IEEE 62704-4-2020

62704-4-2020 is a technical standard for estimating average specific absorption rate (SAR) in the human body from wireless communication devices operating from 30 MHz to 6 GHz. It focuses on general requirements for using the finite element method in SAR calculations, making it relevant to bioengineering, electromagnetics, and device testing workflows. For teams evaluating exposure compliance or simulation methods, it helps define a consistent analytical basis for more reliable results.

Overview of 62704-4-2020

This standard addresses the use of the finite element method for SAR calculations in the human body, with a scope centered on wireless communication devices across the 30 MHz to 6 GHz range. 62704-4-2020 is intended to support consistent modeling practice, helping ensure that computational results are comparable and technically defensible. It sits at the intersection of fields, waves and electromagnetics, device engineering, and bioengineering, where accurate exposure assessment is often a key requirement.

Typical use cases

Typical use of 62704-4-2020 includes simulation-based evaluation of handheld, wearable, and other wireless devices that may be used close to the body. It is relevant when engineering teams need to model electromagnetic interaction with biological tissue, set up finite element analysis workflows, or support SAR-related verification during product development. The standard is also useful in research, compliance preparation, and test planning for communication devices operating within the covered frequency range.

Why it matters

This standard matters because SAR assessment can affect both safety decisions and product acceptance. By giving general requirements for finite element method use, 62704-4-2020 helps reduce variation between analyses and improves confidence in the resulting exposure estimates. That consistency can support internal design review, supplier alignment, and regulatory or conformity-related documentation. For organizations working with wireless products, it provides a clearer basis for comparing models, refining designs, and managing technical risk.

• SAR calculation methodology
• Finite element modeling requirements
• Wireless devices, 30 MHz to 6 GHz
• Human body exposure assessment
• Simulation and compliance workflows