Abstract
This paper presents a new design of PIFA antenna used for mobile phones with a very low specific absorption rate (SAR). Our proposed antenna structure is based on reshaping the ground plane by adding metallic walls filled with an absorbing liquid in order to limit the distribution of the surface current existing on the antenna. This will lead to reducing the electromagnetic radiation toward the human head and therefore the SAR, to attain less than 0.7 W/kg averaged over 10 g in presence of the human head. The effect of the tilting positions of the phone with respect to the human head and the rotation angle of the user’s hand on the SAR is also investigated. Simulation results show that the SAR can be reduced by more than 85% when the mobile phone is tilted upwards by 20° with respect to the horizon. Moreover, the presence of the hand reduces the SAR by 35%. However, the tilt position of the human hand slightly affects the SAR distribution on the human head.
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Serhal, D., Nasser, N., Rammal, M., Vaudon, P. (2020). Impact of Phone and Hand Position on SAR Distribution Using Liquid-Based PIFA Antenna. In: Bouhlel, M., Rovetta, S. (eds) Proceedings of the 8th International Conference on Sciences of Electronics, Technologies of Information and Telecommunications (SETIT’18), Vol.2. SETIT 2018. Smart Innovation, Systems and Technologies, vol 147. Springer, Cham. https://doi.org/10.1007/978-3-030-21009-0_30
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DOI: https://doi.org/10.1007/978-3-030-21009-0_30
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