矢量有限元法求解介質(zhì)填充縫隙散射和介質(zhì)密封波導(dǎo)口輻射問(wèn)題.pdf

1、南京航空航天大學(xué)碩士學(xué)位論文矢量有限元法求解介質(zhì)填充縫隙散射和介質(zhì)密封波導(dǎo)口輻射問(wèn)題姓名：楊寧申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電磁場(chǎng)與微波技術(shù)指導(dǎo)教師：徐金平2003.3.1矢藍(lán)卡『限元法求解介質(zhì)j；『l充縫隙l叟勻f和介質(zhì)桁封波導(dǎo)u輻射問(wèn)題ABSTRACTTheedge—basedFEMisanewmethoddevelopedinrecentyearswhichcarlgetridofthedisadvantagesofthenode—ba

2、sedFEMsuchastheproblemoffalsesolutionsanddi衢cultiesoftreatinginterfacebetweendifferentmediumandconductorordielectricedgesTheboundary—integralmethodissuitableforopenareasTheyarecombinedintoFEBImethodbyfieldcontinuities，wh

3、ichtakeadvantagesofthetwomethodsThetechniqueisemployedtoanalyzetheelectromagneticscatteringcharacteristicsofanisotropicdielectricfilledaperturesingroundedplaneTheobtainedresultsshowthattheproposedtechniqueisaccurateandef

4、ficientWaveguidesarebeingappliedextensivelyinmicrowavecircuitsTheedged—basedFEMincombinationofPMLiSappliedtocomputetheradiationofanopenwaveguideininfiniteplaneThecalculatedradiationpatternsareinagreementwiththatobtainedb

5、yanalyticalmethodTheradiationpatternofasealedwaveguideendisalsosimulated，SomeconclusionshavebeenmadeTheseresultsshowthatthistechniqueissuitableforrelatedengineeringproblemsKeywords：edgebasedFEM，electromagneticscattering，