【英文标准名称】:StandardTestMethodforMeasuringRelativeComplexPermittivityandRelativeMagneticPermeabilityofSolidMaterialsatMicrowaveFrequencies
【原文标准名称】:微波频率下固体材料相对复介电常数和磁导率测量标准试验方法
【标准号】:ASTMD5568-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D09.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:dielectricconstant;lossfactor;magneticpermeability;measurement;microwave;millimetre-wave;permittivity;radiofrequency;rectangularwaveguide;scatteringparameter;transmission/reflection;Coaxialline;Isotropicreciprocal(non-gyromagnetic)so
【摘要】:Designcalculationsforradiofrequency(RF),microwaveandmillimetre-wavecomponentsrequiretheknowledgeofvaluesofcomplexpermittivityandpermeabilityatoperatingfrequencies.Thistestmethodisusefulforevaluatingsmallexperimentalbatchorcontinuousproductionmaterialsusedinelectromagneticapplications.Usethismethodtodeterminecomplexpermittivityonly(innon-magneticmaterials)orbothcomplexpermittivityandpermeabilitysimultaneously.1.1Thistestmethodcoversaprocedurefordeterminingrelativecomplexpermittivity(relativedielectricconstantandloss)andrelativemagneticpermeabilityofisotropic,reciprocal(non-gyromagnetic)solidmaterials.Ifthematerialisnonmagnetic,itisacceptabletousethisproceduretomeasurepermittivityonly.1.2Thismeasurementmethodisvalidoverafrequencyrangeofapproximately100MHztoover20GHz.Theselimitsarenotexactanddependonthesizeofthespecimen,thesizeofrectangularwaveguidetransmissionlineusedasaspecimenholder,andontheapplicablefrequencyrangeofthenetworkanalyzerusedtomakemeasurements.Thepracticallowerandupperfrequenciesarelimitedbyspecimendimensionrequirements(largespecimensatlowfrequenciesandsmallspecimensathighfrequencies).Beinganon-resonantmethod,theselectionofanynumberofdiscretemeasurementfrequenciesinameasurementbandwouldbesuitable.Useofmultiplerectangularwaveguidetransmissionlinesizesarerequiredtocoverthisentirefrequencyrange(100MHzto20GHz).Thistestmethodcanalsobegenerallyappliedtocircularwaveguidetestfixtures.Therectangularwaveguidefixtureispreferredovercoaxialfixtureswhensampleshavein-planeanisotropyoraredifficulttomanufactureprecisely.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.ThevaluesgiveninparenthesesareinEnglishunits.Theequationsshownhereassumeane+jx03C9;tharmonictimeconvention.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:17_220_01
【页数】:8P.;A4
【正文语种】:英语