基于时域有限差分法的手机辐射计算分析

Mobilephone Radiation Calculation Based on Finite Difference Time Domain Method

采用时域有限差分法,构建了手机与人体相互作用的模型.在频率为1 800 MHz下计算了手机上涂敷碳纳米管复合物吸波材料前后对电磁辐射的比吸收率SAR,并由此得到天线辐射方向图.计算结果表明:手机上涂覆碳纳米管CNTs复合物吸波材料可以降低手机比吸收率值,对天线辐射方向图影响很小.

Using finite difference time domain（FDTD）method, the model of interaction between mobilephone and human body is established. The values of SAR absorbed by human body and radiation pattern of the antenna are calculated under the irradiation of a mobilephone before and after coating carbon nanotubes （CNTs） composites at 1 800 MHz. The results shows that the use of CNTs composites absorbing material on the mobilephone can obviously reduce SAR values and the antenna performance is less affected.