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 1528: Human models, instrumentation, and procedures (Frequency range of 4 MHz to 10 GHz)

Identical adoption of future IEC/IEEE 62209-1528 into EN IEC/IEEE 62209-1528.

Messverfahren für die Beurteilung der spezifischen Absorptionsrate bei der Exposition von Personen gegenüber hochfrequenten Feldern von handgehaltenen und am Körper getragenen schnurlosen Kommunikationsgeräten - Teil 1528: Körpermodelle, Messgeräte und -verfahren (Frequenzbereich von 4 MHz bis 10 GHz)

Procédure de mesure pour l'évaluation du débit d'absorption spécifique de l'exposition humaine aux champs radiofréquence produits par les dispositifs de communications sans fil tenus à la main ou portés près du corps - Partie 1528: Modèles de corps humain, instrumentation et procédures (plage de fréquences comprise entre 4 MHz et 10 GHz)

Merilni postopki za ocenjevanje stopnje specifične absorpcije pri izpostavljenosti ljudi elektromagnetnim sevanjem brezžičnih komunikacijskih naprav, ki se držijo v roki ali pritrdijo na telo - 1528. del: Modeli človeka, instrumenti in postopki (frekvenčno območje od 4 MHz do 10 GHz)

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Due Date
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SLOVENSKI STANDARD
oSIST prEN IEC/IEEE 62209-1528:2020
01-november-2020

Merilni postopki za ocenjevanje stopnje specifične absorpcije pri izpostavljenosti

ljudi elektromagnetnim sevanjem brezžičnih komunikacijskih naprav, ki se držijo v

roki ali pritrdijo na telo - 1528. del: Modeli človeka, instrumenti in postopki
(frekvenčno območje od 4 MHz do 10 GHz)
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 - Part 1528: Human models, instrumentation and procedures
(Frequency range of 4 MHz to 10 GHz)
Ta slovenski standard je istoveten z: prEN IEC/IEEE 62209-1528
ICS:
13.280 Varstvo pred sevanjem Radiation protection
33.050.10 Telefonska oprema Telephone equipment
oSIST prEN IEC/IEEE 62209-1528:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC/IEEE 62209-1528:2020
106/514/FDIS
FINAL DRAFT INTERNATIONAL STANDARD (FDIS)
PROJECT NUMBER:
IEC/IEEE 62209-1528 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2020-04-10 2020-05-22
SUPERSEDES DOCUMENTS:
106/464/CDV, 106/475C/RVC

IEC TC 106 : METHODS FOR THE ASSESSMENT OF ELECTRIC, MAGNETIC AND ELECTROMAGNETIC FIELDS ASSOCIATED WITH HUMAN

EXPOSURE
SECRETARIAT: SECRETARY:
Germany Mr Diego Cuartielles
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL STANDARD:
TC 9,TC 27,TC 29,TC 34,SC 62A,SC 62B,TC 69,TC
77,TC 79,TC 96,TC 100,TC 124,CISPR
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY

SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING

This document is a draft distributed for approval. It may not be referred to as an International Standard until published as

such.

In addition to their evaluation as being acceptable for industrial, technological, commercial and user purposes, Final Draft

International Standards may on occasion have to be considered in the light of their potential to become standards to which

reference may be made in national regulations.

Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they

are aware and to provide supporting documentation.
TITLE:

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 - Part 1528: Human

models, instrumentation and procedures (Frequency range of 4 MHz to 10 GHz)
PROPOSED STABILITY DATE: 2022
NOTE FROM TC/SC OFFICERS:

Copyright © 2020 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this

electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.

You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without

permission in writing from IEC.
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CONTENTS

FOREWORD ......................................................................................................................... 14

INTRODUCTION ................................................................................................................... 17

1 Scope ............................................................................................................................ 18

2 Normative references .................................................................................................... 18

3 Terms and definitions .................................................................................................... 18

4 Symbols and abbreviated terms ..................................................................................... 26

4.1 Physical quantities ................................................................................................ 26

4.2 Constants ............................................................................................................. 26

4.3 Abbreviated terms ................................................................................................. 27

5 Quick start guide and evaluation plan checklist .............................................................. 28

6 Measurement system specifications ............................................................................... 30

6.1 General requirements for full SAR testing ............................................................. 30

6.2 Phantom specifications ......................................................................................... 31

6.2.1 General ......................................................................................................... 31

6.2.2 Basic phantom parameters ............................................................................ 31

6.2.3 Head phantom ............................................................................................... 33

6.2.4 Flat phantom ................................................................................................. 34

6.2.5 Device-specific phantoms .............................................................................. 35

6.3 Influence of hand on SAR in head ......................................................................... 35

6.4 Scanning system requirements ............................................................................. 36

6.5 Device holder specifications .................................................................................. 36

6.6 Characteristics of the readout electronics ............................................................. 37

7 Protocol for SAR assessment ........................................................................................ 37

7.1 General ................................................................................................................. 37

7.2 Measurement preparation ..................................................................................... 37

7.2.1 Preparation of tissue-equivalent medium and system check........................... 37

7.2.2 Preparation of the wireless communication DUT ............................................ 38

7.2.3 DUT operating mode requirements ................................................................ 38

7.2.4 Positioning of the DUT relative to the phantom .............................................. 40

7.2.5 Antenna configurations .................................................................................. 57

7.2.6 Options and accessories ................................................................................ 57

7.2.7 DUTs with alternative form factor ................................................................... 57

7.2.8 Test frequencies for DUTs ............................................................................. 58

7.3 Tests to be performed for DUTs ............................................................................ 58

7.3.1 General ......................................................................................................... 58

7.3.2 Basic approach for DUT testing ..................................................................... 59

7.4 Measurement procedure ....................................................................................... 60

7.4.1 General ......................................................................................................... 60

7.4.2 Full SAR testing procedure ............................................................................ 60

7.4.3 Drift ............................................................................................................... 64

7.4.4 SAR measurements of DUTs with multiple antennas or multiple

transmitters ................................................................................................... 66

7.5 Post-processing of SAR measurement data .......................................................... 72

7.5.1 Interpolation .................................................................................................. 72

7.5.2 Extrapolation ................................................................................................. 72

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7.5.3 Definition of the averaging volume ................................................................. 72

7.5.4 Searching for the maxima .............................................................................. 73

7.6 Time-period averaged SAR considerations............................................................ 73

7.6.1 General ......................................................................................................... 73

7.6.2 RF conducted power ...................................................................................... 73

7.6.3 Time-period averaged SAR measurement settings for SAR

measurement methods .................................................................................. 73

7.6.4 Exposure condition and test position considerations ...................................... 74

7.6.5 Time-period averaged SAR for simultaneous transmission ............................. 74

7.6.6 TX factor assessment .................................................................................... 74

7.6.7 SAR measurements ....................................................................................... 75

7.6.8 Uncertainty in TPAS evaluations .................................................................... 75

7.7 Proximity sensors considerations .......................................................................... 76

7.7.1 General ......................................................................................................... 76

7.7.2 Procedures for determining proximity sensor triggering distances .................. 77

7.7.3 Procedure for determining proximity sensor coverage area ............................ 80

7.7.4 SAR measurement procedure involving proximity sensors ............................. 81

7.8 SAR correction for deviations of complex permittivity from targets ........................ 81

7.8.1 General ......................................................................................................... 81

7.8.2 SAR correction formula .................................................................................. 82

7.8.3 Uncertainty of the correction formula ............................................................. 83

7.9 Minimization of testing time ................................................................................... 83

7.9.1 General ......................................................................................................... 83

7.9.2 Fast SAR testing............................................................................................ 84

7.9.3 SAR test reductions ....................................................................................... 89

8 Measurement uncertainty estimation............................................................................ 100

8.1 General ............................................................................................................... 100

8.2 Requirements on the uncertainty evaluation ........................................................ 101

8.3 Description of uncertainty models ....................................................................... 102

8.3.1 General ....................................................................................................... 102

8.3.2 SAR measurement of a DUT ........................................................................ 102

8.3.3 System validation and system check measurement ...................................... 102

8.3.4 System check repeatability and reproducibility ............................................. 102

8.3.5 Fast SAR testing (relative measurement) ..................................................... 102

8.4 Parameters contributing to uncertainty ................................................................ 104

8.4.1 Measurement system errors......................................................................... 104

8.4.2 Phantom and device (DUT or validation antenna) errors .............................. 105

8.4.3 Corrections to the SAR result (if applied) ..................................................... 107

9 Measurement report .................................................................................................... 108

9.1 General ............................................................................................................... 108

9.2 Items to be recorded in the measurement report ................................................. 108

Annex A (normative) SAR measurement system verification .............................................. 112

A.1 Overview............................................................................................................. 112

A.2 System check ..................................................................................................... 112

A.2.1 Purpose ....................................................................................................... 112

A.2.2 Phantom set-up ........................................................................................... 113

A.2.3 System check antenna ................................................................................. 113

A.2.4 System check antenna input power measurement ........................................ 114

A.2.5 System check procedure .............................................................................. 115

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A.2.6 System check acceptance criteria ................................................................ 116

A.3 System validation ................................................................................................ 116

A.3.1 Purpose ....................................................................................................... 116

A.3.2 Phantom set-up ........................................................................................... 116

A.3.3 System validation antennas ......................................................................... 116

A.3.4 Input power measurement ........................................................................... 117

A.3.5 System validation procedure ........................................................................ 117

A.4 Fast SAR testing system validation and system check ........................................ 119

A.4.1 General ....................................................................................................... 119

A.4.2 Fast SAR testing system validation .............................................................. 119

A.4.3 Fast SAR testing system check .................................................................... 120

Annex B (informative) SAR test reduction supporting information ....................................... 122

B.1 General ............................................................................................................... 122

B.2 Test reduction based on characteristics of DUT design ....................................... 122

B.2.1 General ....................................................................................................... 122

B.2.2 Statistical analysis overview ........................................................................ 122

B.2.3 Analysis results ........................................................................................... 123

B.2.4 Conclusions ................................................................................................. 126

B.2.5 Expansion to multi-transmission antennas ................................................... 126

B.3 Test reduction based on analysis of SAR results on other signal modulations ..... 126

B.3.1 General ....................................................................................................... 126

B.3.2 Analysis results ........................................................................................... 127

B.4 Test reduction based on SAR level analysis ........................................................ 128

B.4.1 General ....................................................................................................... 128

B.4.2 Statistical analysis ....................................................................................... 129

B.4.3 Test reduction applicability example ............................................................ 132

B.5 Other statistical approaches to search for the high SAR test configurations ........ 134

B.5.1 General ....................................................................................................... 134

B.5.2 Test reductions based on a DOE ................................................................. 134

B.5.3 One factor at a time (OFAT) search ............................................................. 134

B.5.4 Analysis of unstructured data ....................................................................... 134

Annex C (informative) Measurement uncertainty of results obtained from specific fast

SAR testing methods .......................................................................................................... 135

C.1 General ............................................................................................................... 135

C.2 Measurement uncertainty evaluation – contributing parameters .......................... 135

C.2.1 General ....................................................................................................... 135

C.2.2 Probe calibration and system calibration drift ............................................... 136

C.2.3 Isotropy ....................................................................................................... 136

C.2.4 Probe positioning ......................................................................................... 137

C.2.5 Mutual sensor coupling ................................................................................ 138

C.2.6 Scattering within the probe array ................................................................. 139

C.2.7 Sampling error ............................................................................................. 139

C.2.8 Array boundaries ......................................................................................... 139

C.2.9 Probe or probe array coupling with the DUT ................................................ 139

C.2.10 Measurement system immunity / secondary reception ................................. 139

C.2.11 Deviations in phantom shape ....................................................................... 140

C.2.12 Spatial variation in dielectric properties ....................................................... 140

C.2.13 Reconstruction ............................................................................................ 140

C.3 Uncertainty budget .............................................................................................. 140

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Annex D (normative) SAR system validation antennas ....................................................... 143

D.1 General antenna requirements ............................................................................ 143

D.2 Standard dipole antenna ..................................................................................... 143

D.2.1 Mechanical description ................................................................................ 143

D.2.2 Numerical target SAR values ....................................................................... 146

D.3 Standard waveguide ........................................................................................... 148

D.3.1 Mechanical description ................................................................................ 148

D.3.2 Numerical target SAR values ....................................................................... 149

D.4 System validation antennas for below 150 MHz .................................................. 149

D.4.1 General ....................................................................................................... 149

D.4.2 Confined loop antenna ................................................................................. 150

D.4.3 Meander dipole antenna .............................................................................. 152

D.5 Orthogonal E-field source – VPIFA ..................................................................... 153

D.5.1 Mechanical description ................................................................................ 153

D.5.2 Numerical target SAR values ....................................................................... 156

Annex E (normative) Calibration and characterization of dosimetric (SAR) probes ............. 157

E.1 Introductory remarks ........................................................................................... 157

E.2 Linearity .............................................................................................................. 158

E.3 Assessment of the sensitivity of the dipole sensors ............................................. 158

E.3.1 General ....................................................................................................... 158

E.3.2 Two-step calibration procedures .................................................................. 158

E.3.3 One-step calibration procedure – reference antenna method ....................... 164

E.3.4 One-step calibration procedure – coaxial calorimeter method ...................... 168

E.4 Isotropy .............................................................................................................. 170

E.4.1 Axial isotropy ............................................................................................... 170

E.4.2 Hemispherical isotropy ................................................................................ 170

E.5 Lower detection limit ........................................................................................... 175

E.6 Boundary effect................................................................................................... 176

E.7 Response time .................................................................................................... 176

Annex F (informative) Example recipes for phantom tissue-equivalent media ..................... 177

F.1 General ............................................................................................................... 177

F.2 Ingredients .......................................................................................................... 177

F.3 Tissue-equivalent medium liquid formulas (permittivity/conductivity) ................... 178

Annex G (normative) Phantom specifications ..................................................................... 180

G.1 Rationale for the phantom characteristics ........................................................... 180

G.1.1 General ....................................................................................................... 180

G.1.2 Rationale for the SAM phantom ................................................................... 180

G.1.3 Rationale for the flat phantom ...................................................................... 180

G.2 SAM phantom specifications ............................................................................... 181

G.2.1 General SAM phantom specifications........................................................... 181

G.2.2 SAM phantom shell specification ................................................................. 185

G.3 Flat phantom specifications ................................................................................. 187

G.4 Justification of flat phantom dimensions .............................................................. 188

G.5 Rationale for tissue-equivalent media ................................................................. 191

G.6 Definition of a phantom coordinate system and a DUT coordinate system ........... 193

Annex H (informative) Measurement of the dielectric properties of tissue-equivalent

media and uncertainty estimation ........................................................................................ 195

H.1 Overview............................................................................................................. 195

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H.2 Measurement techniques .................................................................................... 195

H.2.1 General ....................................................................................................... 195

H.2.2 Instrumentation ............................................................................................ 195

H.2.3 General principles ....................................................................................... 195

H.3 Slotted coaxial transmission line ......................................................................... 196

H.3.1 General ....................................................................................................... 196

H.3.2 Equipment set-up ........................................................................................ 196

H.3.3 Measurement procedure .............................................................................. 197

H.4 Contact coaxial probe ......................................................................................... 197

H.4.1 General ....................................................................................................... 197

H.4.2 Equipment set-up ........................................................................................ 198

H.4.3 Measurement procedure .............................................................................. 199

H.5 TEM transmission line ......................................................................................... 199

H.5.1 General ....................................................................................................... 199

H.5.2 Equipment set-up ........................................................................................ 200

H.5.3 Measurement procedure .............................................................................. 200

H.6 Dielectric properties of reference liquids ............................................................. 201

Annex I (informative) Studies for potential hand effects on head SAR ................................ 204

I.1 Overview............................................................................................................. 204

I.2 Background......................................................................................................... 204

I.2.1 General ....................................................................................................... 204

I.2.2 Hand phantoms ........................................................................................... 205

I.3 Summary of experimental studies ....................................................................... 205

I.3.1 Experimental studies using fully compliant SAR measurement systems ....... 205

I.3.2 Experimental studies using other SAR measurement systems ..................... 205

I.4 Summary of computational studies ...................................................................... 206

I.5 Conclusions ........................................................................................................ 206

Annex J (informative) Skin enhancement factor ................................................................. 207

J.1 Background......................................................................................................... 207

J.2 Rationale ............................................................................................................ 208

J.3 Simulations ......................................................................................................... 208

J.4 Recommendation ................................................................................................ 209

Annex K (normative) Application-specific phantoms ........................................................... 211

K.1 General ............................................................................................................... 211

K.2 Phantom basic requirements ............................................................................... 211

K.3 Examples of specific alternative phantoms .......................................................... 211

K.3.1 Face-down SAM phantom .....................................
...

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