獲取電磁輻射極化參量的測量儀的分析與研究.pdf

1、上海大學碩士學位論文獲取電磁輻射極化參量的測量儀的分析與研究姓名：李淑娟申請學位級別：碩士專業(yè)：無線電物理指導教師：李英20060501圭堂查堂堡主蘭堡堡苧————ABSTRACTThepolarizationanalysisofelectromagneticradiationofmicrowaveandextremelyhighfrequencieshasbeguntobeemployedwithincreasingsuccessin

2、variousfieldsinrecentyearsSimultaneous(orquasi，simultaneous)measuringoffourindependentradiationparametersinsteadofasingleparameter(intansity)substantiallyincreasetheamountofinformationontheobjectVariouspolarizationanalys

3、ismethodsareintensivelybeingdevelopedinabroad，butthereareonlyfewpeopleworkingonsuchanalysisinChinaContentsinthispaperareasbelow：Atfirst，thestudystatus，levelanddevelopmenttrendofthepolarimeterofobtainingtheelectromagnetic

4、radiationpolarizationparametersinChinaandabroadaredescribedWepresenttheaidandthepurportofthistask，TheadoptedmethodinthistaskandcorrelativeproblemsarediscussedsimplytooSecondly，weanalysisthetheoryoftheDGRP(differentialgat

5、edradiopolarimeter)andthemaincompositiveelementsinthemicrowavecircuitsTheconicalcorrugatedhom，theturnstilejunction(orturnsplitter)andPINmicrowaveswitchisdiscussedbothintheoryandbythesh山ationsofhvare——ANSOFTHFSSTherelativ

6、esimulationresultsandsomemodelsoftheinstrumentarepresentedandanalyzedThirdlywedesignakindofSlW(substrateintegratedwaveguide)turnstilejunctionwhichhassimilarpropertiesasconventionalrectangularwaveguide，Itissimple，lightand

7、easytobeintegratedThefeasibilityofthisstructureisprovedbyusingthecommercialmodulatesoftwareHFSSIntheend，resonantconditions，resonantperformancesandelectromagneticdistributionsetcofstepped—impedanceresonatorarecomputedanda

8、nalyzedAnoveldoubleTshapedmicrostripbandstopfilterwithDGSisproposed，anditsfilterperformancesaresimulatedThefiltersdesignedinthispaperhaveadvantagessuchaswidebandwidth，highattenuation，simplestructule，easymanufactureandlow