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Development of Electromagnetic Wave Absorbers far Mobile Phone Using Sendust  

Choi Jung-Hyun (Dept. of Radio Sciences & Eng., Korea Maritime University)
Kim Dong-Il (Dept. of Radio Sciences & Eng., Korea Maritime University)
Song Jae-Man (Research Institute of Industrial Technology, Korea Maritime University)
Jung Jae-Hyun (Dept. of Radio Sciences & Eng., Korea Maritime University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.16, no.8, 2005 , pp. 842-847 More about this Journal
Abstract
In this paper, we fabricated sheet-type EM wave absorbers for mobile phones by using sendusts and tested EM wave absorption of it. The band-width of EM wave absorbers coated with $Al_2O_3$ were larger than non-coated EM wave absorbers. Particle size decreased with increasing milling time, which made the result of increasing of EM wave absorption. The fabricated EM wave absorbers show a reflection coefficient 17.4 dB at 946 MHz for a 4 mm sample and 5 dB at 1.8 GHz for a 1 mm sample.
Keywords
Absorber; Sendust; Mobile Phone; Particle Size;
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  • Reference
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