BS EN 50383-2010 Basic standard for the calculation and measurement of electromagnetic field strength and SAR related to human exposure from radio base stations and fixed terminal (.pdf

1、BSI Standards PublicationBS EN 50383:2010Basic standard for thecalculation and measurementof electromagnetic fieldstrength and SAR relatedto human exposure fromradio base stations and fixedterminal stations for wirelesstelecommunication systems(110 MHz 40 GHz)-BS EN 50383:2010Incorporating corrigend

2、um June 2013BS EN 50383:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50383:2010, incorporating corrigendum June 2013. It supersedes BS EN 50383:2002 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GEL/106,

3、Human exposure to low frequency and high frequency electromagnetic radiation.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correc

4、t application. The British Standards Institution 2016. Published by BSI Standards Limited 2016ISBN 978 0 580 93660 9ICS 13.280; 17.220.20; 33.070.01Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standard

5、s Policy and Strategy Committee on 30 September 2010.Amendments/corrigenda issued since publicationDate Text affected31 March 2016 Implementation of CENELEC corrigendum June 2013: Clause 6 renumberedBS EN 50383:2010EUROPEAN STANDARD EN 50383 NORME EUROPENNE EUROPISCHE NORM June 2010 CENELEC European

6、 Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELE

7、C members. Ref. No. EN 50383:2010 E ICS 17.220.20; 33.070.01 Supersedes EN 50383:2002English version Basic standard for the calculation and measurement of electromagnetic field strength and SAR related to human exposure from radio base stations and fixed terminal stations for wireless telecommunicat

8、ion systems (110 MHz - 40 GHz) Norme de base pour le calcul et la mesure des champs lectromagntiques et SAR associs lexposition des personnes provenant des stations de base radio et des stations terminales fixes pour les systmes de radiotlcommunications (110 MHz - 40 GHz) Grundnorm fr die Berechnung

9、 und Messung der elektromagnetischen Feldstrke und SAR in Bezug auf die Sicherheit von Personen in elektromagnetischen Feldern von Mobilfunk-Basisstationen und stationren Teilnehmergerten von schnurlosen Telekommunikationsanlagen (110 MHz bis 40 GHz) This European Standard was approved by CENELEC on

10、 2010-06-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may

11、 be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to

12、the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuan

13、ia, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Incorporating corrigendum June 2013BS EN 50383:2010EN 50383:2010 - 2 - Foreword This European Standard was prepared by the Technical Committee CENELEC TC

14、106X, Electromagnetic fields in the human environment. It was submitted to the Unique Acceptance Procedure as a draft amendment and approved by CENELEC as a new edition on 2010-06-01. This European Standard supersedes EN 50383:2002. The main changes compared to EN 50383:2002 are as follows (minor ch

15、anges are not listed): the frequency range has been extended to cover 300 MHz to 6 GHz now, was 300 MHz to 3 GHz before the references to EN 50361 have been updated with referring to EN 62209-2:2010 now and paragraphs have been removed, that are covered by EN 62210-2 the former Annex A “Boundaries b

16、etween field regions“ has been replaced by an Annex “Considerations for using far-field method“ Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent r

17、ights. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2011-06-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-06-01 _ B

18、S EN 50383:2010EN 50383:2010 2 BS EN 50383:2010- 3 - EN 50383:2010 1 Scope This basic standard applies to radio base stations and fixed terminal stations for wireless telecommunication systems as defined in Clause 4, operating in the frequency range 110 MHz to 40 GHz. The objective of the standard i

19、s to specify, for such equipment, 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. 2 Normative references The following referenced d

20、ocuments are indispensable 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. EN 62209-2:2010, Human exposure to radio frequency fields from hand-held an

21、d body-mounted wireless communication devices Human models, instrumentation, and procedures Part 2: Procedure to determine the specific absorption rate (SAR) for mobile wireless communication devices used in close proximity to the human body (frequency range of 30 MHz to 6 GHz ISO/IEC 17025:1999, Ge

22、neral requirements for the competence of testing and calibration laboratories ISO/IEC Guide 98-3:2008, Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) Council Recommendation 1999/519/EC of 12 July 1999 on the limitation of exposure of the general p

23、ublic to electromagnetic fields (0 Hz to 300 GHz) (Official Journal L 197 of 30 July 1999) International Commission on Non-Ionizing Radiation Protection (1998), Guidelines for limiting exposure in time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz). Health Physics 74, 494-522

24、. BS EN 50383:2010EN 50383:2010 3 BS EN 50383:2010EN 50383:2010 - 4 - 3 Physical quantities, units and constants 3.1.1 Quantities The internationally accepted SI-units are used throughout the standard. Quantity Symbol Unit Dimensions Current density J ampere per square metre A/m2Electric field stren

25、gth E volt per metre V/mElectric flux density D coulomb per square metre C/m2Electric conductivity siemens per metre S/m Frequency f hertz Hz Magnetic field strength H ampere per metre A/m Magnetic flux density B tesla (Vs/m2) T Mass density kilo per cubic metre kg/m3Permeability henry per metre H/m

26、 Permittivity farad per metre F/m Specific absorption rate SAR watt per kilogram W/kg Wavelength metre m Temperature T kelvin K 3.1.2 Constants Physical constant Magnitude Speed of light in a vacuum c 2,997 x 108m/s Permittivity of free space 08,854 x 10-12F/m Permeability of free space 04 x 10-7H/m

27、 Impedance of free space 0 120 (approx. 377) 4 Terms and definitions 4.1 antenna device that serves as a transducer between a guided wave (e.g. coaxial cable) and a free space wave, or vice versa BS EN 50383:2010EN 50383:2010 4 BS EN 50383:2010- 5 - EN 50383:2010 4.2 average (temporal) absorbed powe

28、r Pavgthe time-averaged rate of energy transfer defined by: Pavg_=1t2t1P(t)dtt1t2(1) where t1and t2 are the start and stop time of the exposure. The period t2 t1is the exposure duration time 4.3 averaging time tavgthe appropriate time over which exposure is averaged for purposes of determining compl

29、iance with the limits 4.4 base station BS in this standard, the term “Base Station” (BS) covers radio base stations as well as fixed terminal stations intended for use in wireless telecommunications networks 4.5 basic restriction restrictions on exposure to time-varying electric, magnetic and electr

30、omagnetic fields that are based directly on established health effects. In the frequency range from 110 MHz to 10 GHz, the physical quantity used is the specific absorption rate. Between 10 GHz and 40 GHz, the physical quantity is the power density 4.6 compliance boundary volume outside which any po

31、int of investigation is deemed to be compliant. Outside the compliance boundary, the exposure levels do not exceed the basic restrictions irrespective of the time of exposure 4.7 conductivity ratio of the conduction-current density in a medium to the electric field strength. Conductivity is expresse

32、d in units of siemens per metre (S/m) 4.8 continuous exposure exposure for a duration exceeding the averaging time 4.9 duty factor (duty cycle) ratio of the pulse duration to the pulse period of a periodic pulse train. A duty factor of unity corresponds to continuous-wave operation 4.10 electric fie

33、ld strength E the magnitude of a field vector at a point that represents the force (F) on a positive small charge (q) divided by the charge: E =Fq(2) Electric field strength is expressed in units of volt per metre (V/m) BS EN 50383:2010EN 50383:2010 5 BS EN 50383:2010EN 50383:2010 - 6 - 4.11 electri

34、c flux density D the magnitude of a field vector that is equal to the electric field strength (E) multiplied by the permittivity ( ): D = E (3) Electric flux density is expressed in units of coulomb per square metre (C/m2) 4.12 equipment under test EUT device (such as transmitter, base station or an

35、tenna as appropriate) that is the subject of the specific test investigation being described 4.13 fixed terminal station a fixed terminal station, usually associated with the user, comprises the hardware, including transceivers, necessary to transmit and receive radio signals. Fixed terminal station

36、s with integrated antennas, fixed terminal stations with connectors for external antennas and fixed terminal stations intended for use with external antennas not supplied by the same manufacturer are covered. In this standard, the fixed terminal stations are covered by the term “base station” 4.14 i

37、ntrinsic impedance (of free space 0 ) the ratio of the electric field strength to the magnetic field strength of a propagating electromagnetic wave. The intrinsic impedance of a plane wave in free space is 120 (approximately 377) ohm 4.15 isotropy deviation of the measured value with regard to vario

38、us angles of incidence of the measured signal. In this document, it is defined for incidences covering a hemisphere centred at the tip of the probe, with an equatorial plane normal to the probe and expanding outside the probe. The axial isotropy is defined by the maximum deviation of the measured qu

39、antity when rotating the probe along its main axis with the probe exposed to a reference wave with normal incidence with regard to the axis of the probe. The hemispherical isotropy is defined by the maximum deviation of the measured quantity when rotating the probe along its main axis with the probe

40、 exposed to a reference wave with varying angles of incidences with regard to the axis of the probe in the half space in front of the probe 4.16 linearity maximum deviation over the measurement range of the measured quantity from the closest linear reference curve defined over a given interval 4.17

41、loss tangent the loss tangent tan() is the ratio of the imaginary part of the complex dielectric constant of a material to its real part 4.18 magnetic flux density B the magnitude of a field vector that is equal to the magnetic field strength H multiplied by the permeability () of the medium: B = H(

42、4) Magnetic flux density is expressed in units of tesla (T) BS EN 50383:2010EN 50383:2010 6 BS EN 50383:2010- 7 - EN 50383:2010 4.19 magnetic field strength H the magnitude of a field vector in a point that results in a force ( F) on a charge q moving with the velocity v:F = q(vH) (5) The magnetic f

43、ield strength is expressed in units of ampere per metre (A/m) 4.20 multi-band a multi-band equipment is operating in more than one frequency band, e.g. GSM 900 and GSM 1800 4.21 multi-mode a multi-mode equipment is operating with various radio communication systems, e.g. GSM and DECT 4.22 permeabili

44、ty the magnetic permeability of a material is defined by the magnetic flux density B divided by the magnetic field strength H: =BH(6) where is the permeability of the medium expressed in Henry per metre (H/m) 4.23 permittivity the property of a dielectric material (e.g. biological tissue) defined by

45、 the electrical flux density D divided by the electrical field strength E: =DE(7) The permittivity is expressed in units of farad per metre (F/m) 4.24 phantom in this context, a phantom is a simplified representation or a model similar in appearance to the human anatomy and composed of materials wit

46、h electrical properties similar to the corresponding tissues 4.25 point of investigation POI the location in space at which the value of E-field, H-field, Power flux density or SAR is evaluated. This location is defined in Cartesian, cylindrical or spherical co-ordinates relative to the reference po

47、int on the EUT 4.26 power flux density S power per unit area normal to the direction of electromagnetic wave propagation 4.27 radio base station a radio base station, usually associated with the network, comprises the hardware, including transceivers, necessary to transmit and receive radio signals.

48、 Radio base stations with integrated antennas, radio base stations with connectors for external antennas and radio base stations intended for use with external antennas not supplied by the same manufacturer are covered. BS EN 50383:2010EN 50383:2010 7 BS EN 50383:2010EN 50383:2010 - 8 - In this stan

49、dard, the radio base stations are covered by the term “base station” 4.28 radio frequency RF for purposes of these safety considerations, the frequency range of interest is 110 MHz to 40 GHz 4.29 relative permittivity rthe ratio of the permittivity of a dielectric material to the permittivity of free space i.e. 0 =r(8) 4.30 root-mean-square rms value obtained by taking the square root of the average of the square of the value of the periodic function taken throughout one period