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BSI 23/30436008 DC 2023

BSI 23/30436008 DC 2023

$24.66

BS EN IEC/IEEE 62209-3 AMD 1. Measurement procedure for the assessment of specific absorption rate of human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices – Part 3. Vector measurement-based systems (Frequency range of 300 MHz to 6 GHz)

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BSI 2023 217
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PDF Catalog

PDF Pages PDF Title
10 FOREWORD
13 INTRODUCTION
14 1 Scope
15 2 Normative references
16 3 Terms and definitions
24 4 Symbols and abbreviated terms
4.1 Physical quantities
4.2 Constants
25 4.3 Abbreviated terms
26 5 Overview of the measurement procedure
28 6 Measurement system specifications
6.1 General requirements
30 6.2 Phantom specifications
6.2.1 Head phantom specifications – shell
6.2.2 Body phantom specifications – shell
6.2.3 Tissue-equivalent medium properties
6.3 Measurement system requirements
6.3.1 General
6.3.2 Scanning measurement system specifications
31 6.3.3 Array measurement system specifications
32 6.3.4 Measurement system dynamic range
33 6.4 Device holder specification
6.5 Reconstruction algorithm and peak spatial-averaging specifications
35 7 Measurement system preparation and laboratory preparation
7.1 General
7.2 Preparation of tissue-equivalent medium
7.3 System check
7.4 Probe calibration
36 8 Protocol for SAR assessments
8.1 Preparation of the DUT
8.1.1 General
8.1.2 Requirements on power and signal
37 8.1.3 Antenna configuration
8.1.4 Options and accessories
38 8.1.5 Test frequencies for DUT
39 8.2 Measurement procedures
8.2.1 DUT positioning relative to phantom
8.2.2 Tests to be performed
40 8.2.3 Measurements
8.2.3.1 General
8.2.3.2 Measurement procedure for scanning systems
8.2.3.3 Measurement procedure for array systems
8.2.4 SAR measurements for simultaneous transmission
41 8.3 SAR scaling procedure for power or signal variations
42 9 SAR measurements for simultaneous transmission
9.1 General
9.2 SAR measurements for uncorrelated signals
9.2.1 General
43 9.2.2 SAR measurement procedure
9.2.3 Procedure for summation of SAR distributions
44 9.3 SAR measurements for correlated signals
9.3.1 General
9.3.2 Measurement procedure for Type 1 correlated signals
46 9.3.3 Measurement procedure for Type 2 correlated signals
48 10 Position of the DUT in relation to the phantom
10.1 Test distance and positioning relative to the flat phantom
10.1.1 General
10.1.2 DUT-to-phantom separation distance
49 10.1.3 DUT reference points
50 10.1.4 Positions of the DUT in relation to the flat phantom for large DUT
52 10.1.5 Devices used with body-worn accessories
53 10.1.6 Devices with hinged or swivel antenna(s)
54 10.1.7 Devices used next to or against the body without an accessory
56 10.1.8 Desktop device
57 10.1.9 Front-of-face device
58 10.1.10 Hand-held usage of the device, not at the head or torso
10.1.11 Limb-worn device
59 10.1.12 Clothing-integrated device
60 10.1.13 Generic device
61 10.2 Positioning relative to the head phantom
10.2.1 General
10.2.2 Definition of the cheek position
65 10.2.3 Definition of the tilt position
66 10.2.4 DUTs with alternative form factor
67 11 Measurement uncertainty estimation
11.1 General
11.2 Requirements on the measurement uncertainty evaluation
68 11.3 Description of measurement uncertainty models
11.3.1 General
69 11.3.2 Uncertainty models for array measurement system and scanning measurement systems
70 11.3.3 Example uncertainty budget templates
75 12 Measurement report
12.1 General
12.2 Items to be recorded in the measurement report
76 Annex A (normative) Phantom specifications
A.1 SAM phantom specifications
A.1.1 Justification
A.1.2 SAM phantom geometry
A.1.3 Tissue-equivalent medium
77 A.2 Flat phantom specifications
78 A.3 Specific phantoms
A.4 Tissue-equivalent medium
80 Annex B (normative) Calibration and characterization of dosimetric probes
B.1 General
B.2 Types of calibration
B.2.1 Amplitude calibration with analytical fields
82 B.2.2 Amplitude and phase calibration by transfer calibration
84 B.2.3 Amplitude and phase calibration using numerical reference
86 Annex C (informative) Field reconstruction techniques
C.1 General
C.2 Objective of field reconstruction techniques
87 C.3 Background
89 C.4 Reconstruction techniques
C.4.1 Expansion techniques
90 C.4.2 Source reconstruction techniques
C.4.3 Source base function decomposition
C.4.4 Phase reconstruction
91 C.5 Source reconstruction and SAR estimation from fields measured outside the phantom
C.6 Additional considerations for field reconstruction in scanning systems
92 Annex D (normative) SAR measurement system verification and system validation
D.1 Objectives and purpose
D.1.1 General
93 D.1.2 Objectives and purpose of system check
94 D.1.3 Objectives of system validation
95 D.2 SAR measurement setup and procedure for system check and system validation
D.2.1 General
D.2.2 Power measurement setups
97 D.2.3 Procedure to measure and normalise SAR
99 D.2.4 Power measurement uncertainty
102 D.3 System check
D.3.1 System check antennas and test conditions
D.3.2 System check antennas and test conditions for scanning systems
103 D.3.3 System check antennas and test conditions for array systems
D.3.4 System check acceptance criteria
104 D.4 System validation
D.4.1 Validation of array systems and scanning systems
D.4.2 Requirements for system validation antennas and test conditions
D.4.3 Requirements for array systems and scanning systems
105 D.4.4 General approach of system validation procedure
D.4.5 Measurement configurations for system validation
D.4.5.1 General
106 D.4.5.2 Source description
D.4.5.2.1 General
D.4.5.2.2 Antennas
107 D.4.5.2.3 Distance and output power
109 D.4.5.2.4 Modulations
112 D.4.5.3 Antenna location
115 D.4.5.4 Antenna orientation
116 D.4.5.5 Antenna separation distances
119 D.4.5.6 Antenna position exemptions on the head phantoms
120 D.4.6 System validation target values
121 D.4.7 System validation acceptance criteria
123 Annex E (normative) System validation antennas
E.1 General requirements
E.2 Return loss requirements
124 E.3 Standard dipole antenna
127 E.4 VPIFA
E.4.1 General
E.4.2 VPIFA version 1
129 E.4.3 VPIFA version 2
131 E.5 2-PEAK antenna
E.5.1 General
E.5.2 2-PEAK antenna version 1
134 E.5.3 2-PEAK antenna version 2
137 E.6 Additional antennas
138 Annex F (normative) SAR calibration of reference antennas
F.1 Purpose
139 F.2 Parameters or quantities and ranges to be determined by calibration method
F.3 Reference antenna calibration setup
140 F.4 Reference antenna calibration procedure
F.4.1 Verification of return loss
F.4.2 Calibration of reference antennas: step-by-step procedure
141 F.4.3 Uncertainty budget of reference antenna calibration
148 F.5 Method and uncertainties for the transfer of calibration between two or more antennas of the same type using the array system
151 Annex G (informative) Interlaboratory comparisons
G.1 Purpose
G.2 Monitor laboratory
G.3 Reference devices
G.4 Device power set-up
152 G.5 Interlaboratory comparison – Procedure
153 Annex H (informative) General considerations on uncertainty estimation
H.1 Concepts of uncertainty estimation
H.2 Type A and Type B evaluations
154 H.3 Degrees of freedom and coverage factor
155 H.4 Combined and expanded uncertainties
157 Annex I (normative) Evaluation of measurement uncertainty of SAR results from single-probe and probe-array vector measurement-based systems
I.1 General
158 I.2 Measurement uncertainty components typically to be assessed and documented by the system manufacturer MM
I.2.1 Calibration CF
159 I.2.2 Isotropy ISO
I.2.3 Mutual probe coupling MSC
I.2.3.1 General
I.2.3.2 Evaluation of mutual probe coupling for independently-calibrated probes
160 I.2.3.3 Evaluation of mutual probe coupling for probe arrays using compensation
I.2.4 Scattering due to the presence of the array AS
I.2.4.1 General
161 I.2.4.2 Evaluation of array scattering for independently-calibrated probes
I.2.4.3 Evaluation of array scattering for systems using compensation
162 I.2.5 System linearity LIN
I.2.6 Sensitivity limit SL
I.2.7 Boundary effect BE
163 I.2.8 Readout electronics RE
I.2.9 Response time RT
I.2.10 Probe positioning / position PP
164 I.2.11 Sampling error SE
165 I.2.12 Phantom shell PS
I.2.13 Array boundaries AB
166 I.2.14 Tissue-equivalent medium dielectric properties MAT
I.2.14.1 General
I.2.14.2 Medium mass density
I.2.14.3 Medium conductivity
I.2.14.4 Medium relative permittivity
167 I.2.14.5 Medium temperature
168 I.2.15 Phantom homogeneity HOM
I.2.16 Measurement system immunity/secondary reception MSI
I.3 Uncertainty of reconstruction, corrections and post-processing typically to be assessed and documented by the system manufacturer MN
I.3.1 Evaluation of uncertainty due to reconstruction REC
169 I.3.2 Impact of noise on reconstruction POL
I.3.3 SAR averaging SAV
170 I.3.4 SAR scaling SARS
I.3.5 Power sharing scheme PSH
171 I.3.6 SAR combining SCB
172 I.3.7 SAR correction for deviations in permittivity and conductivity SC
I.4 Uncertainties that are dependent on the DUT typically to be assessed and documented by the system manufacturer MD
I.4.1 Probe or probe array coupling with the DUT PC
I.4.1.1 Scanning systems
I.4.1.2 Array systems
174 I.4.2 Modulation response MOD
175 I.4.3 Broadband Signal BBS
177 I.4.4 Integration time IT
I.4.5 Measured SAR drift SD
I.4.6 Data acquisition bandwidth DAB
178 I.5 Uncertainties related to the measurement environment typically to be assessed and documented by the user of the system ME
I.5.1 Device holder DH
I.5.2 Device positioning DP
I.5.3 RF ambient conditions AC
179 I.5.4 Measurement system drift and noise DN
180 I.6 Uncertainties of validation antennas MV
I.6.1 Deviation of experimental antennas DEX
I.6.2 Power measurement uncertainty PMU
I.6.3 Other uncertainty contributions when using validation antennas OVS
181 Annex J (informative) Analytical reference functions
J.1 Reference functions
182 J.2 Supplemental files for reference functions
184 Annex K (informative) Validation procedure and test set selection concept
K.1 General
K.2 Concept
186 K.3 System-specific aspects
K.3.1 General
K.3.2 Direct measurement scanning systems using broadband spectral integration probes
188 K.3.3 Array systems using field reconstruction methods
189 K.4 GPI model creation
K.4.1 Test set generation
K.4.2 Measurement
K.4.3 Analysis and model creation
191 K.5 GPI model confirmation
K.6 Critical data space search
192 Annex L (informative) Gaussian process interpolation
L.1 General
L.2 Gaussian processes
194 L.3 Kriging
L.3.1 General
195 L.3.2 Ordinary Kriging
L.4 Anisotropic models
196 L.5 An approach to thresholding
198 L.6 Searching for out of bound regions
L.6.1 General
200 L.6.2 Example
L.6.2.1 General
203 L.6.2.2 Discussion
204 L.7 Sample size evaluation
L.7.1 General
L.7.2 Semivariogram modelling
206 L.7.3 Searching out of bound elements
208 L.8 Model validation
L.8.1 General
209 L.8.2 Goodness of fit
210 L.8.3 Residuals validation
211 L.9 Data example
213 Annex M (informative) E-Field frequency-dependent SAR expressions for narrowband, wideband, and multiple-uplink RF-spectra emissions from a DUT
215 Bibliography

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