Analisis Material Shielding untuk Mitigasi Emisi Radiasi pada Mobile Phone

Abstract

The development of the electronic device industry covers a variety of fields and its use has become a human lifestyle. Almost all electronic devices produce Electromagnetic Interference (EMI). The result is emission of electromagnetic radiation which causes damage to device operations and human health. To mitigate EMI radiation produced by electronic devices, namely the use of shielding. The material's ability to reduce electromagnetic fields with shields is called shielding effectiveness. Every material used as shielding has different characteristics and capabilities to mitigate EMI. Therefore, not all shielding materials can properly mitigate EMI radiation of electronic devices. In this study shielding effectiveness measurements used loops because the test method was cheap and accurate, the materials used were copper, aluminum, aluminum foil, EMI absorber, flexshield ferritte, PVC and ferrite which were applied to Nokia mobile phones. From the results of the study, it was found that PVC and ferrite fabrication materials had the highest shielding effectiveness of 13 dB, for copper conductors the shielding effectiveness was up to 11 dB. From the wide variation of shielding material, it was found that material with an area of ​​6x6 cm was able to produce the greatest attenuation compared to the width of other materials. When applied to ferrite flexshield and EMI absorber on a mobile phone, the material is able to reduce radiation emissions without causing interference with sound quality during a call and a decrease in signal strength received.  Keywords: Radiation Emission, Shielding Material, Shielding effectiveness, Mobile phone, Loop