Electromagnetic shielding effectiveness of gypsum-magnetite composite at x-band frequency

Mohamad Ashry, Jusoh and Yeow, Y. K. and Rodziah, Nazlan and Fahmiruddin, Esa (2019) Electromagnetic shielding effectiveness of gypsum-magnetite composite at x-band frequency. Progress in Electromagnetics Research Letters, 86. pp. 21-26. ISSN 1937-6480. (Published)

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Rapid development of the electronic industry has increased the frequency of communication devices which lead to higher intensity of electromagnetic (EM) wave production. Too much exposure of EM wave can cause harm to health besides imposing disturbances in performances of other electronic devices. Hence, this research studies the structural and electromagnetic properties of materials that can act as electromagnetic shielding material at x-band frequency. Different compositions of magnetite powder/Fe3O4 (0, 10, 20 and 100 wt.%) were prepared to be dispersed in gypsum powders to form gypsum-magnetite composites. The structural properties of composites were characterized using Scanning Electron Microscopy (SEM) to observe homogeneity of the composites. The X-Ray Diffraction (XRD) was used to determine phase composition of the gypsum-magnetite composites. Scattering parameters of reflection coefficient, S11, and transmission coefficient, S21, were measured using Vector Network Analyzer (VNA). These parameters will be used to calculate the shielding effectiveness (SE) of gypsum-magnetite composite at x-band frequency. The results show that the total SE of the gypsum-magnetite composites were increased by adding magnetite powders.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Communication device; Electromagnetic properties; Electromagnetic shielding effectiveness; Electronic industries; Properties of composites; Shielding effectiveness; Transmission coefficients; Vector network analyzers
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TP Chemical technology
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 29 Mar 2020 23:39
Last Modified: 29 Mar 2020 23:39
URI: http://umpir.ump.edu.my/id/eprint/27473
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