BS EN IEC/IEEE 62209-1528:2021
$215.11
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 – Human models, instrumentation, and procedures (Frequency range of 4 MHz to 10 GHz)
| Published By | Publication Date | Number of Pages |
| BSI | 2021 | 286 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 5 | Annex ZA (normative)Normative references to international publicationswith their corresponding European publications |
| 7 | English CONTENTS |
| 19 | FOREWORD |
| 22 | INTRODUCTION |
| 23 | 1 Scope 2 Normative references 3 Terms and definitions |
| 31 | 4 Symbols and abbreviated terms 4.1 Physical quantities 4.2 Constants |
| 32 | 4.3 Abbreviated terms |
| 33 | 5 Quick start guide and evaluation plan checklist Tables Table 1 โ Evaluation plan checklist |
| 34 | Figures Figure 1 โ Quick start guide |
| 35 | 6 Measurement system specifications 6.1 General requirements for full SAR testing |
| 36 | 6.2 Phantom specifications 6.2.1 General 6.2.2 Basic phantom parameters |
| 37 | Table 2 โ Dielectric properties of the tissue-equivalent medium |
| 38 | 6.2.3 Head phantom |
| 39 | 6.2.4 Flat phantom |
| 40 | 6.2.5 Device-specific phantoms 6.3 Influence of hand on SAR in head Figure 2 โ Dimensions of the elliptical phantom |
| 41 | 6.4 Scanning system requirements 6.5 Device holder specifications |
| 42 | 6.6 Characteristics of the readout electronics 7 Protocol for SAR assessment 7.1 General 7.2 Measurement preparation 7.2.1 Preparation of tissue-equivalent medium and system check Figure 3 โ Mounting of the DUT in the device holder using low-permittivity andlow-loss foam to avoid changes of DUT performance by the holder material |
| 43 | 7.2.2 Preparation of the wireless communication DUT 7.2.3 DUT operating mode requirements |
| 45 | 7.2.4 Positioning of the DUT relative to the phantom |
| 46 | Figure 4 โ Designation of DUT reference points |
| 47 | Figure 5 โ Measurements performed by shifting a large deviceover the efficient measurement area of the system includingoverlapping areas โ in this case: six tests performed |
| 48 | Figure 6 โ Test positions for body-worn devices |
| 49 | Figure 7 โ Device with swivel antenna |
| 50 | Figure 8 โ Test positions for body supported devices |
| 52 | Figure 9 โ Test positions for desktop devices |
| 53 | Figure 10 โ Test positions for front-of-face devices |
| 54 | Figure 11 โ Test position for hand-held devices, not used at the head or torso Figure 12 โ Test position for limb-worn devices |
| 55 | Figure 13 โ Test position for clothing-integrated wireless communication devices |
| 56 | Figure 14 โ Possible test positions for a generic device |
| 58 | Figure 15 โ Vertical and horizontal reference lines and referencepoints A and B on two example device types: a full touch-screensmart phone (left) and a DUT with a keypad (right) |
| 61 | Figure 16 โ Cheek position of the DUT on the left side of SAM wherethe device position shall be maintained for the phantom test set-up Figure 17 โ Tilt position of the DUT on the left side of SAM |
| 62 | 7.2.5 Antenna configurations 7.2.6 Options and accessories 7.2.7 DUTs with alternative form factor Figure 18 โ An alternative form factor DUT with reference points and reference lines |
| 63 | 7.2.8 Test frequencies for DUTs 7.3 Tests to be performed for DUTs 7.3.1 General |
| 64 | 7.3.2 Basic approach for DUT testing |
| 65 | 7.4 Measurement procedure 7.4.1 General 7.4.2 Full SAR testing procedure Figure 19 โ Block diagram of the tests to be performed |
| 68 | Table 3 โ Area scan parameters Table 4 โ Zoom scan parameters |
| 69 | 7.4.3 Drift Figure 20 โ Orientation of the probe with respect to the line normal to the phantom surface, for head and flat phantoms, shown at two different locations |
| 71 | 7.4.4 SAR measurements of DUTs with multiple antennas or multiple transmitters |
| 75 | Table 5 โ Example method to determine the combined SAR value using Alternative 1 |
| 77 | 7.5 Post-processing of SAR measurement data 7.5.1 Interpolation 7.5.2 Extrapolation 7.5.3 Definition of the averaging volume Figure 21 โ Measurement procedure for different types of correlated signals |
| 78 | 7.5.4 Searching for the maxima 7.6 Time-period averaged SAR considerations 7.6.1 General 7.6.2 RF conducted power 7.6.3 Time-period averaged SAR measurement settings for SAR measurement methods |
| 79 | 7.6.4 Exposure condition and test position considerations 7.6.5 Time-period averaged SAR for simultaneous transmission 7.6.6 TX factor assessment |
| 80 | 7.6.7 SAR measurements 7.6.8 Uncertainty in TPAS evaluations |
| 81 | 7.7 Proximity sensors considerations 7.7.1 General |
| 82 | 7.7.2 Procedures for determining proximity sensor triggering distances |
| 84 | Figure 22 โ Positioning of the surfaces and edges of the DUTfor determining the proximity sensor triggering distance |
| 85 | 7.7.3 Procedure for determining proximity sensor coverage area Figure 23 โ Positioning of the edges of the DUT to determineproximity sensor triggering distance variations with the edgepositioned at different angles from the perpendicular position |
| 86 | 7.7.4 SAR measurement procedure involving proximity sensors 7.8 SAR correction for deviations of complex permittivity from targets 7.8.1 General |
| 87 | 7.8.2 SAR correction formula |
| 88 | 7.8.3 Uncertainty of the correction formula 7.9 Minimization of testing time 7.9.1 General Table 6 โ Root-mean-squared error SAR correction formula as afunction of the maximum change in permittivity or conductivity [28] |
| 89 | 7.9.2 Fast SAR testing |
| 92 | Figure 24 โ Fast SAR Procedure A |
| 94 | 7.9.3 SAR test reductions Figure 25 โ Fast SAR Procedure B |
| 98 | Figure 26 โ Modified chart of Figure 19 Table 7 โ Threshold values TH(f) used in this proposed test reduction protocol |
| 102 | Figure 27 โ Use of conducted power for LTE mode selection,for Band 1 (1 920 MHz to 1 980 MHz) (MPR values are in dB) |
| 103 | Figure 28 โ Use of conducted power for LTE modeselection, for Band 17 (704 MHz to 716 MHz) (MPR values are in dB) |
| 105 | 8 Measurement uncertainty estimation 8.1 General |
| 106 | 8.2 Requirements on the uncertainty evaluation Table 8 โ Divisors for common probability density functions (PDFs) |
| 107 | 8.3 Description of uncertainty models 8.3.1 General 8.3.2 SAR measurement of a DUT 8.3.3 System validation and system check measurement 8.3.4 System check repeatability and reproducibility 8.3.5 Fast SAR testing (relative measurement) |
| 108 | Table 9 โ Uncertainty budget template for evaluating the uncertaintyin the measured value of 1โg or 10โg psSAR from a DUT or validationantenna (N = normal, R = rectangular) |
| 109 | 8.4 Parameters contributing to uncertainty 8.4.1 Measurement system errors |
| 110 | 8.4.2 Phantom and device (DUT or validation antenna) errors |
| 112 | 8.4.3 Corrections to the SAR result (if applied) Table 10 โ Uncertainty of Formula (8) (see 7.8.2) as a function ofthe maximum change in permittivity or conductivity |
| 113 | 9 Measurement report 9.1 General 9.2 Items to be recorded in the measurement report |
| 117 | Annexes Annex A (normative)SAR measurement system verification A.1 Overview A.2 System check A.2.1 Purpose |
| 118 | A.2.2 Phantom set-up A.2.3 System check antenna |
| 119 | A.2.4 System check antenna input power measurement Figure A.1 โ Test set-up for the system check |
| 120 | A.2.5 System check procedure |
| 121 | A.2.6 System check acceptance criteria A.3 System validation A.3.1 Purpose A.3.2 Phantom set-up A.3.3 System validation antennas |
| 122 | A.3.4 Input power measurement A.3.5 System validation procedure |
| 124 | A.4 Fast SAR testing system validation and system check A.4.1 General A.4.2 Fast SAR testing system validation |
| 125 | A.4.3 Fast SAR testing system check |
| 127 | Annex B (informative)SAR test reduction supporting information B.1 General B.2 Test reduction based on characteristics of DUT design B.2.1 General B.2.2 Statistical analysis overview |
| 128 | B.2.3 Analysis results Table B.1 โ The number of DUTs used for the statistical study |
| 129 | Figure B.1 โ Distribution of Tilt/Cheek Table B.2 โ Statistical analysis results ofP(Tilt/Cheek > x) for various x values Table B.3 โ Statistical analysis results ofP(Tilt/Cheek > x) for 1 g and 10 g psSAR |
| 130 | Table B.4 โ Statistical analysis results ofP(Tilt/Cheek > x) for various antenna locations Table B.5 โ Statistical analysis results ofP(Tilt/Cheek > x) for various frequency bands |
| 131 | B.2.4 Conclusions B.2.5 Expansion to multi-transmission antennas B.3 Test reduction based on analysis of SAR results on other signal modulations B.3.1 General Table B.6 โ Statistical analysis results ofP(Tilt/Cheek > x) for various device types |
| 132 | B.3.2 Analysis results |
| 133 | B.4 Test reduction based on SAR level analysis B.4.1 General Figure B.2 โ SAR relative to SAR in position with maximum SAR in GSM mode |
| 134 | B.4.2 Statistical analysis |
| 135 | Figure B.3 โ Two points identifying the minimum distance between theposition of the interpolated maximum SAR and the points at 0,6 ร SARmax Figure B.4 โ Histogram for Dmin in the case of GSM 900 and iso-level at 0,6 ร SARmax Table B.7 โ Distance D*min for various โiso-levelโ values |
| 137 | B.4.3 Test reduction applicability example Figure B.5 โ Histogram for random variable Factor1g,1800 Table B.8 โ Experimental thresholds to have a 95 % probability that themaximum measured SAR value from the area scan will also have a psSAR |
| 138 | Table B.9 โ SAR values from the area scan (GSM 900 band): Example 1 Table B.10 โ SAR values from the area scan (GSM 900 band): Example 2 |
| 139 | B.5 Other statistical approaches to search for the high SAR test configurations B.5.1 General B.5.2 Test reductions based on a DOE B.5.3 One factor at a time (OFAT) search B.5.4 Analysis of unstructured data |
| 140 | Annex C (informative)Measurement uncertainty of results obtained fromspecific fast SAR testing methods C.1 General C.2 Measurement uncertainty evaluation โ contributing parameters C.2.1 General |
| 141 | C.2.2 Probe calibration and system calibration drift C.2.3 Isotropy |
| 142 | C.2.4 Probe positioning |
| 143 | C.2.5 Mutual sensor coupling |
| 144 | C.2.6 Scattering within the probe array C.2.7 Sampling error C.2.8 Array boundaries C.2.9 Probe or probe array coupling with the DUT C.2.10 Measurement system immunity / secondary reception |
| 145 | C.2.11 Deviations in phantom shape C.2.12 Spatial variation in dielectric properties C.2.13 Reconstruction C.3 Uncertainty budget |
| 146 | Table C.1 โ Measurement uncertainty budget for relativeSAR measurements using Class 2 fast SAR testing,for tests performed within one frequency band and modulation |
| 147 | Table C.2 โ Measurement uncertainty budget forsystem check using Class 2 fast SAR testing |
| 148 | Annex D (normative)SAR system validation antennas D.1 General antenna requirements D.2 Standard dipole antenna D.2.1 Mechanical description |
| 150 | Figure D.1 โ Mechanical details of the standard dipoles |
| 151 | D.2.2 Numerical target SAR values Table D.1 โ Mechanical dimensions of the reference dipoles |
| 152 | Table D.2 โ Numerical target SAR values (W/kg) for standard dipole and flat phantom |
| 153 | D.3 Standard waveguide D.3.1 Mechanical description Figure D.2 โ Standard waveguide (dimensions are according to Table D.3) Table D.3 โ Mechanical dimensions of the standard waveguide |
| 154 | D.3.2 Numerical target SAR values D.4 System validation antennas for below 150 MHz D.4.1 General Table D.4 โ Numerical target SAR values for waveguides |
| 155 | D.4.2 Confined loop antenna Figure D.3 โ Drawing of the CLA that corresponds to a resonant loop integratedin a metallic structure to isolate the resonant structure from the environment |
| 156 | Table D.5 โ Numerical target SAR values for CLAs |
| 157 | D.4.3 Meander dipole antenna Figure D.4 โ Mechanical details of the meander dipoles for 150 MHz Table D.6 โ Mechanical dimensions of the reference meander dipole |
| 158 | D.5 Orthogonal E-field source โ VPIFA D.5.1 Mechanical description Table D.7 โ Numerical target SAR value (W/kg) for meander dipole |
| 159 | Table D.8 โ Dimensions for VPIFA antennas at different frequencies |
| 160 | Figure D.5 โ VPIFA validation antenna Figure D.6 โ Mask for positioning VPIFAs Table D.9 โ Electric properties for the dielectric layers for VPIFA antennas |
| 161 | D.5.2 Numerical target SAR values Table D.10 โ Numerical target SAR values for VPIFAs on the flat phantom |
| 162 | Annex E (normative)Calibration and characterization of dosimetric (SAR) probes E.1 Introductory remarks |
| 163 | E.2 Linearity E.3 Assessment of the sensitivity of the dipole sensors E.3.1 General E.3.2 Two-step calibration procedures |
| 165 | Table E.1 โ Uncertainty analysis for transfer calibration using temperature probes |
| 167 | Figure E.1 โ Experimental set-up for assessment of the sensitivity(conversion factor) using a vertically-oriented rectangular waveguide |
| 168 | Table E.2 โ Guidelines for designing calibration waveguides |
| 169 | E.3.3 One-step calibration procedure โ reference antenna method Table E.3 โ Uncertainty analysis of the probe calibration in waveguide |
| 170 | Figure E.2 โ Illustration of the antenna gain evaluation set-up |
| 171 | Table E.4 โ Uncertainty template for evaluation of reference antenna gain |
| 172 | Table E.5 โ Uncertainty template for calibration using reference antenna |
| 173 | E.3.4 One-step calibration procedure โ coaxial calorimeter method |
| 174 | Figure E.3 โ Schematic of the coaxial calorimeter system |
| 175 | E.4 Isotropy E.4.1 Axial isotropy E.4.2 Hemispherical isotropy Table E.6 โ Uncertainty components for probe calibration using thermal methods |
| 176 | Figure E.4 โ Set-up to assess hemisphericalisotropy deviation in tissue-equivalent medium |
| 177 | Figure E.5 โ Alternative set-up to assess hemisphericalisotropy deviation in tissue-equivalent medium |
| 178 | Figure E.6 โ Experimental set-up for thehemispherical isotropy assessment |
| 179 | Figure E.7 โ Conventions for dipole position (ฮพ) and polarization (ฮธ) |
| 180 | E.5 Lower detection limit Figure E.8 โ Measurement of hemispherical isotropy with reference antenna |
| 181 | E.6 Boundary effect E.7 Response time |
| 182 | Annex F (informative)Example recipes for phantom tissue-equivalent media F.1 General F.2 Ingredients |
| 183 | F.3 Tissue-equivalent medium liquid formulas (permittivity/conductivity) Table F.1 โ Suggested recipes for achievingtarget dielectric properties, 30 MHz to 900 MHz |
| 184 | Table F.2 โ Suggested recipes for achieving targetdielectric properties, 1 800 MHz to 10 000 MHz |
| 185 | Annex G (normative)Phantom specifications G.1 Rationale for the phantom characteristics G.1.1 General G.1.2 Rationale for the SAM phantom G.1.3 Rationale for the flat phantom |
| 186 | G.2 SAM phantom specifications G.2.1 General SAM phantom specifications |
| 187 | Figure G.1 โ Illustration of dimensions in Table G.1 and Table G.2 |
| 188 | Table G.1 โ Dimensions used in deriving SAM phantom fromthe ARMY 90th percentile male head data (Gordon et al. [61]) Table G.2 โ Additional SAM dimensions compared with selecteddimensions from the ARMY 90th percentile male head data(Gordon et al. [61]) โ specialist head measurement section |
| 189 | Figure G.2 โ Close up side view of phantom showing the ear region |
| 190 | G.2.2 SAM phantom shell specification Figure G.3 โ Side view of the phantom showing relevant markings |
| 191 | Figure G.4 โ Sagittally bisected phantom with extended perimeter(shown placed on its side as used for device SAR tests) Figure G.5 โ Picture of the phantom showing the central strip |
| 192 | G.3 Flat phantom specifications Figure G.6 โ Cross-sectional view of SAM at the reference plane |
| 193 | G.4 Justification of flat phantom dimensions |
| 194 | Figure G.7 โ Dimensions of the flat phantom set-up used for deriving theminimal phantom dimensions for W and L for a given phantom depth D |
| 195 | Figure G.8 โ FDTD predicted error in the 10 g psSAR as a function of the dimensions of the flat phantom compared with an infinite flat phantom at 800 MHz Table G.3 โ Parameters used for calculation of reference SAR values in Table D.2 |
| 196 | G.5 Rationale for tissue-equivalent media |
| 198 | G.6 Definition of a phantom coordinate system and a DUT coordinate system Figure G.9 โ Complex permittivity of human tissuescompared to the phantom target properties |
| 199 | Figure G.10 โ Example reference coordinate systemfor the left-ear ERP of the SAM phantom Figure G.11 โ Example coordinate system on a DUT |
| 200 | Annex H (informative)Measurement of the dielectric properties of tissue-equivalent media and uncertainty estimation H.1 Overview H.2 Measurement techniques H.2.1 General H.2.2 Instrumentation H.2.3 General principles |
| 201 | H.3 Slotted coaxial transmission line H.3.1 General H.3.2 Equipment set-up Figure H.1 โ Slotted line set-up |
| 202 | H.3.3 Measurement procedure H.4 Contact coaxial probe H.4.1 General |
| 203 | H.4.2 Equipment set-up Figure H.2 โ An open-ended coaxial probe with inner and outer radii a and b, respectively |
| 204 | H.4.3 Measurement procedure H.5 TEM transmission line H.5.1 General |
| 205 | H.5.2 Equipment set-up H.5.3 Measurement procedure Figure H.3 โ TEM line dielectric properties test set-up [85] |
| 206 | H.6 Dielectric properties of reference liquids |
| 207 | Table H.1 โ Parameters for calculating thedielectric properties of various reference liquids |
| 208 | Table H.2 โ Dielectric properties of reference liquids at 20 ยฐC |
| 209 | Annex I (informative)Studies for potential hand effects on head SAR I.1 Overview I.2 Background I.2.1 General |
| 210 | I.2.2 Hand phantoms I.3 Summary of experimental studies I.3.1 Experimental studies using fully compliant SAR measurement systems I.3.2 Experimental studies using other SAR measurement systems |
| 211 | I.4 Summary of computational studies I.5 Conclusions |
| 212 | Annex J (informative)Skin enhancement factor J.1 Background Figure J.1 โ SAR and temperature increase (ฮT) distributionssimulated for a three-layer (skin, fat, muscle) planar torso model |
| 213 | J.2 Rationale J.3 Simulations |
| 214 | J.4 Recommendation Figure J.2 โ Statistical approach to protect 90 % of the population Table J.1 โpsSAR correction factors |
| 215 | Figure J.3 โ psSAR skin enhancement factors |
| 216 | Annex K (normative)Application-specific phantoms K.1 General K.2 Phantom basic requirements K.3 Examples of specific alternative phantoms K.3.1 Face-down SAM phantom |
| 217 | K.3.2 Head-stand SAM phantom K.3.3 Wrist phantom Figure K.1 โ SAM face-down phantom Figure K.2 โ SAM head-stand phantom |
| 218 | K.4 Scanning and evaluation requirements K.5 Uncertainty assessment K.6 Reporting Figure K.3 โ Wrist phantom |
| 219 | Annex L (normative)Fast compliance evaluations using a flat-bottomphantom with a curved corner (Uniphantom) L.1 General L.2 Uniphantom L.3 Device positions for compliance testing and definitions of handset shapes L.3.1 General Figure L.1 โ Cross section of the unified phantom (Uniphantom) with its dimensions |
| 220 | L.3.2 Handsets with a straight form factor L.3.3 Handsets with a clamshell form factor L.4 Testing procedure L.4.1 General L.4.2 Handsets with straight form factors Figure L.2 โ Measurement positions of handsets withstraight and clamshell form factors |
| 221 | L.4.3 Handsets with clamshell form factors Figure L.3 โ Flow chart of testing procedure for handsets with straight form factors |
| 222 | L.5 Uncertainty of SAR measurement results using Uniphantom |
| 223 | Annex M (informative)Wired hands-free headset testing M.1 Concept Figure M.1 โ Configuration of a personal wired hands-free headset |
| 224 | M.2 Example results Figure M.2 โ Configuration without a personal wired hands-free headset |
| 225 | M.3 Discussion |
| 226 | Annex N (informative)Applying the head SAR test procedures Table N.1 โ SAR results tables for example test results in GSM 850 band |
| 227 | Table N.2 โ SAR results tables for example test results in GSM 900 band Table N.3 โ SAR results tables for example test results in GSM 1800 band |
| 228 | Table N.4 โ SAR results tables for example test results in GSM 1900 band |
| 229 | Annex O (normative)Uncertainty analysis for measurement systemmanufacturers and calibration laboratories O.1 Probe linearity and detection limits |
| 230 | O.2 Broadband signal uncertainty O.3 Boundary effect |
| 231 | O.4 Field-probe readout electronics uncertainty O.5 Signal step-response time uncertainty |
| 232 | O.6 Probe integration-time uncertainty O.6.1 General O.6.2 Probe integration-time uncertainty for periodic pulsed signals |
| 233 | O.6.3 Probe integration-time uncertainty for non-periodic signals O.7 Contribution of mechanical constraints O.7.1 Mechanical tolerances of the probe positioner (directions parallel to phantom surface) O.7.2 Probe positioning with respect to phantom shell surface |
| 234 | O.7.3 First-order approximation of exponential decay O.8 Contribution of post-processing O.8.1 General |
| 235 | O.8.2 Evaluation test functions |
| 236 | Table O.1 โ Parameters for the reference function f1 in Formula (O.12) |
| 237 | O.8.3 Data-processing algorithm uncertainty evaluations Table O.2 โ Reference SAR values from the distribution functions f1, f2, and f3 |
| 240 | O.9 Tissue-equivalent medium properties uncertainty O.9.1 General O.9.2 Medium density O.9.3 Medium conductivity uncertainty O.9.4 Medium permittivity uncertainty O.9.5 Assessment of dielectric properties measurement uncertainties Figure O.1 โ Orientation and surface of averaging volume relative to phantom surface |
| 242 | O.9.6 Medium temperature uncertainty Table O.3 โ Example uncertainty template and example numericalvalues for permittivity (ฮตโฒr ) and conductivity (ฯ) measurement |
| 244 | Annex P (normative)Post-processing techniques P.1 Extrapolation and interpolation schemes P.1.1 General P.1.2 Extrapolation schemes P.1.3 Interpolation schemes P.2 Averaging scheme and maximum finding P.2.1 Volume average schemes |
| 245 | P.2.2 Finding the psSAR and estimating the uncertainty |
| 246 | Annex Q (informative)Rationale for time-period averaged SAR test procedure |
| 247 | Annex R (normative)Measurement uncertainty analysis for testing laboratories R.1 RF ambient conditions R.2 Device positioning and holder uncertainties R.2.1 General |
| 248 | R.2.2 Device holder perturbation uncertainty |
| 249 | R.2.3 DUT positioning uncertainty with a specific test device holder: Type A R.3 Probe modulation response |
| 250 | R.4 Time-period averaged SAR R.4.1 General R.4.2 TX factor uncertainty |
| 251 | R.5 Measured SAR drift R.5.1 General R.5.2 Accounting for drift |
| 252 | R.6 SAR scaling uncertainty |
| 253 | Annex S (normative)Validation antenna SAR measurement uncertainty S.1 Deviation of experimental antennas S.2 Other uncertainty contributions when using system validation antennas Table S.1 โ Uncertainties relating to the deviations ofthe parameters of the standard waveguide from theory |
| 254 | Table S.2 โ Other uncertainty contributions relatingto the dipole antennas specified in Annex D. Table S.3 โ Other uncertainty contributions relating tothe standard waveguides specified in Annex D |
| 255 | Annex T (normative)Interlaboratory comparisons T.1 Purpose T.2 Phantom set-up T.3 Reference devices T.4 Power set-up |
| 256 | T.5 Interlaboratory comparison โ procedure |
| 257 | Annex U (informative)Determination of the margin forcompliance evaluation using the Uniphantom U.1 General U.2 Deviation of the psSAR measured using the Uniphantom from the psSAR measured using the SAM phantom Figure U.1 โ Categories (classes) for comparison of the measured psSAR between the Uniphantom (SARuni) and the SAM phantom (SARSAM) |
| 258 | U.3 Determination of margin based on 95 % confidence interval U.4 Examples of the determination of the margin factor U.4.1 Margin for handsets with straight form factors at flat-bottom position |
| 259 | Figure U.2 โ Histogram of the deviation of the 10 g psSAR of 45 handsetswith straight form factors positioned at the flat bottom of the Uniphantom Table U.1 โ Summary of information to determine the margin for handsetswith straight form factors positioned at the flat bottom of the Uniphantom |
| 260 | U.4.2 Margin for handsets with straight form factors (except smart phones at flat-bottom position) Figure U.3 โ Histogram of the deviation of the 1 g psSAR of 40 handsetswith straight form factors positioned at the flat bottom of the Uniphantom |
| 261 | Figure U.4 โ Histogram of the deviation of the 10 g psSAR of 25 handsets withstraight form factors positioned at the flat bottom of the Uniphantom Table U.2 โ Summary of information to determine the margin for handsetswith straight form factors, including slide-type and bar handsets (exceptsmart phones), positioned at the flat bottom of the Uniphantom |
| 262 | U.4.3 Margin for smart phones at flat-bottom position Figure U.5 โ Histogram of the deviation of the 1 g psSAR from 20 handsets withstraight form factors positioned at the flat bottom of the Uniphantom |
| 263 | Figure U.6 โ Histogram of the deviation of the 10 g psSAR of 20 handsets with straight form factors or smart phones positioned at the flat bottom of the Uniphantom Table U.3 โ Summary of information to determine the margin for thesmart phones positioned at the flat bottom of the Uniphantom |
| 264 | U.4.4 Margin for smart phones at corner position Figure U.7 โ Histogram of the deviation of the 1 g psSAR of 20 handsets with straight form factors or smart phones positioned at the flat bottom of the Uniphantom |
| 265 | Figure U.8 โ Histogram of the deviation of the 10 g psSAR of 20 handsets with straight form factors or smart phones positioned at the corner of the Uniphantom Table U.4 โ Summary of information to determine the marginfor smart phones positioned at the corner of the Uniphantom |
| 266 | U.4.5 Margin for handsets with clamshell form factors at corner position Figure U.9 โ Histogram of the deviation of the 1 g psSAR of 19 handsets with straight form factors or smart phones positioned at the corner of the Uniphantom Table U.5 โ Statistical analysis results of P(Tilt/Cheek > x) for various device types |
| 267 | Figure U.10 โ Histogram of the deviation of the 10 g psSAR of 20 handsetswith clamshell form factors at the corner of the Uniphantom Table U.6 โ Summary of information to determine the margin for handsets with clamshell form factors positioned at the corner of the Uniphantom |
| 268 | Figure U.11 โ Histogram of the deviation of the 1 g psSAR of 19 handsetswith clamshell form factors at the corner of the Uniphantom |
| 269 | Annex V (informative)Automatic input power levelcontrol for system validation V.1 General V.2 Operational mechanism of AIPLC Figure V.1 โ Generated RF input power variations tooperation time without and with application of AIPLC |
| 270 | Figure V.2 โ The system block diagram of the AIPLC Figure V.3 โ Power variation characteristics byadjusting the amplifier or signal generator outputs |
| 271 | Annex W (informative)LTE test configurations supporting information W.1 General W.2 Study 1 |
| 272 | Figure W.1 โ Low, middle, and high channels at 2 GHz band (Band 1) Table W.1 โ Relative standard deviation of ฮฑ found in Study 1 (without MPR) |
| 273 | W.3 Study 2 Figure W.2 โ RF conducted power versus 10 g psSAR |
| 274 | W.4 Justifications of relative standard deviations Figure W.3 โ 1 g SAR as a function of RF conducted power in various test conditions Table W.2 โ Maximum relative standard deviation of ฮฑ found in Study 2 (with MPR) |
| 276 | Bibliography |
Related products
-
BS EN IEC/IEEE 62209-1528:2021
Measurement procedure for the assessment of specific absorption rate of human exposure to radio frequencyโฆ
-
BS EN 62209-2:2010+A1:2019
Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices. Human models,โฆ
