在线微波测碳仪用六端口电路系统的研制

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1、电子科技大学硕士学位论文在线微波测碳仪用六端口电路系统的研制姓名：唐亮申请学位级别：硕士专业：无线电物理指导教师：贾宝富20070501ABSTRACTThetechnologydevelopmentofmicrowavemeasurementiscloselylinkedwiththedevelopmentofmicrowavedevices，furthermoremicrowavemeasurementswithllighpreciseandspeedinessalwaysdependontheresearchandexploitationofprecise

2、devices．Six．portmeasurementtechnologybasedOilpowersisakindofeffectivemethodwhichisabletopreciselymeasurethereflectioncoefficientsofmicrowaveunits．AtthesametimethistechnologyCanbewidelyappliedinmanydomains，suchasmicrowavemeasurement，securitydetection,industrialdetection，andSOon．Theref

3、ore，thesix．portmeasurementtechnologyhasbeenfocusedonbymanyresearchersinmanycountriessinceitwasproposed，andhasbecomeoneofthemostimportanttoolsformicrowavemeasurement．Inordertorealizethereal．time，-continuous，precisemeasurementofthecarboncontentoftheflyashintheflueofthepowerstation，wetr

4、ansferthemeasurementofthecarboncontenttothemeasurementofthemicrowavenetworkparameters---phasedeviationandattenuationcoefficientbymicrowavesensors．Inthispaper,akindofmicrostripcircuitWasdesignedandrealizedonthebaseofthesix—portnetworktechnique，whichcansimultaneouslymeasurethephasedevi

5、ationandattenuationcoefficient．Six-portnetworkpossessesmanyadvantage，such弱simplecircuitform，calibrationthroughsoftwareandhi!曲measurementprecision．Weanalyzedthegeneralsix．portnetwork,anddiscussedthegeneralformulae，designnormandcalibration．ThedetailedanalysisofthedismatchingandQ-pomdis

6、tributionofakindofspecialsix-portnetwork,composedofperfectdirectionalcouplerandmatchedreciprocallossless价e-portWasprovided,andoptimummicrostripringparameterswerededuced．Atlast，WeprovedthatthiscircuithashighermeasIlrementprecisionthroughexperiments．Keywords：SIX·-portnetwork；multi··sta

7、tereflectometer；complexreflection；Matchedreciprocallosslessfive-portcouplerⅡ独创性声明本人声明所呈交的学位论文是本人在导师指导下进行的研究工作及取得的研究成果。据我所知，除了文中特别加以标注和致谢的地方外，论文中不包含其他人已经发表或撰写过的研究成果，也不包含为获得电子科技大学或其它教育机构的学位或证书而使用过的材料。与我一同工作的同志对本研究所做的任何贡献均已在论文中作了明确的说明并表示谢意。签名：燕杰x暑期：砂矿年f月曷旧

8、‘。。关于论文使用授权的说明本学位论文作者完全了解电子科技大

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