IEC 62577-2009 Evaluation of human exposure to electromagnetic fields from a stand alone broadcast transmitter (30 MHz - 40 GHz)《人类接触独立广播发射机(30 MHz-40 GHz)电磁场的评价》.pdf

1、 IEC 62577 Edition 1.0 2009-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Evaluation of human exposure to electromagnetic fields from a stand-alone broadcast transmitter (30 MHz 40 GHz) Evaluation de lexposition des personnes aux champs lectromagntiques provenant des metteurs de radiodiffusion isol

2、s (30 MHz 40 GHz) IEC 62577:2009 colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including p

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16、z des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 62577 Edition 1.0 2009-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Evaluation of human exposure to electromagnetic fields from a stand-alone broadcast transmitter

17、 (30 MHz 40 GHz) Evaluation de lexposition des personnes aux champs lectromagntiques provenant des metteurs de radiodiffusion isols (30 MHz 40 GHz) INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE T ICS 13.280; 17.240; 33.170 PRICE CODE CODE PRIX ISBN 2-8318-1057-

18、0 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale colour inside 2 62577 IEC:2009 CONTENTS FOREWORD.3 1 Scope and object5 2 Normative references .5 3 Terms and definitions .5 4 Physical quantities, units and constants

19、 .9 4.1 Quantities9 4.2 Constants10 5 Applicability of compliance assessment methods10 5.1 Overview.10 5.2 Assessment procedure10 5.3 Representative antennas for each service .11 6 SAR measurement and calculation .12 6.1 Whole-body SAR inherent compliance.12 6.2 SAR compliance12 7 Electromagnetic fi

20、eld measurement 12 7.1 Measurement 12 7.2 Measurement uncertainty 13 8 Electromagnetic field calculation 16 8.1 Procedures to calculate the electromagnetic field16 8.2 Field regions .17 8.3 Calculation models18 9 Contact currents measurement and calculation.19 10 Induced current measurement and calc

21、ulation19 Annex A (normative) Field measurement in a volume surrounding the EUT20 Annex B (informative) Compliance boundary examples23 Bibliography25 Figure 1 Alternative routes to calculate E-field, H-field values at point of investigation.17 Figure A.1 Block diagram of the EUT measurement system .

22、20 Figure A.2 Cylindrical, cartesian and spherical co-ordinates defined relative to the EUT 21 Table 1 Applicable methods for each antenna region .11 Table 2 Representative antennas.12 Table 3 Recommended parameters13 Table 4 Uncertainty evaluation.16 Table B.1 Compliance boundary examples.24 62577

23、IEC:2009 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ EVALUATION OF HUMAN EXPOSURE TO ELECTROMAGNETIC FIELDS FROM A STAND-ALONE BROADCAST TRANSMITTER (30 MHz 40 GHz) FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all nation

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34、ommittee 106: Methods for the assessment of electric, magnetic and electromagnetic fields associated with human exposure, and CENELEC TC 106X: Electromagnetic fields in the human environment. The text of this standard is based on the following documents: FDIS Report on voting 106/176/FDIS 106/179/RV

35、D Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 4 62577 IEC:2009 The committee has decided that the contents of this publication

36、will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. IMPORTANT The “colour inside”

37、logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this publication using a colour printer. 62577 IEC:2009 5 EVALUATION OF HUMAN EXPOSURE TO ELECTROMAGNETIC FIELDS

38、 FROM A STAND-ALONE BROADCAST TRANSMITTER (30 MHz 40 GHz) 1 Scope and object This International Standard applies to a single stand-alone broadcast transmitter operating in the frequency range 30 MHz to 40 GHz when put on the market (see Note 1). The objective of the standard is to specify, for such

39、equipment operating in typical conditions, the method for assessment of compliance distances according to the basic restrictions (directly or indirectly via compliance with reference levels) related to human exposure to radio frequency electromagnetic fields. NOTE 1 This standard only applies to bro

40、adcast transmitters being placed on the market (type approval) and does not apply to broadcast transmitters being commissioned or placed into service. NOTE 2 Compliance certification depends on the policy of national regulatory bodies. 2 Normative references The following referenced documents are in

41、dispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC Guide 98-3:2008, Uncertainty of measurement Part 3: Guide to the expression of unc

42、ertainty in measurement (GUM:1995) EN 50413, Basic standard on measurement and calculation procedures for human exposure to electric, magnetic and electromagnetic fields (0 Hz 300 GHz) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 antenna d

43、evice that serves as a transducer between a guided wave (e.g. coaxial cable) and a free space wave, or vice versa 3.2 basic restriction restrictions on exposure to time-varying electric, magnetic, and electromagnetic fields that are based directly on established health effects 3.3 broadcasting servi

44、ce radiocommunication service in which the transmissions are intended for direct reception by the general public. This service may include sound transmissions, television transmissions or other types of transmission 6 62577 IEC:2009 3.4 compliance distance minimum distance from the antenna where a p

45、oint of investigation is deemed to be compliant. The set of compliance distances therefore defines the boundary outside which the exposure levels do not exceed the basic restrictions irrespective of the time of exposure. The distances are measured related to the nearest point of the antenna in each

46、investigation direction 3.5 conductivity ratio of the conduction-current density in a medium to the electric field strength. Conductivity is expressed in units of siemens per metre (S/m) 3.6 contact current current produced in the body involved by human contact with metallic objects in the field. Sh

47、ocks and burns can be the adverse indirect effects. Contact current relates to an instantaneous effect and so cant be time-averaged 3.7 electric field strength E magnitude of a field vector at a point that represents the force (F) on a positive small charge (q) divided by the charge q F E = (1) Elec

48、tric field strength is expressed in units of volt per metre (V/m). 3.8 electric flux density D magnitude of a field vector that is equal to the electric field strength (E) multiplied by the permittivity ( ) E D = (2) Electric flux density is expressed in units of coulomb per square metre (C/m). NOTE

49、 See also IEV 121-11-40. 3.9 equipment under test EUT device (such as transmitter, or antenna as appropriate) that is the subject of the specific test investigation being described 3.10 induced current currents circulating inside a human body resulting directly from an exposure to an electromagnetic field 62577 IEC:2009 7 3.11 intrinsic impedance (of free space 0 ) ratio of the electric