Development of EM Wave Absorber for Countermeasure against EM Wave Environment of 2.4 GHz Wireless LAN

Yoon, Sang Gil; Kim, Dae Hun; Park, Hoon; Kim, Dong Il

Journal of Navigation and Port Research 2009;33(3):193-197.
Published online April 30, 2009.

2.4 GHz 무선LAN 전자파 환경대책용 전파흡수체 개발

윤상길, 김대훈, 박수훈, 김동일

Development of EM Wave Absorber for Countermeasure against EM Wave Environment of 2.4 GHz Wireless LAN

Sang Gil Yoon, Dae Hun Kim, Hoon Park, Dong Il Kim

Abstract

In this paper, the EM wave absorber was designed and fabricated for improvement of Wireless LAN environment at 2.4 GHz. We fabricated several samples in different composition ratios of Sendust and CPE(Chlorinated Polyethylene). Absorption abilities were simulated in accordance with different thicknesses of the prepared absorbers and changed complex relative permittivity and permeability due to composition ratio. The mixing ratio of Sendust and CPE was searched as 80: 20 wt.% by experiments and simulation Then the EM wave absorber was fabricated and tested using the simulated data. As a result, the EM wave absorber was fabricated based on simulated data. Simulated and measured results agreed well. As a result, the developed EM wave absorber with thickness of 3.25 mm has absorption ability of 19 dB at 2.4 GHz.

Key Words: 무선LAN; Wireless LAN;EM wave absorber;Sendust;Absorption ability;IEEE 802.11b