Specific absorption rate evaluation for people using wireless communication device in vehicle

In this paper, a specific absorption rate (SAR) evaluation on human exposure from wireless communication devices inside a vehicle is investigated. A finite-difference time-domain method (FDTD) is used for simulating the electromagnetic field distribution inside the vehicle. Results have shown that the maximum SAR induced for a mobile phone user in the vehicle is only increased by 5% when compared to free space. Results have also indicated that other passengers in the vehicle are also inducing various levels of the SAR values in their bodies. The induced SAR values can be as high as about 40% of the maximum SAR value induced in the mobile phone user.