BS IEC/IEEE 62704-2 is a safety standard on determining the peak spatial-average specific absorption rate (SAR) in the human body from wireless communications devices.
BS IEC/IEEE 62704-2 establishes the concepts, techniques, validation procedures, uncertainties, and limitations of the finite difference time domain technique (FDTD) when used for determining the peak spatial-average and whole-body average specific absorption rate (SAR) in a standardized human anatomical model exposed to the electromagnetic field emitted by vehicle-mounted antennas in the frequency range from 30 MHz to 1 GHz, which covers typical high power mobile radio products and applications.
BS IEC/IEEE 62704-2 specifies and provides the test vehicle, human body models, and the general benchmark data for those models. BS IEC/IEEE 62704-2 defines antenna locations, operating configurations, exposure conditions, and positions that are typical of persons exposed to the fields generated by vehicle-mounted antennas. The extended frequency range up to 6 GHz will be considered in future revisions of BS IEC/IEEE 62704-2.
Note 1: BS IEC/IEEE 62704-2 does not recommend specific peak spatial average and whole-body average SAR limits since these are found in other documents, e.g., IEEE C95.1-2005, ICNIRP (1998).
Note 2: It is not the intent of BS IEC/IEEE 62704-2 to provide a result representative of the absolute maximum SAR value possible under every conceivable combination of body size, posture, vehicle model, and distance from the vehicle and antenna.
Note 3: BS IEC/IEEE 62704-2 does not recommend specific SAR limit values since these are found in other documents.
BS IEC/IEEE 62704-2 on specific requirements for finite difference time domain (FDTD) modelling of exposure from vehicle-mounted antennas is relevant to:
Computational techniques have reached a level of maturity that allows their use in compliance assessments of wireless communication devices with vehicle-mounted antennas. This technique is efficient and cost-effective. Experimental compliance assessments for wireless communication devices used in combination with vehicles are extremely complex to perform or even not possible at all.
The benefits to the user of BS IEC/IEEE 62704-2 guidelines include standardized and accepted protocols, standardized anatomical models, validation techniques, benchmark data, reporting format, means for estimating the overall uncertainty to produce valid, accurate, repeatable, and reproducible results.
BS IEC/IEEE 62704-2 is intended primarily for use by engineers and other specialists who are familiar with electromagnetic (EM) theory, numerical methods, and FDTD techniques.
IEC/IEEE 62704-2:2017