IEC/IEEE 62704-4:20 20描述了有限元方法（FEM）的概念、技术和局限性，并规定了当用于确定体模或解剖模型中的峰值空间平均比吸收率（psSAR）时，FEM的验证、确认和不确定性评估的模型和程序。它建议并提供关于无线通信设备建模的指导，并提供用于在这种模型或模型中模拟SAR的基准数据。 本文件不推荐特定的SAR限值，因为这些限值可以在其他地方找到（例如，在IEEE Std C95.1中或在国际非电离辐射防护委员会（ICNIRP）发布的指南中）。 本出版物作为IEC/IEEE双标识标准发布。

IEC/IEEE 62704-4:2020 describes the concepts, techniques, and limitations of the finite element method (FEM) and specifies models and procedures for verification, validation and uncertainty assessment for the FEM when used for determining the peak spatial-average specific absorption rate (psSAR) in phantoms or anatomical models. It recommends and provides guidance on the modelling of wireless communication devices, and provides benchmark data for simulating the SAR in such phantoms or models.
This document does not recommend specific SAR limits because these are found elsewhere (e.g. in IEEE Std C95.1 or in the guidelines published by the International Commission on Non-Ionizing Radiation Protection (ICNIRP)).
This publication is published as an IEC/IEEE Dual Logo standard.