IEC/TR 62630-2010 暴露于多个电磁源的评估指南

标准号：IEC/TR 62630-2010
中文标准名称：暴露于多个电磁源的评估指南
英文标准名称：Guidance for evaluating exposure from multiple electromagnetic sources
标准类型：N24
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：N24
国际标准分类号：17.220.20;33.050.10;33.070.01
引用标准：IEC 62209-1-2005
适用范围：This Technical Report describes exposure evaluation concepts and techniques for the overallexposure level in spatial regions and occupants caused by the simultaneous exposure tomultiple narrowband electromagnetic (EM) sources. Throughout this Technical Report, it isassumed that the exposure evaluation occurs under static conditions, i.e., the source positionand transmit-mode characteristics (e.g. emitted power, modulation scheme, etc.) of thedevice(s) under test do not vary significantly over the time required to carry out the evaluationusing the chosen evaluation technique (e.g., field measurements).The vast majority of wireless communication systems worldwide employ signalling schemesfeaturing narrowband waveforms, hereinafter defined as signal waveforms occupying afrequency band not broader than 10 % of its central frequency (justification of this threshold isprovided below). For information, Annex A presents the operating system bands and channelbandwidths of several common wireless services.Wide-band communication systems, e.g., ultra-wideband (UWB) systems employing impulsivewaveforms with fractional bandwidth well in excess of 10 %, are relatively new to themarketplace, have experienced limited deployment so far, and are not typically regarded assignificant contributors to EM exposure levels due to low transmit power levels.