IEC 62209-2:2010/AMD1:2019

Amendment 1 - 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 wireless communication devices used in close proximity to the human body (frequency range of 30 MHz to 6 GHz)

Amendement 1 - Exposition humaine aux champs radiofréquence produits par les dispositifs de communications sans fils tenus à la main ou portés près du corps - Modèles de corps humain, instrumentation et procédures - Partie 2: Procédure de détermination du débit d'absorption spécifique produit par les appareils de communications sans fil utilisés très près du corps humain (gamme de fréquences de 30 MHz à 6 GHz)

General Information

• Status: Replaced
• Publication Date: 16-May-2019
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.050.10 - Telephone equipment
• Technical Committee: TC 106 - Methods for the assessment of electric, magnetic and electromagnetic fields associated with human exposure
• Drafting Committee: MT 1 - TC 106/MT 1
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 29-Oct-2020

Relations

• Replaced By: IEC/IEEE 62209-1528:2020 - Measurement procedure for the assessment of specific absorption rate of human exposure to radio frequency fields from hand-held and body-worn wireless communication devices - Human models, instrumentation and procedures (Frequency range of 4 MHz to 10 GHz)
• Effective Date: 05-Sep-2023
• Amends: IEC 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 wireless communication devices used in close proximity to the human body (frequency range of 30 MHz to 6 GHz)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62209-2 ®
Edition 1.0 2019-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
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 wireless
communication devices used in close proximity to the human body (frequency
range of 30 MHz to 6 GHz)
Exposition humaine aux champs radiofréquence produits par les dispositifs
de communications sans fils tenus à la main ou portés près du corps –
Modèles de corps humain, instrumentation et procédures –
Partie 2: Procédure de détermination du débit d'absorption spécifique produit
par les appareils de communications sans fil utilisés très près du corps humain
(gamme de fréquences de 30 MHz à 6 GHz)
IEC 62209-2:2010-03/AMD1:2019-05(en-fr)

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IEC 62209-2 ®
Edition 1.0 2019-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
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 wireless

communication devices used in close proximity to the human body (frequency

range of 30 MHz to 6 GHz)
Exposition humaine aux champs radiofréquence produits par les dispositifs

de communications sans fils tenus à la main ou portés près du corps –

Modèles de corps humain, instrumentation et procédures –

Partie 2: Procédure de détermination du débit d'absorption spécifique produit

par les appareils de communications sans fil utilisés très près du corps humain

(gamme de fréquences de 30 MHz à 6 GHz)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.050.10 ISBN 978-2-8322-6923-7

– 2 – IEC 62209-2:2010/AMD1:2019
© IEC 2019
FOREWORD
This amendment has been prepared by IEC technical committee 106: Methods for the
assessment of electric, magnetic and electromagnetic fields associated with human exposure.
The text of this amendment is based on the following documents:
FDIS Report on voting
106/484/FDIS 106/492/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC website 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.
_____________
6.3 Measurement procedure
6.3.1 General procedure
Replace paragraph d) with the following:
d) Measure the three-dimensional SAR distribution at each of the local maxima locations
identified in step c) (zoom scan procedure).
For frequencies at or below 3 GHz, the following procedure shall be applied (see Table 8):
The horizontal grid step shall be 8 mm or less. The grid step in the vertical direction shall
be 5 mm or less if uniform spacing is used. If variable spacing is used in the vertical
direction, the maximum spacing between the two closest measured points to the phantom
shell (M1 and M2, see Figure 14) shall be 4 mm or less and the spacing between farther
points shall increase by a factor of 1,5 or less. The minimum size of the zoom scan
volume shall be 30 mm by 30 mm by 30 mm. For other parameters, see Table 8 and
Figure 14.
For frequencies above 3 GHz, the minimum size of the zoom scan volume may be
reduced to 22 mm by 22 mm by 22 mm. The horizontal grid step shall be (24/f [GHz]) mm
or less. If uniform spacing in the vertical direction is used, the grid step in the vertical
direction shall be (10/(f [GHz] − 1)) mm or less. If variable spacing is used in the vertical
direction, the maximum spacing between the two measured points closest to the phantom
shell shall be (12/f [GHz]) mm or less and the spacing between further points shall
increase by a factor of 1,5 or less. For other parameters, see Table 8 and Figure 14.
When the highest 1 g or 10 g cube is touching the boundary of a zoom-scan volume, the
entire zoom scan shall be repeated with the new centre located at the maximum psSAR
location indicated by the preceding zoom scan measurement.

© IEC 2019
If the zoom scan measured as defined above complies with both of the following criteria,
or if the peak spatial-average SAR is below 0,1 W/kg, no additional measurements are
needed:
1) the smallest horizontal distance from the local SAR peaks to all points 3 dB below the
SAR peak shall be larger than the horizontal grid steps in both x and y directions
(Δx, Δy). This shall be checked for the measured zoom scan plane conformal to the
phantom at the distance z . The minimum distance shall be recorded in the SAR test
M1
report;
2) the ratio of the SAR at the second measured point (M2) to the SAR at the closest
measured point (M1) at the x-y location of the measured maximum SAR value shall be
at least 30 % (see Figure 14). This ratio (in %) shall be recorded in the SAR test report.

NOTE M1 to M8 are example measurement points used for extrapolation to the surface. The maximum of the
angle α between the evaluation axis and the surface normal line is given in Table 2 and Table 8. The distance z
M1
is from the phantom shell to the first measurement point M1, and its maximum value is given in Table 2 and
Table 8. The distances Δz (i = 1, 2, 3, .) are the distances from measurement points M to M . For uniform grids,
i i i-1
Δz are equal. For graded grids, Δz > Δz . R = Δz /Δz is a ratio with a maximum value given in Table 8. The
i i+1 i z i+1 i
z direction corresponds to the vertical direction, the x direction is horizontal and the y direction is horizontal into
the page.
Figure 14 – Orientation of the probe with respect to the line normal
to the phantom surface, shown at two different locations
NOTE 1 The evaluation of the zoom scan is typically done by the post-processor by interpolation and
extrapolation and without reconstruction of the field. More focused induced SAR distributions (e.g., for
more localized sources such as capacitively coupled sources) require a more dense grid such that the
same integration and extrapolation algorithms can be used for the same assessment uncertainty.
NOTE 2 The minimum ratio of 30 % is derived from the plane wave penetration depth at 6 GHz.
If one or both of the above criteria are not met, the zoom scan measurement shall be
repeated using a finer resolution while keeping the other zoom scan parameters
compatible with Table 8. New horizontal and vertical grid steps shall be determined from
the measured SAR distribution so that the above criteria are met. Compliance with the
above two criteria shall be demonstrated for the new measured zoom scan. The size of the
higher resolution zoom scan and other parameters of Table 8 shall apply. The closest
point to the phantom shell shall be 2 mm or less for graded grids and the grading factor
shall be 1,5 or less.
Uncertainties due to field distortion between the media boundary and the dielectric
enclosure of the probe should also be minimized, which is achieved if the distance
between the phantom surface and physical tip of the probe is larger than the probe tip
diameter. Other methods may utilize correction procedures to compensate for boundary
effects that enable high precision measurements closer than half the probe tip
diameter [2],[61]. For all measurement points, the angle of the probe normal to the flat
phantom surface shall be less than 5°. If this cannot be achieved, an additional uncertainty
evaluation according to 7.2.2.6 is required.

– 4 – IEC 62209-2:2010/AMD1:2019
© IEC 2019
Table 8 – Zoom scan parameters
Parameter DUT transmit frequency being tested
f ≤ 3 GHz 3 GHz < f ≤ 6 GHz
a
Maximum distance between the closest 5 δ ln(2)/2
measured points and the phantom surface
(z in Figure 14 and Table 2, in mm)
M1
Maximum angle between the probe axis and the
5° 5°
flat phantom surface normal (α in Figure 14)
b,c
Maximum spacing between measured points in 8 24/f
the x- and y-directions (Δx and Δy, in mm)
For uniform grids: 5 10/(f − 1)
Maximum spacing between measured points in
the direction normal to the phantom shell
(Δz in Figure 14, in mm)
For graded grids: 4 12/f
Maximum spacing between the two closest
measured points in the direction normal to the
phantom shell (Δz in Figure 14, in mm)
For graded grids: 1,5 1,5
Maximum incremental increase in the spacing
between measured points in the direction normal
to the phantom shell (R = Δz /Δz in Figure 14)
z 2 1
Minimum edge length of the zoom scan volume 30 22
in the x- and y-directions (L in 7.2.5.3, in mm)
z
Minimum edge length of the zoom scan volume 30 22
in the direction normal to the phantom shell
(L in 7.2.5.3, in mm)
h
Tolerance in the probe angle 1° 1°
a
δ is the penetration depth for a plane-wave incident normally on a planar half-space.
b
This is the maximum spacing allowed, which may not work for all circumstances.
c
f is the frequency in GHz.
_____________
– 6
...