126.5ghz矩形開口波導探頭校準系統(tǒng)的研究

1、北京交通大學碩士學位論文126.5GHz矩形開口波導探頭校準系統(tǒng)的研究姓名：王志飛申請學位級別：碩士專業(yè)：通信與信息系統(tǒng)指導教師：王化深201112北京交通大學碩士學位論文ABSTRACTABSTRACTABSTRACT：WitllmedeVelopmentofmicrowavetechn010鼢ne小fieldmeaSur鋤enth2Lsbeenwidelyused，asoneofcorecomponentsofne冊fieldmea

2、Lsurementsystem，openendedrectaIlgularwaVeguideprobe(0EWG)hasa嘶ticalinnuenceonmeasurementaccuracyForei印institutionsalreadyhaVemeabilityofOEWGcalibrationbqlowKabandwithhighaccuracy，comparedwithwhichChinahasawideg印int11erel

3、evantfieldsBothforsciemificresearcha11dnationaldef醯se，仃aceabilityofOEWGisimminentlyneededTtlesubiectinV01vedinthispaperisn鯽NationalInstimteofMeⅡ010必whichaimsto占stabhShacalibrationsystemforOWEGworkingfrom1GHz～265GHz，solVe

4、仃aceabilityissuesofabsolutegainaIldpattemofthese0WEGaIldestablishnationalstandardofwave呈皿idecalibrationsoaStomeettheuI苫entneedsofeconomicdevelopmentandnationaldefense，improveservicelevelsofrelatedindllstriesaswenaspromot

5、ethedevelopmentofmicrowaVemeaSurementtechniqueThispapermakessometheoreticalaJlalysisforthecharact鰣sticsofoWEGseveralcommonlyusedfomulastoestimatethegainof0WEGare百VenSimulationaremadefortheOWEGwhoseresultsshowmatOWEGhasam

6、Uradiationpattemwithawide3dBbaIldwidth，HplanepattemismuchnarrowertllanEplanepattem；megainvalueofoWEGislowa11dincreaseswimthefrequency；merearenonullsatmeboresidegainoVertheusableballdwidthOnthebaLsisofaIlalysis舶mtheo叫ands

7、imulation，thisp印erelaboratesmeprinciple，site，processaIldotheraspectsoftheOWEGcalibrationsystemMinimummeasurementdistaJlcesatdi骶rent丘equenciesa11dmesizeofallechoicchanmeraswellasmefomulasforcalculatingthegainofOWEGare酉Ven

8、1’oestimatemeaccuracyofthecalibmtionsyst鋤，themeasurementgainsofWR284arecomparedwiththesimulationonesandtheresultsshowthatoverthewh01ebaIldwidth，merearegooda盯eementsbetweenthemeasurementandsimulation，鋤ongwhichthemaximumde

9、viationis025dBAttheendofthispaper’basicconceptsandassessmentprinciplesofuncertaintyareintroduced，allpossiblefactorsareanalyzedAmathematicaluncertaintymodelhasbeenestablishedandanalvzedbasedonthemeasurementdataofWR284OWEG