适合对称天线的平衡输出高压纳秒级脉冲源研究

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1、第4O卷第3期电子科技大学学报V．0I．40No．32011年5月JournalofUniversityofElectronicScienceandTechnologyofChinaMav2011DesignofBalancedOutputHigh-·VoltageNanosecondPulseSourceforSymmetricalAntennaYANGDc-qiang，PANJin，ZHAOZhi-qin，andNIEZai-ping(SchoolofElectronicEngineering,UniversityofElectronicScienceandTechnologyofC

2、hinaChengdu610054)AbstractTime．domainirepulsegeneratorisaveryimportantunit．mtime—domainultra-bandradarS)rstems．Mosttime．doma．mimpulseantennasaresymmetricallydesignedwhichrequirebalancedoutputpulsegeneratorsordertorealizewidebandmatching．Ain1iI1gtosolvethecompatibleproblemofhighvoltageandbalancedo

3、utput,whichcommonlyexistsinhigh-voltagepulsegenerators，thispaperdesignsanewpulsegeneratorcircuit,thecascadeMarxcircuitwithbalancedoutput．Witl1tl1isgeneratorandaloadedbow-tieantenila’a300Vnanosecondpulsewasgenerated．Themeasuredresultvalidatestheeffectivenessoftheproposedpulsegenerator．Keywordsbala

4、ncedoutOut：Marxcircuit；nanosecondpulse；symmetricalal1tenna适合对称天线的平衡输出高压纳秒级脉冲源研究杨德强，潘锦，赵志钦，聂在平(电子科技大学电子工程学院成都610054)【摘要】时域脉冲源是时域超宽带雷达系统中的重要部件，时域脉冲天线大多采用对称形式，如果用非平衡高压脉冲源激励，难以实现很好的宽带匹配．为此设计了一种新的电路形式，采用平衡输出的Marx~路级联，解决了脉冲源高幅度和平衡输出不能兼顾的问题．利用与对称天线进行的纳秒级脉冲收发实验验证了该电路的良好性能．关键词平衡输出；Marx~路；纳秒级脉冲：对称天线中图分类号TN

5、784．1文献标识码Adoi：10．3969／j．issn．1001-0548．2011．03．007Thetime‘domainimpulsehasbeenwidelyused’multra-bandtime．domainpulse．Inordertosolvethegroundpenetratingradar(GPR)forconcealedtargetscompatibleproblemofhighvoltageandbalanceddetectionI¨．Theantennasusedfortransmissionareoutput,thispaperdesignsanewpul

6、segeneratorcircuit,usuallysymmetricallydesignedordertorealizewhichUSeSthecascadeMarxcircuitwithbalancedwidebandmatchingI2-41．Therefore，pulsegeneratoroutput．Experimentalresultshowsthatthenewpulsewithbalancedoutputisadopted．Inradarsystem，thegeneratorCallmeettherequirementsofbalanceddetectionrangeis

7、averyimportantparameter．Usuallyoutputandhighamplitudeofabipolarpulse．highamplitudeoutputofthepulsegeneratoris1DesignoftheSymmetricalMarxdemandedforlongdistancedetection．However,itisCircuitimpossibleforasingleavalanchet