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本文首先建立手机模型和人体截短模型 ,在人机正常位置 (即右手倾斜 45°侧握手机 )下 ,运用时域有限差分法计算手机和人体模型附近的电场和磁场分布及人体模型对手机能量的吸收情况。研究发现 :加上人体模型后 ,手机附近的电场和磁场较没有人体模型时有较大程度减小 ,尤其是靠近人体模型一侧 ;人体模型内部 ,电场的减小速度较磁场明显 ;手机约有 40 .4%的幅射能量被人体模型吸收 ,其中头部吸收的电磁能量占总吸收能量的 52 .5% ,右眼比吸收率均值和脑部比吸收率峰值超出 ANSI/ IEEE C95.1 - 1 992标准规定的有关限值。
In this paper, the mobile phone model and the human body truncation model are first established. Under the normal position of the man machine (ie, the right hand is tilted at 45 °), the time-domain finite difference method is used to calculate the distribution of electric and magnetic fields near the mobile phone and human body model and the human body model Energy absorption. The results show that the electric field and the magnetic field near the cell phone decrease more when the human body model is added than when there is no human body model, especially near the human body model side; the reduction speed of the electric field is more obvious than the magnetic field inside the human body model; Forty-four percent of the radiant energy was absorbed by the human body model, in which the head absorbs 52.5% of the total absorbed energy, the right-eye specific absorption rate and the brain specific absorption rate peak exceed ANSI / IEEE C95. 1 - 1 992 standards for the relevant limits.