EN 50383:2010

SLOVENSKI STANDARD
01-september-2010
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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 telecommunication systems (110 MHz - 40 GHz)
Grundnorm für die Berechnung und Messung der elektromagnetischen Feldstärke und
SAR in Bezug auf die Sicherheit von Personen in elektromagnetischen Feldern von
Mobilfunk-Basisstationen und stationären Teilnehmergeräten von schnurlosen
Telekommunikationsanlagen (110 MHz bis 40 GHz)
Norme de base pour le calcul et la mesure des champs électromagnétiques et SAR
associés à l'exposition des personnes provenant des stations de base radio et des
stations terminales fixes pour les systèmes de radiotélécommunications (110 MHz - 40
GHz)
Ta slovenski standard je istoveten z: EN 50383:2010
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
33.070.01 Mobilni servisi na splošno Mobile services in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50383
NORME EUROPÉENNE
June 2010
EUROPÄISCHE NORM
ICS 17.220.20; 33.070.01 Supersedes EN 50383:2002

English 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 telecommunication
systems (110 MHz - 40 GHz)
Norme de base pour le calcul et la mesure Grundnorm für die Berechnung und
des champs électromagnétiques et SAR Messung der elektromagnetischen
associés à l'exposition des personnes Feldstärke und SAR in Bezug auf die
provenant des stations de base radio Sicherheit von Personen
et des stations terminales fixes pour in elektromagnetischen Feldern
les systèmes de radiotélécommunications von Mobilfunk-Basisstationen
(110 MHz - 40 GHz) und stationären Teilnehmergeräten
von schnurlosen
Telekommunikationsanlagen
(110 MHz bis 40 GHz)
This European Standard was approved by CENELEC on 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 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 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, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für 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 CENELEC members.
Ref. No. EN 50383:2010 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 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 changes 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 between 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
rights.
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
(dow) 2013-06-01
with the EN have to be withdrawn
__________
- 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 is 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 documents 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 and 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, General 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 public
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.

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/m

Electric field strength E volt per metre V/m
Electric flux density D coulomb per square metre C/m
Electric conductivity siemens per metre S/m
σ
Frequency f hertz Hz
Magnetic field strength H ampere per metre A/m
Magnetic flux density B tesla (Vs/m) T
Mass density ρ kilo per cubic metre kg/m
Permeability µ henry per metre H/m
Permittivity ε farad per metre F/m
Specific absorption rate SAR watt per kilogram W/kg
Wavelength λ metre m
Temperature T kelvin K
3.1.2 Constants
Physical constant Magnitude
Speed of light in a vacuum c 2,997 x 10 m/s
-12
Permittivity of free space ε 8,854 x 10 F/m
-7
Permeability of free space µ 4π x 10 H/m
Impedance of free space η 120π (approx. 377) Ω
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
- 5 - EN 50383:2010
4.2
average (temporal) absorbed power
P
avg
the time-averaged rate of energy transfer defined by:

t
_
=
P P(t)dt
∫
avg
−
t t
2 1
t
1    (1)
where t and t are the start and stop time of the exposure. The period t – t is the exposure duration time
1 2 2 1
4.3
averaging time
t
avg
the appropriate time over which exposure is averaged for purposes of determining compliance 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 electromagnetic 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 point 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
σ
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)

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 field 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:
F
E =     (2)
q
Electric field strength is expressed in units of volt per metre (V/m)

4.11
electric flux density
D
the magnitude of a field vector that is equal to the electric field strength (E) multiplied by the permittivity
(ε ):
D = εE    (3)
Electric flux density is expressed in units of coulomb per square metre (C/m )

4.12
equipment under test
EUT
device (such as transmitter, base station or antenna 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 stations 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
intrinsic impedance (of free space η )
η
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 π (approximately 377) ohm

4.15
isotropy
deviation of the measured value with regard to various 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 quantity 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 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
loss tangent
the loss tangent tan(δ) 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
(µ) of the medium:
B = µ H    (4)
Magnetic flux density is expressed in units of tesla (T)

- 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 (v × µ H)    (5)
The magnetic field 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
permeability
µ
the magnetic permeability of a material is defined by the magnetic flux density B divided by the magnetic
field strength H:
B
µ =
(6)
H
where
µ is the permeability of the medium expressed in Henry per metre (H/m)

4.23
permittivity
ε
the property of a dielectric material (e.g. biological tissue) defined by the electrical flux density D divided
by the electrical field strength E:
D
ε =
(7)
E
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 with 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 point on the
EUT
4.26
power flux density
S
power per unit area normal to the direction of electromagnetic wave propagatio
...