ITU R BS 1698:2005
ITU R BS 1698:2005 Evaluating Fields From Terrestrial Broadcasting Transmitting Systems Operating In Any Frequency Band For Assessing Exposure To Non-ionizing Radiation
Table of Contents
Annex1-Evaluatingfieldsfromterrestrialbroadcastingtransmittingsystemsoperatinginanyfrequency
bandforassessingexposuretonon-ionizing
radiation
1Introduction
2Characteristicsofelectromagneticfields
2.1Generalfieldcharacteristics
2.1.1Fieldcomponents
2.1.2Farfield
2.1.3Nearfield
2.1.4Polarization
2.1.5Modulation
2.1.6Interferencepatterns
2.2Field-strengthlevelsnearbroadcastingantennas
2.2.1LF/MFbands(150-1605kHz)
2.2.2HFbands(3-30MHz)
2.2.3VHF/UHFbands(30MHz-3GHz)
2.2.4SHF(3-30GHz)
2.3Mixedfrequencyfield
2.4EMFinsidebuildings
3Calculation
3.1Procedures
3.1.1Closedsolutions
3.1.2Numericalprocedures
4Measurements
4.1Procedures
4.1.1LF/MFbands
4.1.2HFbands
4.1.3VHF/UHFbands
4.1.4SHFbands
4.2Instruments
4.2.1Introduction
4.2.2Characteristicsofthemeasurementinstruments
forelectricandmagneticfield
4.2.3Narrow-bandinstrumenttypesandspecifications
4.3Comparisonbetweenpredictionsandmeasurements
5Precautionsattransmittingstationsandintheirvicinity
5.1PrecautionstocontrolthedirecthealtheffectsofRF
radiation
5.1.1Employee(occupational)precautionarymeasures
5.1.2Precautionarymeasuresinrelationtothegeneral
public
5.2PrecautionstocontrolindirectRFradiationhazards
Appendix1toAnnex1-Examplesofcalculatedfieldstrengths
nearbroadcastingantennas
1ExampleA-Electricandmagneticfield-strengthplots
2ExampleB-Determinationofthemagneticfieldstrength
inthenearfieldzoneofhigh-powerMF/LF
antennas
3ExampleC-NearelectromagneticfieldofHFtransmitting
curtainantennas
3.1Introduction
3.2Numericalanalysisofwirestructures
3.3Nearelectricandmagneticfieldsofcurtainantennas
4Conclusions
Appendix2toAnnex1-Comparisonbetweenpredictionsand
measurements
1Foreword
1.1Modelusedforantennasystem
1.2Advantagesandlimitationsoftheimplementedmodel
ofantennasystem
2Comparisonbetweenpredictionandmeasurements
2.113MHz
2.1.1Predictions
2.1.2Measurements
2.218MHz
2.2.1Predictions
2.2.2Measurements
2.3Comparisonbetweenmeasurementsandpredictionsof
thefieldstrengthinthenearzone
2.3.113MHz
2.3.218MHz
3Conclusions
Appendix3toAnnex1-Limitsandlevels
1Regulatoryandadvisoryauthoritiesonhealthaspects
2Comparisonofbasiclimitsandderivedlevelsfromwidely
usedregulations
2.1Comparisonofbasicbiologicallimits
2.2ComparisonofderivedlimitlevelsforE,Handpower
fluxlimitsatvariousfrequencies
3Field-strengthvaluestobedetermined
4NumericalproceduresandcalculationofEMFquantities
5Listofsomenationalregulations
5.1Administrations
5.1.1Australia
5.1.2Brazil
5.1.3France
5.1.4Germany
5.1.5Italy
5.1.6NewZealand
5.1.7UnitedStatesofAmerica
5.1.8VaticanCityState
5.1.9Japan
6ListofsomeRegulatoryandAdvisorybodies
6.1ElectronicComponentsCommittee
6.2GermanCommissionforElectricalandElectronic
Informationtechnologies,DKE
6.3EuropeanUnion,EU-Recommendationfromthe
CounciloftheEuropeanUnion,L199,12July1999
6.4InstituteofElectricalandElectronics
Engineer/AmericanNationalStandardsInstitute(IEEE/ANSI)
6.5InternationalCommissiononnon-ionizingradiation(ICNIRP)
6.6InternationalElectrotechnicalCommission(IEC)
6.7WorldHealthOrganization(WHO)
6.8NationalRadiologicalProtectionBoard(NRPB)
6.9EuropeanTelecommunicationsStandardsInstitute(ETSI)
Appendix4toAnnex1-Additionalevaluationmethods
1Dosimetry
2SARmeasurement
2.1Electricfieldmeasurement
2.2Temperaturemeasurement
2.3Calorimetricmeasurement
3Bodycurrentmeasurement
3.1Inducedbodycurrents
3.2Contactcurrentmeasurement
3.3Touchvoltagemeasurement
Appendix5toAnnex1-Electromedicaldevices
1Electromedicaldevices
1.1Implantedandportabledevices
Appendix6toAnnex1-References