微波開式腔高溫（變溫）介質(zhì)參數(shù)自動測量系統(tǒng).pdf

1、西北工業(yè)大學(xué)碩士學(xué)位論文微波開式腔高溫（變溫）介質(zhì)參數(shù)自動測量系統(tǒng)姓名：馮萍麗申請學(xué)位級別：碩士專業(yè)：電磁場與微波技術(shù)指導(dǎo)教師：韋高20060301西北工業(yè)大學(xué)碩士學(xué)位論文AbstractAbstractInthispaperhightemperaturedielectricopenresonatormeasurementtechniqueismainlyresearched，Basedonthetechnique，ahi曲temper

2、atureautomaticopenresonatormeasuringsystematKubandisdesignedThissystemcontrolsthescalarnetworkanalyzermeasuringwithsweepingfrequencymethodbyacomputerandadoptsheatingdevicetochangethetemperatureofthesampleAftergettingther

3、esonancefrequencyandQfactorofthevacancyandloadedcavitythesystemworksoutthedielectricparameterandlosstangentofthematerialbeingtestedFirst，thispaperbriefsthemicrowaveopenresonatorbasictheoryanditsapplicationItparticularint

4、roducesthescalarbeam—wavetheoryandbrieflyintroducesthecomplexsourcepointtheoryofthemicrowaveopenresonatorSecondlygivesthetheoreticalanalysestoafactorofmicrowaveopenresonatorduetothemirrorloss、mirrordiffractionlOSSandcoup

5、lingaperturelOSSindetailandobtainsthemorepreciseformulaeforcalculatingQfactorThird，anasymmetricaltypedopenresonatoratKubandisdesignedandthetraditionalmethodofmeasuringQfactorofthevacancycavityisimprovedFinallyitintroduce

6、sthestructureofthehightemperatureautomaticmeasurementsystematKuband，dielectricmeasuringmethodandtestingprocessThissystemadoptsPIDarithmetictocontroltheheatingdeviceThehighesttemperatureofthedielectricabove1000”CByusingco

7、mputerGPIBinterfaceandmicrowavesweepingfrequencytechniques，thesystemachieveshightemperatureautomaticmeasurementoflowlossradomedielectricandworkswithconvenienceandhighspeedFromthemeasuringresults，thissystemshowshighaccura