IEEE 62704-3-2017

62704-3-2017 is a technical standard for estimating the average specific absorption rate (SAR) in the human body from wireless communications devices operating from 30 MHz to 6 GHz. Focused on Fields, Waves and Electromagnetics, it addresses the use of the finite difference time domain (FDTD) method for SAR calculations of mobile phones. It is relevant where numerical modeling, exposure assessment, and test consistency matter for device evaluation and engineering decisions.

62704-3-2017 overview

This standard provides specific requirements for applying the FDTD method to SAR calculations for mobile phones, helping define a consistent computational approach within the broader field of electromagnetic exposure analysis. By narrowing the scope to human-body SAR from wireless devices in the 30 MHz to 6 GHz range, 62704-3-2017 supports repeatable technical work for simulation and assessment. It is especially useful when teams need a structured basis for comparing results across designs, models, or test setups.

Typical use cases

62704-3-2017 is typically used when engineers model mobile phone exposure near the human head or body, particularly during wireless device compliance studies and pre-test evaluation. It may support computational workflows built around FDTD solvers, anatomical models, and SAR post-processing for frequencies covered by the standard. The document is also relevant to laboratories and product teams that need a common method for reviewing mobile device designs against electromagnetic safety objectives.

Why this standard matters

For SAR-related engineering, this standard helps reduce ambiguity in how calculations are performed and interpreted. Using 62704-3-2017 can improve consistency between simulations, support internal design control, and provide a clearer technical basis for compliance-related decisions. Because mobile phones interact closely with the human body, a defined FDTD procedure is important for limiting risk, comparing results, and maintaining confidence in electromagnetic exposure assessments.

• FDTD method requirements
• Mobile phone SAR calculations
• 30 MHz to 6 GHz scope
• Human-body exposure assessment
• Electromagnetic compliance support