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RC卫兵,傅贞,王玉娟,顾元朝,马冰(四川绵阳中国工程物理研究院流体物理研究所,绵阳621900):RC,RC,PSpice,RCRC,20lg(RCXAU):RCRC,RC\411(1/X),3%;,,,,;,:;;;RC;;:TM83514:A:1003-6520(2008)01-0053-04:(10635050)ProjectSupportedbyNationalNaturalScienceFoundationofChina(10635050).FrequencyResponseAnalysisofPassiveRCIntegratorWEIBing,FUZhen,WANGYu-juan,GUYuan-chao,MABing(InstituteofFluidPhysics,ChinaAcademyofEngineeringPhysics,Mianyang621900,China)Abstract:InordertoanalyzefrequencyresponseofpassiveRCintegrator,theequivalentcircuitincludingthetinyparametersofintegratorwascalculatedwiththeOrCAD/Pspice.Theresultsshowthatthelowerlimitoffrequencyresponseisdeterminedbytimeconstant(=RC).WhenRCis4.1timesmorethan1/X,theerrorofamplitude-fre-quencyresponseislessthan3%.Thehigherlimitisdeterminedbydispersedparameters.ThemostinfluencecomefromtinyinductancefromCandthedispersedcapacitancefromRofRCintegrator.Itistheproperwaytoimprovecharacteristicofintegratorthatthecapacitanceismadeupofsomeparallelelements,andtheresistanceismadeupofsomeelementinseries.Thecoaxialstructureisdesignedforintegratorthatisconnectedtosignalcableofwhichimpedanceis508.ThedifferencebetweenRCintegratorandRClow-passcircuitwasdescribedinanalysisoffre-quencyresponse.When20lg(RCXAU)isusedforverticalordinateofBodeplot,thediagonallineinBodeplotwhichuses20lgAUasverticalordinatechangesforlevel.Itaccordswithcustomofanalysisandeasytoascertainband-widthofRCintegrator.BecauseRCintegratorisapartofmonitor,thebandwidthisnotdeterminedby-3dBbutbypermissibletoleratederrorofintegrator.Keywords:pulsepower;measurement;passive;RC-integrator;amplitude-frequencyresponse;dispersedparameter0,()()[1,2]D-dot[3-5]B-dot[5,6]RC,[5],RC10ns~1Ls,RC100ns~10Ls,,[7],,,,,,:;[8-11],,[12]Rogowski,,,#53#34120081HighVoltageEngineeringVol.34No.1Jan.2008,1RCD-dot(#1),1,U1(100ns,5ns),U2#1:,(2),R,LR,CR1,CR2;C,RC,LC;Rm,Lm;RL[13,14],PSpice[15],:LRCR2RC2,(,);LCCR1,LC,,3Uc1:1),,,LC;2),CR1,LRCR2,(#2)41k8,4220pF;315Ls#21U3,3Uc2#1#211Tab.1ParametersofRCintegratorequivalentcircuitR/k8LR/nHCR1/pFCR2/pFC/nFRC/8LC/nHRm/8Lm/nHRL/M8#14.3500.02210.22550201#242000.0120.880.05350201:(),,1Fig.1Experimentaloutputofsquare-waveresponseofRCintegrator2Fig.2EquivalentcircuitofRCintegrator3Fig.3Calculatedoutputofsquare-waveresponseofRCintegrator(508),RLm1/XCCRLRL:¹;ºC,,,C,1/XC,XLCLC3,4,C1RC1LC1C2RC2LC2C3RC3LC33,2PSpice:LC1LC2LC3,;,1#54#Jan.2008HighVoltageEngineeringVol.34No.14RCFig.4EquivalentcircuitofRCintegratorwithparallelcapacitance5RCFig.5Square-waveresponseofRCintegratorwithparallelcapacitance6Fig.6Structureofcoaxialintegrator(1k8,3417nF)(5),5Uexp,Uc::,,6/0B-dot;47nF,(7)2RCRC/RC0,8,AU=|Uout/Uin|,Uout7B-dotFig.7OutputsofB-dotmonitorwithcoaxialintegrator8RCFig.8Amplitude-frequencyresponseofRClow-passcircuit9RCFig.9Amplitude-frequencyresponseofRClow-passcircuitofidealizedRCintegrator,Uin,fH=1/2PRC,fH0()()[16]RCm1/X,,fH,80RCUin=UmsinXt,Um,C,:Uout=QUindt=Um(-cosXt+C)/X(1),RCUoutX,8,XAU,,,20lg(RCXAU)(9),dB;#55#20081341RC9RC,RCfL,PSpice(2)10,#11,#22:,RCXAUm1,/0,/0/0(1)20lgAU[-3dB[16],#101037~23MHz,-3dBAU=01707,,,,?10%,3%,,RCXAU3%(-01265dB)8:#10115~612MHz,#20118~1713MHz:3%,RCm1/XRC\411(1/X)3PSpiceRC,:RCRC,RC\411(1/X),3%;,,,,;,RC,20lg(RCXAU),,,RC-3dB,10RCFig.10Amplitude-frequencyresponseofpracticalRCintegrator[1],,,.10MeVLIA[J].,1996,8(2):187-188.DAIGuang-sen,LIUCheng-jun,DINGBa-inan,etal.Voltagepulseandelectronbeamcurrentmeasurmentonthe10MeVLIA[J].HighPowerLaserandParticleBeams,1996,8(2):187-188.[2]EdsonWA,OetzelGN.Capacitancevoltagedividerforhigh-voltagepulsemeasurement[J].RevSciInstrum,1981,52(4):604-606.[3]StruveKW.Design,calibrationandperformanceofwaterdiag-nosticsonthePBFAZ[C].11thIEEEInternationalPulsedPowerConference.Baltimore,Maryland,USA,1997:1304-1306.[4]EkdahlCA.Voltageandcurrentsensorsforahigh-desityZ-pinchexperiment[J].RevSciInstrum,1980,51(12):1645-1648.[5]StygarWA,SpielmanRB,IvesHC,etal.D-dotandB-dotmonitorsforZ-vacuum-sectionpower-flowmeasurement[C].11thIEEEInternationalPulsedPowerConference.Baltimore,Maryland,USA,1997:1258-1263.[6]EvansBJ,SmithLM.Cross-correlation-basedmethodforde-terminingthepositionandvelocityofarailgunplasmaarmaturefromB-dotprobesignals[J].PlasmaScience,1991,19(5):926-934.[7],,,.Rogowski[J].,2004,30(9):13-16.ZHANGMing-ming,ZHANGYan,LIHong-bin,etal.Tech-nologyofdesigningintegatorofRogowskicurrenttransducer[J].HighVoltageEngineering,2004,30(9):13-16.[8].[M].:,1989:128-132.[9],,,.[M]M..:,1995:420-429.[10],,.[J].,2000,22():10-13.LIUJin-liang,HUAIWu-long,ZHONGHu-ihuang.Effectofhighvoltagepulse.sfrequencytoperformanceofcapacitived-ivider[J].JournalofNationalUniversityofDefenseTechnolo-gy,2000,22(S):10-13.(77)#56#Jan.2008HighVoltageEngineeringVol.34No.1360V,106ns,23ns,113%~99%c)BaTiO3PSS130V,35ns,6ns,0146%~99%[1]GortlerA,ChristiansenJ,DotzerR.Investigationofpulsedsurfaceflashoverforthetriggeringofpseudosparkhigh-powerswitches[J].IEEETransonPlasmaScience,1989,17(5):762-765.[2]FrankK,DewaldE,BickesC,etal.Scientificandtechnologicalprogressofpseudosparkdevices[J].IEEETransonPlasmaSc-ience,1999,27(4):1008-1020.[3]TkotzR,GortlerA,ChristiansenJ