A Numerical Study on the Interaction Between Different Position of Cellular Headsets and a Human Head
关键词:
Bluetooth, electromagnetic field, FDTD, headset, human head, SEMCAD摘要
In this paper the interaction between a human head exposed to a bluetooth-based cellular headset in different positions is studied. The exposure to the electromagnetic fields is a concern when people use these devices. The interaction of human head and bluetooth mobile headsets has not been considered in related standards. In this research three installed positions for the headset and two scenarios for the user are defined. In the first scenario the user is in free space and in the second scenario the user is in a car. For both scenarios path loss, antenna gain, total isotropic sensitivity, and specific absorption rate values for three positions of the headset on the head are obtained. SEMCAD X software is used as an FDTD-based simulation platform for our numerical studies. The result of our study can help manufacturers to consider the compatibility of these devices with safety guidelines of electromagnetic exposure specified by relevant institutes. Designers of wireless devices can use results of this study to design new headsets that can be used in an appropriate position while the performance of the device is less affected by the human head and the environment.
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参考
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