What is IEC IEEE 62704-4 about?
IEC IEEE 62704-4 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.
IEC IEEE 62704-4 recommends and provides guidance on the modelling of wireless communication devices, and provides benchmark data for simulating the SAR in such phantoms or models.
Who is IEC IEEE 62704-4 for?
IEC IEEE 62704-4 on determination of SAR is relevant to:
- Wireless communication device manufacturers
- Service providers for wireless communication
- Telecommunications industry
- Regulatory bodies
Why should you use IEC IEEE 62704-4?
Finite element methods have reached a level of maturity that allows their application in specific absorption rate (SAR) assessments of professional-use and consumer-use wireless communication devices.
The purpose of IEC IEEE 62704-4 is to specify numerical techniques and models to determine peak spatial-average specific absorption rates (SAR). SAR will be determined by applying finite element method simulations of the electromagnetic field conditions produced by wireless communication devices in models of the human anatomy.
The benefits to the users and the regulators include standardized and accepted protocols, verification and validation techniques, benchmark data, reporting format and means for estimating the overall assessment uncertainty in order to produce valid, repeatable, and reproducible data. The objective of the methods to evaluate the psSAR in compliance with IEC IEEE 62704-4, is to yield results that correspond to the methods, which describes how to compute psSAR on a rectangular mesh. The same algorithm shall be applied to calculate psSAR for FEM simulations within IEC IEEE 62704-4.
Reasons for using FEM include its proven track record in a broad range of electromagnetic applications, and its ability to use an unstructured, usually tetrahedral, mesh that conforms to complicated geometries, employing arbitrarily small elements where needed and larger elements elsewhere.
In this regard, you can achieve an accurate assessment of SAR with IEC IEEE 62704-4-compliant guidelines, which essential to determine whether radio frequency exposures are within safety guidelines. SAR testing at early stages of product development cycle will enable you to modify products seamlessly, thereby fostering credibility and reliability.
