{"id":239613,"date":"2024-10-19T15:40:33","date_gmt":"2024-10-19T15:40:33","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-62209-32019\/"},"modified":"2024-10-25T10:23:02","modified_gmt":"2024-10-25T10:23:02","slug":"bs-en-iec-62209-32019","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-62209-32019\/","title":{"rendered":"BS EN IEC 62209-3:2019"},"content":{"rendered":"

IEC 62209-3: 2019 specifies measurement protocols and test procedures for the reproducible measurement of peak spatial-average specific absorption rate (psSAR) induced inside a simplified model of a human head or body by radio-frequency (RF) transmitting devices, with a specified measurement uncertainty. Requirements are provided for psSAR assessment using vector measurement-based systems. Such systems determine the psSAR by three-dimensional (3D) field reconstruction within the volume of interest in accordance with the requirements herein for the measurement system, calibration, uncertainty assessment and validation methods. The protocols and procedures apply for the psSAR assessments covering a significant majority of people including children during use of wireless communication devices operated in close proximity to the head or body. This document is applicable to wireless communication devices intended to be used at a position near the human head or body at distances up to and including 200 mm. This document may be employed to evaluate SAR compliance of different types of wireless communication devices used next to the ear, in front of the face, mounted on the body, combined with other RF-transmitting or non-transmitting devices or accessories (e.g. belt-clip), or embedded in garments. The overall applicable frequency range is from 600 MHz to 6 GHz. The system validation procedures provided within this document cover frequencies from 600 MHz to 6 GHz. With a vector measurement-based system this document can be employed to evaluate SAR compliance of different types of wireless communication devices. The wireless communication device categories covered include but are not limited to mobile telephones, cordless microphones, auxiliary broadcast devices and radio transmitters in personal computers, desktop and laptop devices, multi-band, multi-antenna, and push-to-talk devices. Key Words: Human Exposure, Hand-Held and Body Mounted Wireless Communication Devices.<\/p>\n

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2<\/td>\nundefined <\/td>\n<\/tr>\n
5<\/td>\nAnnex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n
7<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
14<\/td>\nFOREWORD <\/td>\n<\/tr>\n
16<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
17<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
18<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
19<\/td>\n4 Symbols and abbreviated terms
5 Overview of the measurement procedure <\/td>\n<\/tr>\n
20<\/td>\nFigures
Figure 1 \u2013 Evaluation plan checklist <\/td>\n<\/tr>\n
21<\/td>\nTables
Table 1 \u2013 Evaluation plan checklist <\/td>\n<\/tr>\n
22<\/td>\n6 Measurement system specifications
6.1 General requirements <\/td>\n<\/tr>\n
24<\/td>\n6.2 Phantom specifications
6.2.1 Head phantom specifications \u2013 shell
6.2.2 Body phantom specifications \u2013 shell
6.2.3 Tissue-equivalent medium properties
6.3 Measurement system requirements
6.3.1 General
6.3.2 Scanning measurement system specifications <\/td>\n<\/tr>\n
25<\/td>\n6.3.3 Array measurement system specifications <\/td>\n<\/tr>\n
26<\/td>\n6.4 Device holder specification <\/td>\n<\/tr>\n
27<\/td>\n6.5 Reconstruction algorithm and peak spatial-averaging specifications
7 Protocol for SAR assessments
7.1 Measurement preparation
7.1.1 General
7.1.2 Preparation of tissue-equivalent medium
Figure 2 \u2013 Illustration of the shape and orientation relative to a curved phantomsurface of the distorted cubic volume for computing psSAR <\/td>\n<\/tr>\n
28<\/td>\n7.1.4 Preparation of the device under test (DUT)
7.1.5 Operating modes
7.1.6 Position of the DUT in relation to the phantom
7.1.7 Positions of the DUT in relation to the flat phantom for large DUT <\/td>\n<\/tr>\n
29<\/td>\n7.1.8 Test frequencies for DUT
7.2 Tests to be performed
Figure 3 \u2013 Measurements performed by shifting a large device over the efficientmeasurement area of the system including overlapping areas \u2013in this case: six tests performed <\/td>\n<\/tr>\n
30<\/td>\n7.3 General measurement procedure
7.3.1 General
7.3.2 Measurement procedure for scanning systems <\/td>\n<\/tr>\n
31<\/td>\n7.3.3 Measurement procedure for array systems
7.4 SAR measurements for simultaneous transmission
7.4.1 General <\/td>\n<\/tr>\n
32<\/td>\n7.4.2 SAR measurements for uncorrelated signals
Figure 4 \u2013 Flow chart for SAR measurements of uncorrelated signals at different frequencies using a measurement system able to distinguish between different frequency components (Method 2) <\/td>\n<\/tr>\n
33<\/td>\nFigure 5 \u2013 Illustration of the amplitude spectrum, as function of frequency, for simultaneously transmitted signals of multiple frequency bands emitted by a DUT <\/td>\n<\/tr>\n
34<\/td>\nFigure 6 \u2013 Illustration of a completely covered signal bandwidth Bs by the measurement system analysis bandwidth Ba at single transmission mode
Figure 7 \u2013 Illustration of a completely covered signal bandwidthsBsi (for i = 2 to N) by the measurement system analysis bandwidth Bafor simultaneous multiple-frequency transmission mode
Figure 8 \u2013 Illustration of a non-coverage of the signal bandwidthsBsi (for i = 2 to N) by the measurement system analysis bandwidth Bafor simultaneous multiple-frequency transmission mode <\/td>\n<\/tr>\n
35<\/td>\nFigure 9 \u2013 Illustration of a partial-coverage of the signal bandwidthsBsi (for i = 2 to N) by the measurement system analysis bandwidth Bafor simultaneous multiple-frequency transmission mode
Figure 10 \u2013 Illustration of reduction of the measurement system analysisbandwidth Ba to cover only one signal bandwidth Bsi (for i = 1 to N)for simultaneous multiple-frequency transmission mode
Figure 11 \u2013 Illustration of increasing or moving the measurement systemanalysis bandwidth Ba to cover one or more signal bandwidth Bsi (for i = 1 to N)for simultaneous multiple-frequency transmission mode <\/td>\n<\/tr>\n
36<\/td>\n7.4.3 SAR measurements for correlated signals <\/td>\n<\/tr>\n
37<\/td>\n8 Measurement uncertainty estimation
8.1 General
8.2 Requirements on the measurement uncertainty evaluation <\/td>\n<\/tr>\n
38<\/td>\n8.3 Description of measurement uncertainty models
8.3.1 General <\/td>\n<\/tr>\n
39<\/td>\n8.3.2 Uncertainty models for array measurement system and scanning measurement systems <\/td>\n<\/tr>\n
40<\/td>\n8.3.3 Example uncertainty budget templates <\/td>\n<\/tr>\n
41<\/td>\nTable 2 \u2013 Uncertainty budget template for the evaluation of the measurement system uncertainty of the 1 g or 10 g psSAR to be carried out by the system manufacturer <\/td>\n<\/tr>\n
42<\/td>\nTable 3 \u2013 Uncertainty budget template for evaluating the uncertaintyin the measured value of 1 g SAR or 10 g SAR from a DUT <\/td>\n<\/tr>\n
43<\/td>\nTable 4 \u2013 Uncertainty budget template for evaluating the uncertaintyin the measured value of 1 g SAR or 10 g SAR from a validation antenna <\/td>\n<\/tr>\n
44<\/td>\n9 Measurement report
Table 5 \u2013 Uncertainty budget template for evaluating the uncertainty inthe measured value of 1 g SAR or 10 g SAR from the system check <\/td>\n<\/tr>\n
45<\/td>\nAnnex 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 <\/td>\n<\/tr>\n
46<\/td>\nA.2 Flat phantom specifications
Figure A.1 \u2013 Sagittally-bisected phantom with extended perimeter,used for scanning measurement systems <\/td>\n<\/tr>\n
47<\/td>\nA.3 Specific phantoms
Figure A.2 \u2013 Dimensions of the elliptical phantom <\/td>\n<\/tr>\n
48<\/td>\nA.4 Tissue-equivalent medium
Table A.1 \u2013 Dielectric properties of the tissue-equivalent medium <\/td>\n<\/tr>\n
49<\/td>\nAnnex B (normative)Calibration and characterization of dosimetric probes
B.1 General
B.2 Types of calibration
B.2.1 Amplitude calibration with analytical fields <\/td>\n<\/tr>\n
50<\/td>\nB.2.2 Amplitude and phase calibration by transfer calibration
Table B.1 \u2013 Uncertainty analysis for single-probe calibration in waveguide <\/td>\n<\/tr>\n
51<\/td>\nTable B.2 \u2013 Uncertainty analysis for transfer calibration of array systems <\/td>\n<\/tr>\n
52<\/td>\nB.2.3 Amplitude and phase calibration using numerical reference <\/td>\n<\/tr>\n
53<\/td>\nTable B.3 \u2013 Uncertainty analysis of transfer calibration of array systems <\/td>\n<\/tr>\n
54<\/td>\nAnnex C (informative)Field reconstruction techniques
C.1 General
C.2 Objective of field reconstruction techniques
C.3 Background <\/td>\n<\/tr>\n
55<\/td>\nFigure C.1 \u2013 Coordinate system for 2D planar measurement-system
Figure C.2 \u2013 Generic configuration of SAR measurement system <\/td>\n<\/tr>\n
56<\/td>\nC.4 Reconstruction techniques
C.4.1 Expansion techniques <\/td>\n<\/tr>\n
57<\/td>\nC.4.2 Source reconstruction techniques
C.4.3 Source base function decomposition
C.4.4 Phase reconstruction
Figure C.3 \u2013 Schematic representation of 2D planar measurement-based SARsystem and its coordinate system <\/td>\n<\/tr>\n
58<\/td>\nC.5 Source reconstruction and SAR estimation from fields measured outside the phantom
C.6 Additional considerations for field reconstruction in scanning systems
Figure C.4 \u2013 Source reconstruction from fields outside a phantom <\/td>\n<\/tr>\n
59<\/td>\nAnnex D (normative)SAR measurement system verification and system validation
D.1 Objectives and purpose
D.1.1 General
D.1.2 Objectives and purpose of system check
D.1.3 Objectives of system validation <\/td>\n<\/tr>\n
60<\/td>\nD.2 SAR measurement setup and procedure for system check and system validation
D.2.1 General
D.2.2 Power measurement setups <\/td>\n<\/tr>\n
61<\/td>\nFigure D.1 \u2013 Recommended power measurement setupfor system check and system validation <\/td>\n<\/tr>\n
62<\/td>\nD.2.3 Procedure to measure and normalize SAR
Figure D.2 \u2013 Equipment setup for measurement of forwardpower Pf and forward coupled power Pfc <\/td>\n<\/tr>\n
63<\/td>\nFigure D.3 \u2013 Equipment setup for measuring the shorted reverse coupled power Prcs
Figure D.4 \u2013 Equipment setup for measuring the powerwith the reference antenna connected <\/td>\n<\/tr>\n
64<\/td>\nD.2.4 Power measurement uncertainty <\/td>\n<\/tr>\n
65<\/td>\nFigure D.5 \u2013 Port numbering for the S-parameter measurementsof the directional coupler
Table D.1 \u2013 Example of power measurement uncertainty in % <\/td>\n<\/tr>\n
66<\/td>\nD.3 System check
D.3.1 System check antennas and test conditions
D.3.2 System check antennas and test conditions for scanning systems
D.3.3 System check antennas and test conditions for array systems <\/td>\n<\/tr>\n
67<\/td>\nD.3.4 System check acceptance criteria
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 <\/td>\n<\/tr>\n
69<\/td>\nD.4.4 Test positions for system validation
Table D.2 \u2013 Modulations and multiplexing modes used by radio systems <\/td>\n<\/tr>\n
70<\/td>\nFigure D.6 \u2013 SAM masks for positioning dipole antennas and VPIFAs on the head phantoms, including holes where the antenna spacer is inserted <\/td>\n<\/tr>\n
71<\/td>\nFigure D.7 \u2013 Flat masks for positioning VPIFAs on the flat phantoms, including a hole in the centre where the VPIFA spacer is inserted <\/td>\n<\/tr>\n
72<\/td>\nFigure D.8 \u2013 Dipole showing the distance of s = 15 mm
Figure D.9 \u2013 2-PEAK CPIFA showing the fixed distance of s = 7 mm <\/td>\n<\/tr>\n
73<\/td>\nFigure D.10 \u2013 VPIFA positioned showing the fixed distance of s = 2 mm <\/td>\n<\/tr>\n
74<\/td>\nFigure D.11 \u2013 System check and validation locations for the flat phantom <\/td>\n<\/tr>\n
75<\/td>\nFigure D.12 \u2013 System check and validation locations for the head phantom <\/td>\n<\/tr>\n
76<\/td>\nD.4.5 System validation procedure based on peak spatial-average SAR
Figure D.13 \u2013 Definition of rotation angles for dipoles <\/td>\n<\/tr>\n
77<\/td>\nTable D.3 \u2013 Peak spatial-average SAR (psSAR) averaged over 1 g and 10 g values for the flat phantom filled with tissue-equivalent medium for the antennas specified in Annex F <\/td>\n<\/tr>\n
78<\/td>\nTable D.4 \u2013 Peak spatial-average SAR (psSAR) averaged over 1 g and 10 g values for antenna generating two peaks on the flat phantom filled with tissue-equivalent medium for the antennas specified in Annex F <\/td>\n<\/tr>\n
79<\/td>\nTable D.5 \u2013 Peak spatial-average SAR (psSAR) averaged over 1 g and 10 g values on the head leftand right phantom for the antennas specified in Annex F <\/td>\n<\/tr>\n
84<\/td>\nD.4.6 On-site system validation after installation
Table D.6 \u2013 Peak spatial-average SAR (psSAR) averaged over 1 g and 10 g values for antenna generating two peaks on the head left and right phantom for the antennas specified in Annex F. Modulations are as specified in Table D.2
Table D.7 \u2013 Set of randomised tests for on-site system validation using flat phantom 1 g and 10 g psSAR, normalized to 1 W forward power, using the antennas specified in Annex F <\/td>\n<\/tr>\n
85<\/td>\nD.4.7 System validation acceptance criteria
Table D.8 \u2013 Set of tests for on-site system validation using left and right head phantoms for 1 g and 10 g psSAR for the antennas specified in Annex F <\/td>\n<\/tr>\n
87<\/td>\nAnnex E (informative)Interlaboratory comparisons
E.1 Purpose
E.2 Monitor laboratory
E.3 Phantom set-up
E.4 Reference devices <\/td>\n<\/tr>\n
88<\/td>\nE.5 Power set-up
E.6 Interlaboratory comparison \u2013 Procedure <\/td>\n<\/tr>\n
89<\/td>\nAnnex F (normative)System validation antennas
F.1 General requirements
F.2 Return loss requirements <\/td>\n<\/tr>\n
90<\/td>\nF.3 Standard dipole antenna
Table F.1 \u2013 Return loss values for antennas specified in Annex Fand flat phantom filled with tissue-equivalent medium <\/td>\n<\/tr>\n
91<\/td>\nTable F.2 \u2013 Mechanical dimensions of the reference dipoles <\/td>\n<\/tr>\n
92<\/td>\nFigure F.1 \u2013 Mechanical details of the standard dipole <\/td>\n<\/tr>\n
93<\/td>\nF.4 VPIFA <\/td>\n<\/tr>\n
94<\/td>\nFigure F.2 \u2013 VPIFA validation antenna <\/td>\n<\/tr>\n
95<\/td>\nF.5 2-PEAK CPIFA
Table F.3 \u2013 Dimensions for VPIFA antennas at different frequencies
Table F.4 \u2013 Dielectric properties of the dielectric layers for VPIFA antennas <\/td>\n<\/tr>\n
97<\/td>\nFigure F.3 \u2013 2-PEAK CPIFA at 2 450 MHz <\/td>\n<\/tr>\n
98<\/td>\nFigure F.4 \u2013 Detail of the tuning structure and matching structure
Table F.5 \u2013 Thickness of substrates and planar metallization
Table F.6 \u2013 Dielectric properties of FR4 <\/td>\n<\/tr>\n
99<\/td>\nF.6 Additional antennas
Table F.7 \u2013 Values for the antenna dimensions in Figures F.4 and F.5 <\/td>\n<\/tr>\n
100<\/td>\nAnnex G (normative)SAR calibration of reference antennas
G.1 Purpose
Figure G.1 \u2013 Measurement setup for waveguide calibration of dosimetric probe,and similar setup (same tissue-equivalent liquid, dielectric spacer,power sensors and coupler) for antenna calibration <\/td>\n<\/tr>\n
101<\/td>\nG.2 Parameters or quantities and ranges to be determined by calibration method
G.3 Reference antenna calibration setup
Figure G.2 \u2013 Setup for calibration of a reference antenna <\/td>\n<\/tr>\n
102<\/td>\nG.4 Reference antenna calibration procedure
G.4.1 Verification of return loss
G.4.2 Calibration of reference antennas: step-by-step procedure <\/td>\n<\/tr>\n
103<\/td>\nG.4.3 Uncertainty budget of reference antenna calibration <\/td>\n<\/tr>\n
104<\/td>\nTable G.1 \u2013 Example uncertainty budget for reference dipole antennacalibration for 1 g and 10 g averaged SAR (750 MHz to 3 GHz) <\/td>\n<\/tr>\n
105<\/td>\nTable G.2 \u2013 Example uncertainty budget for reference antenna calibration (PIFA)for 1 g and 10 g averaged SAR (750 MHz to 3 GHz) <\/td>\n<\/tr>\n
106<\/td>\nTable G.3 \u2013 Example uncertainty budget for reference antenna (dipole) calibrationfor 1 g and 10 g averaged SAR (3 GHz to 6 GHz) <\/td>\n<\/tr>\n
107<\/td>\nG.5 Method and uncertainties for the transfer of calibration between two of more antennas of the same type using the array system <\/td>\n<\/tr>\n
108<\/td>\nFigure G.3 \u2013 Method for the transfer of calibration between two antennasof the same type using the array system <\/td>\n<\/tr>\n
109<\/td>\nTable G.4 \u2013 Example uncertainty budget for the calibration ofan antenna using the transfer method, as percentages <\/td>\n<\/tr>\n
110<\/td>\nAnnex H (informative)General considerations on uncertainty estimation
H.1 Concept of uncertainty estimation <\/td>\n<\/tr>\n
111<\/td>\nH.2 Type A and Type B evaluations
H.3 Degrees of freedom and coverage factor <\/td>\n<\/tr>\n
112<\/td>\nH.4 Combined and expanded uncertainties <\/td>\n<\/tr>\n
113<\/td>\nH.5 Analytical reference functions <\/td>\n<\/tr>\n
114<\/td>\nTable H.1 \u2013 Parameters of analytical reference functionsand associated reference peak 10 g SAR value <\/td>\n<\/tr>\n
116<\/td>\nAnnex I (normative)Evaluation of measurement uncertainty of SAR results from scanning vector measurement-based systems with single probes
I.1 Measurement uncertainties to be evaluated by the system manufacturer MM
I.1.1 General
I.1.2 Calibration CF
I.1.3 Isotropy ISO <\/td>\n<\/tr>\n
117<\/td>\nI.1.4 System linearity LIN
I.1.5 Sensitivity limit SL
I.1.6 Boundary effect BE <\/td>\n<\/tr>\n
118<\/td>\nI.1.7 Readout electronics RE
I.1.8 Response time RT
I.1.9 Probe positioning PP
I.1.10 Sampling error SE <\/td>\n<\/tr>\n
119<\/td>\nI.1.11 Phantom shell PS
I.1.12 Tissue-equivalent medium parameters MAT <\/td>\n<\/tr>\n
121<\/td>\nI.1.13 Measurement system immunity\/secondary reception MSI
I.2 Uncertainty of reconstruction corrections and post-processing to be specified by the manufacturer MN
I.2.1 General
I.2.2 Evaluation of uncertainty due to reconstruction REC <\/td>\n<\/tr>\n
122<\/td>\nI.2.3 Impact of noise on reconstruction POL
I.2.4 SAR averaging SAV
I.2.5 SAR scaling SARS <\/td>\n<\/tr>\n
123<\/td>\nI.2.6 SAR correction for deviations in permittivity and conductivity SC <\/td>\n<\/tr>\n
124<\/td>\nI.3 Uncertainties that are dependent on the DUT MD
I.3.1 General
I.3.2 Probe coupling with the DUT PC
I.3.3 Modulation Response MOD <\/td>\n<\/tr>\n
125<\/td>\nI.3.4 Integration time IT
I.3.5 Measured SAR drift SD
I.4 Uncertainties related to the measurement environment ME
I.4.1 General
I.4.2 Device holder DH <\/td>\n<\/tr>\n
126<\/td>\nI.4.3 Device positioning DP
I.4.4 RF ambient conditions AC
I.4.5 Measurement system drift and noise DN <\/td>\n<\/tr>\n
127<\/td>\nI.5 Uncertainties of validation antennas MV
I.5.1 General
I.5.2 Deviation of experimental antennas DEX
I.5.3 Power measurement uncertainty PMU
I.5.4 Other uncertainty contributions when using validation antennas OVS
Figure I.1 \u2013 Illustration of SAR measurement results during 8 hand the centred moving average <\/td>\n<\/tr>\n
128<\/td>\nAnnex J (normative)Evaluation of the measurement system uncertainty of fixed arrayor scanning array vector measurement-based systems
J.1 Measuring system uncertainties to be evaluated by the manufacturer MM
J.1.1 General
J.1.2 Calibration CF
J.1.3 Isotropy ISO <\/td>\n<\/tr>\n
129<\/td>\nJ.1.4 Mutual sensor coupling MSC <\/td>\n<\/tr>\n
130<\/td>\nJ.1.5 Scattering due to the presence of the array AS <\/td>\n<\/tr>\n
131<\/td>\nJ.1.6 System linearity LIN
J.1.7 Sensitivity limit SL
J.1.8 Boundary effect BE <\/td>\n<\/tr>\n
132<\/td>\nJ.1.9 Readout electronics RE
J.1.10 Response time RT
J.1.11 Probe position PP <\/td>\n<\/tr>\n
133<\/td>\nJ.1.12 Sampling error SE
J.1.13 Array boundaries AB <\/td>\n<\/tr>\n
134<\/td>\nJ.1.14 Phantom shell PS
J.1.15 Tissue-equivalent medium parameters MAT <\/td>\n<\/tr>\n
136<\/td>\nJ.1.16 Phantom homogeneity HOM <\/td>\n<\/tr>\n
137<\/td>\nJ.1.17 Measurement system immunity\/secondary reception MSI
J.2 Uncertainty of reconstruction, corrections, and post-processing to be specified by the manufacturer MN
J.2.1 General
J.2.2 Evaluation of uncertainty due to reconstruction REC
J.2.3 Impact of noise on reconstruction POL
J.2.4 SAR averaging SAV
J.2.5 SAR scaling SARS
J.2.6 SAR correction for deviations in permittivity and conductivity SC
J.3 Measurement system uncertainties that are dependent on the DUT MD
J.3.1 General
J.3.2 Probe or probe-array coupling with the DUT PC <\/td>\n<\/tr>\n
138<\/td>\nJ.3.3 Modulation response MOD
J.3.4 Integration time IT
J.3.5 Measurement system drift and noise DN
J.4 Uncertainties related to the source or noise ME
J.4.1 General
J.4.2 Device holder DH
J.4.3 Device positioning DP <\/td>\n<\/tr>\n
139<\/td>\nJ.4.4 RF ambient conditions AC
J.4.5 Measurement system drift and noise DN
J.5 Uncertainties of validation antennas MV
J.5.1 General
J.5.2 Deviation of experimental antennas DEX
J.5.3 Power measurement uncertainty PMU
J.5.4 Other uncertainty contributions when using validation antennas OVS <\/td>\n<\/tr>\n
140<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

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 – Vector measurement-based systems (Frequency range of 600 MHz to 6 GHz)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2019<\/td>\n144<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":239617,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[610,2641],"product_tag":[],"class_list":{"0":"post-239613","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-33-060-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/239613","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/239617"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=239613"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=239613"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=239613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}