PD IEC PAS 63446:2022

Conversion method of specific absorption rate to absorbed power density for the assessment of human exposure to radio frequency electromagnetic fields from wireless devices in close proximity to the head and body. Frequency range of 6 GHz to 10 GHz. | Status: Current

1 Scope This document specifies a conversion method for the assessment of the peak spatial-average absorbed power density (psAPD) in the human head and body due to exposure to radio frequency (RF) electromagnetic fields (EMF) from wireless communication devices, with a specified conversion uncertainty. This conversion method is based on specific absorption rate (SAR) values and is specified with the objective to yield conservative and reproducible absorbed power density values of the exposure for a significant majority of the population during the use of hand-held, body-worn or any other RF transmitting communication devices that can operate in close proximity to a human head or body. This conversion method applies for devices that can feature single or multiple transmitters and/or antennas and can be operated with their radiating structure(s) at distances up to 200 mm from a human head or body. The conversion method of this document can be employed to determine conformity with applicable absorbed power density or epithelial power density limits, such as those defined in ICNIRP guidelines 2020 [3] and IEEE Std C95.1™-2019 [4], of different types of RF transmitting communication devices being used in close proximity to the head and body. The assessment of psAPD is based on the conversion of the peak spatial-average specific absorption rate (psSAR) values assessed according to applicable international standards. The applicable frequency range of the conversion method of this document is 6 GHz to 10 GHz.

NOTE Applicable international standards for the assessment of the psSAR are those accepted by the local regulatory body or specified in the CENELEC product standards. Such international standards include, e.g. IEC/IEEE 62209‑1528 and IEC 62209‑3[5] for measurement methods, and IEC/IEEE 62704‑1[6] and IEC/IEEE 62704‑4[7] for computational methods. The frequency range of [5], [6] and [7] is limited up to 6 GHz. While the applicability of the methods of [5] for the frequency range of this document may need further verification, the numerical standards [6] and [7].may be applied for frequencies up to 10 GHz.

The categories of RF transmitting communication devices covered in this document include but are not limited to mobile telephones, radio transmitters in personal computers, and desktop and laptop devices or devices embedded in garments, using single or multiple transmitters and/or antennas, when operating within the frequency range indicated above. The conversion method of this document does not apply for EMF evaluation of exposure from the devices or objects intended to be implanted in the body, such as active or passive implanted medical devices.