct. 2006
  4. Shuichi, Nitta, 'The future of EMC Technology', IEICE Trans. Commun., vol. E83-B, no. 3, Mar. 2000
  5. Stephen V. Sailiga, 'An introduction to IEEE 802.11 wireless LANs', Radio Frequency Integrated Circuits(RFIC) Symposium, 2000
  6. K. L. Chen, 'Optimization and engineering of microwave absorbers' Ph.D. Dissertation Department of Engineering Science and Mechanics, Pennsylvania State University. May 1998
  7. Y. Natio, Electromagnetic Wave Absorbers, Tokyo: New Ohm, 1987
  8. O. Hashimoto, Introduction to Wave Absorber, Tokyo: Morikita Shuppan, 1997
  9. 김동일, 전파 흡수체 공학, 대영사, 2006년 2월