Abstract: The interaction of a λ／4 monopole antenna handset with a heterogeneous electromagnetic block human model is simulated by using finite-difference timedomain (FDTD) method. The human model is a cube of 0.655 cm, and the specific absorption rate(SAR) of the model in 7 different conditions is calculated at frequency 700 MHz. Several importantconclusions and proposal are given after analysing the calculated results and comparing them with the Hygienic Standard for Electromagnetic Radiation of China and USA.

Key words: FDTD method, handset, human model, specific absorption rate

摘要： 基于网格边长为0.655cm的人体非均匀块状模型，应用时域有限差分法在700MHz计算了 λ ／4单极天线手机模型在7种不同使用方式下对人体的作用，得到了人体比吸收率(SAR)分布。分析计算结果并与我国和美国的电磁辐射卫生标准比较，得出结论和建议。

关键词: 时域有限差分法, 手机, 人体模型, 比吸收率