Inspecting safety level of bluetooth headset radiation in the vicinity of human head: A numerical study

Bluetooth headsets are one of the popular accessories of mobile phones because of their convenience. It is necessary to assess the impact of electromagnetic waves on the human head when a person is using a headset. In this paper different scenarios closely modeling the situations that a subject may use the headset in real life are simulated. Simulations are performed for two types of materials commonly used to manufacture the headsets, namely silicone and acetal, and for two different orientation angle of the headset on the ear. Specific Absorption Rate (SAR) and path loss values are then obtained for two different environments, the open space and inside a car. SEMCAD-X software is used as a FDTD-based simulation platform for our numerical studies. It can be seen from the results that the minimum amount of SAR is obtained by using acetal headsets in open space and sillicone headsets inside the car for an angle of 60°.