volume | PIER Journals

2019-07-23

Electromagnetic Shielding Effectiveness of Gypsum-Magnetite Composite at X-Band Frequency

Mohamad Ashry Jusoh,

Dr. Mohamad Ashry Jusoh

Faculty of Industrial Science & Technology

Universiti Malaysia Pahang

Malaysia

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You Kok Yeow,

Dr. You Kok Yeow

Communication Engineering Department, Faculty Electrical E

University Teknologi Malaysia

Malaysia

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Rodziah Nazlan,

Dr. Rodziah Nazlan

Faculty of Industrial Sciences & Technology

Universiti Malaysia Pahang

Malaysia

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Fahmiruddin Esa

Dr. Fahmiruddin Esa

Faculty of Applied Sciences and Technology, Pagoh Higher Education Hub

Universiti Tun Hussein Onn Malaysia

Malaysia

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Progress In Electromagnetics Research Letters, Vol. 86, 21-26, 2019

doi:10.2528/PIERL19051401

Abstract

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.

Citation

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Mohamad Ashry Jusoh, You Kok Yeow, Rodziah Nazlan, and Fahmiruddin Esa, "Electromagnetic Shielding Effectiveness of Gypsum-Magnetite Composite at X-Band Frequency," Progress In Electromagnetics Research Letters, Vol. 86, 21-26, 2019.
doi:10.2528/PIERL19051401

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