1、NORME INTERNATIONALE CEI IEC INTERNATIONAL STANDARD 615803 Premiredition Firstedition 199706 Mthodesdemesureappliques auxguidesdondes Partie3: Variationdutempsdegroupe Methodsofmeasurementforwaveguides Part3: Variationofgroupdelay Numroderfrence Referencenumber CEI/IEC615803:1997Numrosdespublication
2、s LespublicationsdelaCEIsontnumrotespartirde 60000dsle1erjanvier1997. Publicationsconsolides Lesversionsconsolidesdecertainespublicationsde laCEIincorporantamendementssontdisponibles.Par exemple,lesnumrosddition1.0,1.1et1.2 indiquentrespectivementlapublicationdebase,la publicationdebaseincorporantla
3、mendement1,etla publicationdebaseincorporantlesamendements1 et2. Validitdelaprsentepublication LecontenutechniquedespublicationsdelaCEIest constammentrevuparlaCEIafinquilreflteltat actueldelatechnique. Desrenseignementsrelatifsladatede reconfirmationdelapublicationsontdisponiblesdans leCataloguedela
4、CEI. Lesrenseignementsrelatifscesrvisions,ltablis sementdesditionsrvisesetauxamendements peuventtreobtenusauprsdesComitsnationauxde laCEIetdanslesdocumentscidessous: BulletindelaCEI AnnuairedelaCEI Accsenligne* CataloguedespublicationsdelaCEI Publiannuellementetmisjourrgulirement (Accsenligne)* Term
5、inologie,symbolesgraphiques etlittraux Encequiconcernelaterminologiegnrale,lelecteur sereporteralaCEI60050: VocabulaireElectro techniqueInternational (VEI). Pourlessymbolesgraphiques,lessymboleslittraux etlessignesdusagegnralapprouvsparlaCEI,le lecteurconsulteralaCEI60027: Symboleslittraux utilisere
6、nlectrotechnique,laCEI60417:Symboles graphiquesutilisablessurlematriel.Index,relevet compilationdesfeuillesindividuelles, etlaCEI60617: Symbolesgraphiquespourschmas. PublicationsdelaCEItabliespar lemmecomitdtudes Lattentiondulecteurestattiresurleslistesfigurant lafindecettepublication,quinumrentles
7、publicationsdelaCEIprparesparlecomit dtudesquiatablilaprsentepublication. * Voiradressesitewebsurlapagedetitre. Numbering Asfromthe1stJanuary1997allIECpublicationsare issuedwithadesignationinthe60000series. Consolidatedpublications ConsolidatedversionsofsomeIECpublications includingamendmentsareavai
8、lable.Forexample, editionnumbers1.0,1.1and1.2refer,respectively,to thebasepublication,thebasepublication incorporatingamendment1andthebasepublication incorporatingamendments1and2. Validityofthispublication ThetechnicalcontentofIECpublicationsiskeptunder constantreviewbytheIEC,thusensuringthatthe con
9、tentreflectscurrenttechnology. Informationrelatingtothedateofthereconfirmationof thepublicationisavailableintheIECcatalogue. Informationontherevisionwork,theissueofrevised editionsandamendmentsmaybeobtainedfromIEC NationalCommitteesandfromthefollowingIEC sources: IECBulletin IECYearbook Onlineaccess
10、 CatalogueofIECpublications Publishedyearlywithregularupdates (Onlineaccess)* Terminology,graphicalandletter symbols Forgeneralterminology,readersarereferredtoIEC 60050: InternationalElectrotechnicalVocabulary (IEV). Forgraphicalsymbols,andlettersymbolsandsigns approvedbytheIECforgeneraluse,readers
11、are referredtopublicationsIEC60027: Lettersymbolsto beusedinelectricaltechnology ,IEC60417: Graphical symbolsforuseonequipment.Index,surveyand compilationofthesinglesheets andIEC60617: Graphicalsymbolsfordiagrams. IECpublicationspreparedbythesame technicalcommittee Theattentionofreadersisdrawntothee
12、ndpagesof thispublicationwhichlisttheIECpublicationsissued bythetechnicalcommitteewhichhaspreparedthe presentpublication. * Seewebsiteaddressontitlepage.NORME INTERNATIONALE CEI IEC INTERNATIONAL STANDARD 615803 Premiredition Firstedition 199706 Mthodesdemesureappliques auxguidesdondes Partie3: Vari
13、ationdutempsdegroupe Methodsofmeasurementforwaveguides Part3: Variationofgroupdelay CommissionElectrotechniqueInternationale InternationalElectrotechnicalCommission Pourprix,voircatalogueenvigueur Forprice,seecurrentcatalogue IEC1997Droitsdereproductionrservs Copyrightallrightsreserved Aucunepartied
14、ecettepublicationnepeuttrereproduiteni utilisesous quelqueformequecesoitetparaucun procd,lectroniqueoumcanique,ycomprislaphoto copieetlesmicrofilms,sanslaccordcritdelditeur. Nopartofthispublicationmaybereproducedorut ilizedin anyformorbyanymeans,electronicormechanical, includingphotocopyingandmicrof
15、ilm,withoutpermissionin writingfromthepublisher. InternationalElectrotechnicalCommission 3,ruedeVarembGeneva,Switzerland Telefax:+41229190300 email:inmailiec.ch IECwebsitehttp:/www.iec.ch CODEPRIX PRICECODE J2 615803CEI:1997 SOMMAIRE Pages AVANTPROPOS 4 Articles 1 Domainedapplicationetobjet 6 2 Gnra
16、lits. 6 3 Principe 6 4 Montagesdessai 8 4.1 Montagedessai1 8 4.1.1 Equipementdessai 10 4.1.2 Procdure 12 4.1.3 Expressiondesrsultats. 12 4.2 Montagedessai2 12 4.2.1 Equipementdessai 14 4.2.2 Procdure 16 4.2.3 Expressiondesrsultats. 16 5 Exigences. 16 Figures 1 Montagedessai1. 10 2 Montagedessai2. 14
17、615803IEC:1997 3 CONTENTS Page FOREWORD 5 Clause 1 Scopeandobject 7 2 General 7 3 Principle 7 4 Testsetup . . 9 4.1 Testsetup1 . . 9 4.1.1 Testequipment . 11 4.1.2 Procedure 13 4.1.3 Expressionofresults. 13 4.2 Testsetup2 . . 13 4.2.1 Testequipment . 15 4.2.2 Procedure 17 4.2.3 Expressionofresults.
18、17 5 Requirements. 17 Figures 1 Testsetup1. . 11 2 Testsetup2. . 154 615803CEI:1997 COMMISSIONLECTROTECHNIQUEINTERNATIONALE _ MTHODESDEMESUREAPPLIQUESAUXGUIDESDONDES Partie3:Variationdutempsdegroupe AVANTPROPOS 1) LaCEI(CommissionElectrotechniqueInternationale)estuneorganisationmondialedenormalisati
19、oncompose delensembledescomitslectrotechniquesnationaux(ComitsnationauxdelaCEI).LaCEIapourobjetde favoriserlacooprationinternationalepourtouteslesquestionsdenormalisationdanslesdomainesde llectricitetdellectronique.Aceteffet,laCEI,entreautresactivits,publiedesNormesinternationales. Leurlaborationest
20、confiedescomitsdtudes,auxtravauxdesquelstoutComitnationalintressparle sujettraitpeutparticiper.Lesorganisationsinternationales,gouvernementalesetnongouvernementales,en liaisonaveclaCEI,participentgalementauxtravaux.LaCEIcollaboretroitementaveclOrganisation InternationaledeNormalisation(ISO),selondes
21、conditionsfixesparaccordentrelesdeuxorganisations. 2) LesdcisionsouaccordsofficielsdelaCEIconcernantlesquestionstechniquesreprsentent,danslamesure dupossibleunaccordinternationalsurlessujetstudis,tantdonnquelesComitsnationauxintresss sontreprsentsdanschaquecomitdtudes. 3) Lesdocumentsproduitsseprsen
22、tentsouslaformederecommandationsinternationales.Ilssontpublis commenormes,rapportstechniquesouguidesetagrscommetelsparlesComitsnationaux. 4) Danslebutdencouragerlunificationinternationale,lesComitsnationauxdelaCEIsengagentappliquerde faontransparente,danstoutelamesurepossible,lesNormesinternationale
23、sdelaCEIdansleursnormes nationalesetrgionales.ToutedivergenceentrelanormedelaCEIetlanormenationaleourgionale correspondantedoittreindiqueentermesclairsdanscettedernire. 5) LaCEInafixaucuneprocdureconcernantlemarquagecommeindicationdapprobationetsaresponsabilit nestpasengagequandunmatrielestdclarconf
24、ormelunedesesnormes. 6) LattentionestattiresurlefaitquecertainsdeslmentsdelaprsenteNormeinternationalepeuventfaire lobjetdedroitsdepropritintellectuelleoudedroitsanalogues.LaCEInesauraittretenuepour responsabledenepasavoiridentifidetelsdroitsdepropritetdenepasavoirsignalleurexistence. LaNormeinterna
25、tionaleCEI615803attablieparlesouscomit46B:Guidesdondeset dispositifsaccessoires,ducomitdtudes46delaCEI:Cbles,fils,guidesdondes, connecteursetaccessoirespourcommunicationsetsignalisation. Letextedecettenormeestissudesdocumentssuivants: FDIS Rapportdevote 46B/224/FDIS 46B/227/RVD Lerapportdevoteindiqu
26、dansletableaucidessusdonnetouteinformationsurlevoteayant aboutilapprobationdecettenorme.615803IEC:1997 5 INTERNATIONALELECTROTECHNICALCOMMISSION _ METHODSOFMEASUREMENTFORWAVEGUIDES Part3:Variationofgroupdelay FOREWORD 1) TheIEC(InternationalElectrotechnicalCommission)isaworldwideorganizationforstand
27、ardizationcomprising allnationalelectrotechnicalcommittees(IECNationalCommittees).TheobjectoftheIECistopromote internationalcooperationonallquestionsconcerningstandardizationintheelectricalandelectronicfields.To thisendandinadditiontootheractivities,theIECpublishesInternationalStandards.Theirprepara
28、tionis entrustedtotechnicalcommittees;anyIECNationalCommitteeinterestedinthesubjectdealtwithmay participateinthispreparatorywork.International,governmentalandnongovernmentalorganizationsliaising withtheIECalsoparticipateinthispreparation.TheIECcollaboratescloselywiththeInternationalOrganization forS
29、tandardization(ISO)inaccordancewithconditionsdeterminedbyagreementbetweenthetwo organizations. 2) TheformaldecisionsoragreementsoftheIEContechnicalmattersexpress,asnearlyaspossible,an internationalconsensusofopinionontherelevantsubjectssinceeachtechnicalcommitteehasrepresentation fromallinterestedNa
30、tionalCommittees. 3) Thedocumentsproducedhavetheformofrecommendationsforinternationaluseandarepublishedintheform ofstandards,technicalreportsorguidesandtheyareacceptedbytheNationalCommitteesinthatsense. 4) Inordertopromoteinternationalunification,IECNationalCommitteesundertaketoapplyIECInternational
31、 Standardstransparentlytothemaximumextentpossibleintheirnationalandregionalstandards.Any divergencebetweentheIECStandardandthecorrespondingnationalorregionalstandardshallbeclearly indicatedinthelatter. 5) TheIECprovidesnomarkingproceduretoindicateitsapprovalandcannotberenderedresponsibleforany equip
32、mentdeclaredtobeinconformitywithoneofitsstandards. 6) AttentionisdrawntothepossibilitythatsomeoftheelementsofthisInternationalStandardmaybethesubject ofpatentrights.TheIECshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. InternationalStandardIEC615803hasbeenpreparedbysubcommittee46B:W
33、aveguidesand theiraccessories,ofIECtechnicalcommittee46:Cables,wires,waveguides,R.F.connectors andaccessoriesforcommunicationandsignalling. Thetextofthisstandardisbasedonthefollowingdocuments: FDIS Reportonvoting 46B/224/FDIS 46B/227/RVD Fullinformationonthevotingfortheapprovalofthisstandardcanbefou
34、ndinthereporton votingindicatedintheabovetable.6 615803CEI:1997 MTHODESDEMESUREAPPLIQUESAUXGUIDESDONDES Partie3:Variationdutempsdegroupe 1 Domainedapplicationetobjet CettepartiedelaCEI61580estapplicablelavariationdetempsdegroupedesondes propagesdanslesguidesdondesouensemblesdeguidesdondes.Lobjectifd
35、esmthodes dessaidonnescidessousestdecaractriserlavariationdutempsdegroupeduneonde propagedanslesguidesdondesouensemblesdeguidesdondes. 2Gnralits Lavariationdutempsdegroupedunguidedondesenfonctiondelafrquencedcritles variationsdeladriveoudelapentedelacaractristiquedephasedanslabandede frquence.Lavari
36、ationdetempsdegroupegalementsouventappeledistorsiondutempsde groupeestprsentedanstouslesguidesdondesayantunmodedepropagationdesondes avecunedpendancenonlinairedelafrquencesurlalongueurdonde.Deplusdes variationsdimensionnelleslelongduguidedondes,desrflexionssimplesoumultiples,des structuresdefiltres,
37、despropagationsmultimode,etc.peuventcauserdesvariations additionnellesdetempsdegroupe. Dessignauxdebandenonnulletransmisdansdesmdiasprsentantdegrandesvariations dutempsdegroupepeuventtrealtrsdetellemanirequedanslecasextrme,les informationscontenuesdanslabandenepeuventtrerestaures. 3Principe Troispri
38、ncipalesmesuressontactuellementutilises: a) ladiffrentiationnumriquestatique; b) lamesureenmodulationdamplitude(AM); c) lamesureenmodulationdefrquence(FM). Lesmthodesa)etc)demandentdesquipementsdessaionreuxet/oucompliqus,ainsi lassemblagedunmontagedessaipartirdlmentssingulierspeutnepastre recommand.
39、Cependant,desquipementsdessaiddis,procurentdesmesuresprcisesde variationsdetempsdegroupeavecunereprsentationconvenabledesdonnes. Lamthodeb)peuttremontepartirdquipementsstandardsdelaboratoiredessaisRF. Pourlesessais,unsignalRFmodulounonestenvoydansleguidedondesenessai (WUT).Alasortie,laphasedusignalR
40、F(oudusignaldmodul)estcompareaveclaphase derfrencelentreduWUT.615803IEC:1997 7 METHODSOFMEASUREMENTFORWAVEGUIDES Part3:Variationofgroupdelay 1 Scopeandobject ThispartofIEC61580isapplicabletothevariationofgroupdelayofawavepropagatedin waveguideorwaveguideassemblies.Theobjectiveofthetestproceduresgive
41、nbelowisto characterizethegroupdelayvariationofawavepropagatedinwaveguideorwaveguide assemblies. 2General Groupdelayvariationofawaveguideversusfrequency,describesthevariationsofthe derivativeortheslopeofthephasecharacteristicwithinthebandwidth.Groupdelayvariation, oftenreferredtoasgroupdelaydistorti
42、onalso,isfoundinallwaveguidewithwavepropagation modeshavinganonlineardependenceoffrequencyonwavelength.Furthermore,dimensional variationsalongwaveguide,singleormultiplereflections,filterstructures,multimode propagation,etc.cancauseadditionalgroupdelayvariations. Signalsofnonzerobandwidthtransmittedthroughmediaexhibitinglargegroupdelay variationscanbealteredinsuchawaythat,intheextremecase,theinformationcontainedin
