确定无线通信设备在人体中的峰值空间平均比吸收率（SAR） 30 MHz 至 6 GHz 第1部分：使用时域有限差分（FDTD）方法进行 SAR 计算的一般要求（编辑

IEC/IEEE 62704-1:2017(E) defines the methodology for the application of the finite-difference time domain (FDTD) technique when used for determining the peak spatial-average specific absorption rate (SAR) in the human body exposed to wireless communication devices with known uncertainty. It defines methods to validate the numerical model of the device under test (DUT) and to assess its uncertainty when used in SAR simulations. Moreover, it defines procedures to determine the peak spatial-average SAR in a cubical volume and to validate the correct implementation of the FDTD simulation software. The applicable frequency range is 30 MHz to 6 GHz. This document does not recommend specific SAR limits since these are found elsewhere, for example, in the guidelines published by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) [1] or in IEEE Std C95.1 [3]. Key words: Spatial-Average Specific Absorption Rate, Finite-Difference Time-Domain, Human Body