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BS EN 62209-2:2010

BS EN 62209-2:2010

$215.11

Human exposure to radio frequency fields from hand-held and bodymounted wireless communication devices. Human models, instrumentation, and procedures – 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)

Published By Publication Date Number of Pages
BSI 2010 118
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IEC 62209-2:2010 is applicable to any wireless communication device capable of transmitting electromagnetic fields (EMF) intended to be used at a position near the human body, in the manner described by the manufacturer, with the radiating part(s) of the device at distances up to and including 200 mm from a human body, i.e. when held in the hand or in front of the face, mounted on the body, combined with other transmitting or non-transmitting devices or accessories (e.g. belt-clip, camera or Bluetooth add-on), or embedded in garments. For transmitters used in close proximity to the human ear, the procedures of IEC 62209-1:2005 are applicable. IEC 62209-2:2010 is applicable for radio frequency exposure in the frequency range of 30 MHz to 6 GHz, and may be used to measure simultaneous exposures from multiple radio sources used in close proximity to human body. Definitions and evaluation procedures are provided for the following general categories of device types: – body-mounted, – body-supported, – desktop, – front-of-face, – hand-held, – laptop, – limb-mounted, – multi-band, – push-to-talk, – clothing-integrated. The types of devices considered include but are not limited to mobile telephones, cordless microphones, auxiliary broadcast devices and radio transmitters in personal computers. IEC 62209-2:2010 gives guidelines for a reproducible and conservative measurement methodology for determining the compliance of wireless devices with the SAR limits. The contents of the corrigendum of June 2010 have been included in this copy.

PDF Catalog

PDF Pages PDF Title
6 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope
2 Normative references
13 3 Terms and definitions
16 4 Symbols and abbreviated terms
4.1 Physical quantities
4.2 Constants
4.3 Abbreviations
17 5 Measurement system specifications
5.1 General requirements
18 5.2 Phantom specifications – shell and liquid
19 Figures
Figure 1 – Dimensions of the elliptical phantom
20 Tables
Table 1 – Dielectric properties of the tissue-equivalent liquid material
21 5.3 Measurement instrumentation system specifications
22 6 Protocol for SAR evaluation
6.1 Measurement preparation
25 Figure 2 – Definition of reference points
26 Figure 3 – Measurements by shifting of the device at the phantom
27 Figure 4 – Test positions for a generic device
28 Figure 5 – Test positions for body-worn devices
Figure 6 – Device with swivel antenna (example of desktop device)
30 Figure 7 – Test positions for body supported devices
31 Figure 8 – Test positions for desktop devices
32 Figure 9 – Test positions for front-of-face devices
33 Figure 10 – Test position for limb-worn devices
34 6.2 Tests to be performed
Figure 11 – Test position for clothing-integrated wireless devices
37 Figure 12 – Block diagram of the tests to be performed
38 6.3 Measurement procedure
39 Figure 13 – Orientation of the probe with respect to the normal of the phantom surface
41 6.4 Post-processing
42 7 Uncertainty estimation
7.1 General considerations
44 7.2 Components contributing to uncertainty
54 Table 2 – Example uncertainty template and example numerical values for relative permittivity (ε′r ) and conductivity (σ) measurement; separate tables may be needed for each ε′r and σ
58 Table 3 – Parameters for reference function f1
59 Table 4 – Reference SAR values in watts per kilogram used for estimating post-processing uncertainties
62 7.3 Uncertainty estimation
63 Table 5 – Measurement uncertainty evaluation template for DUT SAR test
65 Table 6 – Measurement uncertainty evaluation template for system validation
67 Table 7 – Measurement uncertainty evaluation template for system repeatability
68 8 Measurement report
8.1 General
8.2 Items to be recorded in the measurement report
70 Annex A (informative) Phantom rationale
73 Annex B (normative) SAR measurement system verification
75 Figure B.1 – Set-up for the system check
80 Table B.1 – Numerical reference SAR values for reference dipoles and flat phantom ( All values are normalized to a forward power of 1 W
81 Table B.2 – Numerical reference SAR values for reference matched waveguides in contact with flat phantom (from reference ‎[53])
82 Annex C (informative) Fast SAR testing
84 Annex D (informative) Standard sources and phantoms for system validation
85 Table D.1 – Mechanical dimensions of the reference dipoles
86 Figure D.1 – Mechanical details of the reference dipole
87 Figure D.2 – Dimensions of the flat phantom set-up used for deriving the minimal dimensions for W and L
88 Figure D.3 – FDTD predicted uncertainty in the 10 g peak spatial-average SAR as a function of the dimensions of the flat phantom compared with an infinite flat phantom
Table D.2 – Parameters used for calculation of reference SAR values in Table B.1
89 Figure D.4 – Standard waveguide source
Table D.3 – Mechanical dimensions of the standard waveguide
90 Annex E (informative) Example recipes for phantom tissue-equivalent liquids
91 Table E.1 – Suggested recipes for achieving target dielectric parameters
93 Annex F (normative) SAR correction for deviations of complex permittivity from targets
94 Table F.1 – Root-mean-squared error of Equations (F.1) to (F.3) as a function of the maximum change in permittivity or conductivity ‎[13]
95 Annex G (informative) Hands-free kit testing
Figure G.1 – Configuration of a wired personal hands-free headset
96 Figure G.2 – Configuration without a wired personal hands-free headset
98 Annex H (informative) Skin enhancement factor
Figure H.1 – SAR and temperature increase (ΔT) distributions simulated for a three-layer (skin, fat, muscle) planar torso model
99 Figure H.2 –Statistical approach to protect 90 % of the population
100 Figure H.3 – Spatial-average SAR skin enhancement factors
Table H.1 – Spatial-average SAR correction factors
102 Annex I (informative) Tissue-equivalent liquid dielectric property measurements and measurement uncertainty estimation
Table I.1 – Parameters for calculating the dielectric properties of various reference liquids
103 Table I.2 – Dielectric properties of reference liquids at 20 °C
104 Annex J (informative) Testing compliance for the exposure of the hand
Figure J.1 – Test position for hand-held devices, not used at the head or torso
106 Annex K (informative) Test reduction
108 Annex L (normative) Power scaling procedure
110 Annex M (informative) Rationale for probe parameters
Table M.1 – Minimum probe requirements as a function of frequency and parameters of the tissue equivalent liquid
111 Table M.2 – Extrapolation and integration uncertainty of the 10 g peak spatial average SAR (k=2) for homogeneous and graded meshes
112 Bibliography

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