AS IEC 62209.3 pdf download.Measurement procedure for the assessment of specific absorption rate of human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices
This part of IEC 62209 specifies measurement protocols and test procedures for the reproducible measurement of peak spatial-average specific absorption rate (psSAR) induced inside a simplified model of a human head or body by radio-frequency (RF) transmitting devices, with a specified measurement uncertainty. Requirements are provided for psSAR assessment using vector measurement-based systems. Such systems determine the psSAR by three-dimensional (3D) field reconstruction within the volume of interest in accordance with the requirements herein for the measurement system, calibration, uncertainty assessment and validation methods. The protocols and procedures apply for the psSAR assessments covering a significant majority of people including children during use of wireless communication devices operated in close proximity to the head or body. This document is applicable to wireless communication devices intended to be used at a position near the human head or body at distances up to and including 200 mm. This document may be employed to evaluate SAR compliance of different types of wireless communication devices used next to the ear, in front of the face, mounted on the body, combined with other RF-transmitting or non-transmitting devices or accessories (e.g. belt-clip), or embedded in garments. The overall applicable frequency range is from 600 MHz to 6 GHz. The system validation procedures provided within this document cover frequencies from 600 MHz to 6 GHz. With a vector measurement-based system this document can be employed to evaluate SAR compliance of different types of wireless communication devices. The wireless communication device categories covered include but are not limited to mobile telephones, cordless microphones, auxiliary broadcast devices and radio transmitters in personal computers, desktop and laptop devices, multi-band, multi-antenna, and push-to-talk devices.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62209-1 , IEC 62209-2 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp 3.1 vector probe probe that measures both the amplitude and phase of an electric field or a magnetic field 3.2 scalar probe probe that measures only the amplitude of an electric field or a magnetic field 3.3 vector measurement-based system system consisting of multiple sensors that together provide information about the amplitude distribution or the amplitude and phase distribution of an electric field or a magnetic fields to reconstruct SAR over a specified volume Note 1 to entry: Throughout this document the term “measurement system” generally refers to vector measurement-based system. 3.4 analysis bandwidth <of a signal analyser> maximum frequency span of observation for a system capable of spectral analysis Note 1 to entry: The analysis bandwidth is generally characterized by a specific flatness (+/- a tolerance) of the responses of the system in the specified range of frequencies.3.5 array system array measurement system vector measurement-based system comprised of multiple vector probe or scalar probe elements that are located at fixed positions on a two-dimensional or three-dimensional regular or irregular grid to obtain the measurement data needed to reconstruct the field within and outside the scanned area and in the region of interest 3.6 scanning system scanning measurement system vector measurement-based system comprised of one or more vector probe or scalar probe elements that are physically scanned on a two-dimensional or three-dimensional regular or irregular grid to obtain the measurement data needed to reconstruct the field within and outside the scanned area and in the region of interest with an automatic positioning system capable of placing the measurement probe at specified positions 3.7 volume of interest volume described by the specified measurement area on the phantom surface having side walls that are normal to the phantom surface with a height of at least 22 mm, and having a back side parallel to the surface of the phantom