微波介質(zhì)材料自由空間測試方法的研究.pdf

1、分類號UDC。密級Y839755學(xué)位論文(題名和副題名)(作者姓名)指導(dǎo)教師姓名廑塞腿數(shù)控——(職務(wù)、職稱、學(xué)位、單位名稱及地址)申請學(xué)位級別亟專業(yè)名稱電鱟垣盞煎邊撞盤一論文提交日期20061論文答辯日期20063學(xué)位授予單位和日期墊壬拄拉太堂——答辯委員會主席評閱人2006年月日注l注明《國際十進(jìn)分類法UDC))的類號AbsttactAbstractMicrowavedielectricmaterialshavebeenwidelyu

2、sedintheinformationandcommunicationdomainBecauseofthatknowingthedielectricmaterials’microwavecharacteristicsisthemostimportantfactorinapplications，itisverysignificanttomeasuretheelectromagneticparametersofmediummaterials

3、ThoughthematerialshavebeendiscoveredsincelastcenturymanyproblemsaboutsuchkindofcomplexmediumstillleftforresearchRecentlNwiththeadvancementofmodemmeasurement，theimprovementofthecalculatequalityandthedevelopmentofhypersynt

4、hesistechniquesandpolymerengineering，manydifficultproblemsCanbesolvedsuccessfullyInthispapermeasurementtecmiquesofbomrigidityandsoftmediummateralshavebeensystemicresearchedCorrespondingmeasurementhasbeenproposedandmanypr

5、oblemsondielectricmaterials’measurement，suchasphaseshiftambiguityproblem，instabilityproblemandSOon，havebeensolvedThemainresearchworkincludes：1Throughanalysesofthecorrelativemeasurementtechnologyandconsiderationofthechara

6、cteristicofthemeasuredmaterials，thefree—spacemeasurementmethodisestablishedandthephysicalmodelsarebuilt，Thetransmissionpropertiesofelectromagneticwaveinfree—spacearediscussed，basingonMaxwellformulaeandtheconstitutiverela

7、tionsofmediurnmaterialsThemeasuredmaterialsareregardedastwo—portnetworksandthroughtheoryanalysis，therelationsbetweenmaterialparametersofmediumandSparmnetersarefonnulated，2Freespacemeasurementsystemisestablishedaftertheor

8、yanalysis，andthecalibrationkitsusedinthissystemarefabricatedTheTRLcalibrationtechniqueandthetime—domaingatingfeatureofthenetworkanalyze／‘a(chǎn)reusedtOeliminatetheeffectsofundesirablemultiplereflectionsAutomatictestsoftwareis