IEEE P62704-3/D2

P62704-3/D2 is a technical standard focused on average specific absorption rate (SAR) in the human body from wireless communications devices across 30 MHz to 6 GHz. It addresses the use of the finite difference time domain (FDTD) method for SAR calculations of mobile phones, helping engineers and test teams assess exposure in a structured way. For communication, networking, and electromagnetic design work, this document supports more consistent analysis and comparison.

P62704-3/D2 overview

This standard provides specific requirements for applying the FDTD method when estimating SAR from mobile phones. It sits within a technical area that combines wireless communications, device engineering, and field and wave analysis. The document is relevant where numerical modeling must be aligned with defined calculation practices, especially for human-body exposure assessment. As an inactive standard, P62704-3/D2 is typically of interest for reference, legacy compliance work, or comparison with related methods.

Typical use cases

P62704-3/D2 is commonly used in SAR simulation workflows for mobile handset design, antenna integration, and exposure evaluation at radio frequencies. It may support engineering teams running FDTD-based models of a phone near head or body phantoms, as well as laboratories checking calculation consistency against technical requirements. The standard is also useful in product development, certification planning, and documentation for wireless devices operating in the 30 MHz to 6 GHz range.

Why this standard matters

For organizations working with mobile communications devices, this standard helps create repeatable SAR calculation practices and reduces ambiguity in numerical analysis. Using a defined approach for the FDTD method can improve consistency between design, testing, and review teams, which is important when evaluating human exposure and safety-related performance. P62704-3/D2 can also support procurement and compliance discussions by giving stakeholders a clearer technical reference for model setup and result interpretation.

• FDTD-based SAR calculation requirements
• Mobile phone exposure assessment
• 30 MHz to 6 GHz frequency range
• Human-body interaction modeling
• Legacy reference for inactive standard tracking