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http://dx.doi.org/10.5394/KINPR.2007.31.8.671

Development of the EM Wave Absorber for ETC of ITS  

Song, Young-Man (Graduate school of National Korea Maritime University)
Choi, Chang-Mook (Graduate school of National Korea Maritime University)
Lee, Dae-Hee (Graduate school of National Korea Maritime University)
Kim, Dong-Il (Department of Radio Science and Engineering, National Korea Maritime University)
Publication Information
Journal of Navigation and Port Research / v.31, no.8, 2007 , pp. 671-674 More about this Journal
Abstract
In this paper, the EM wave absorber was designed and fabricated for ETC system, because ETC system has some problems including signal error and system-to-system interference. We fabricated some samples in different composition ratio of MnZn-ferrite, Carbon and CPE, confirmed that optimum composition ratio of Mn2n-ferrite, Carbon, CPE was 40 : 15 : 45 wt%. Complex relative permittivity and complex relative permeability was calculated by the measured data. And absorption abilities were simulated according to different thickness of the EM wave absorbers using complex relative permittivity and permeability. The EM wave absorber was fabricated based on simulated data Simulated and measured values agree well. As a result, the developed EM wave absorber has a thickness of 3.38 mm and absorption ability over 20 dB at 5.8 GHz.
Keywords
EM wave absorber; EM Wave Absorption; MnZn-Ferrite; Carbon; ETC;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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