新型超寬帶天線的研究、設(shè)計和制作.pdf

1、浙江大學(xué)信息學(xué)院博士學(xué)位論文新型超寬帶天線的研究、設(shè)計和制作姓名：丁婕琛申請學(xué)位級別：博士專業(yè)：光學(xué)工程指導(dǎo)教師：何賽靈20080401浙漫大學(xué)溥圭學(xué)位論文AbstractAbstractWiththedevelopmentofultra—widebandcommunicationsystems，itsparksgreatinterestsonthedesignsofultra—widebandantennas，oneofthemost

2、importantcomponentsofthewholesystemBasically，theultra—widebandantennasshouldbelow—profile，compact，lightweightandeasytointegratewithprintedcircuiteboardTheaimofthethesisistodesigndifferentkindsofantennasthatmeettherequire

3、mentsofultrawidebandsystemsanddiscussvariedapproachestoimprovetheperformanceordecreasethesizeoftheantennas。First，webrieflyintroducetheultra—widebandtechnologyandsomebasicdesignparametersoftheultra—widebandantennas，andthe

4、nretrospectthehistoryofthedevelopmentofwideband／ultra—widebandantennasSecond，wetalkaboutafewnumericalmethodsthatareusedinthedesignprocessoftheultrawidebandantennas，mainlydiscussingFiniteElementMethod(FEM)andFiniteIntegra

5、tionTechnology(FIT)。After落懿，wefocusonthedesignsandcalculationsoftheultra—widebandmonopoleantennasinordertofigureoutwaystoimprovetheperformanceoftheantennasInthispart，westartfromtheplanarmonopoleantennas，discussingitswork

6、ingprinciples，basicstructures，andpresentafewdesignexampleswhichmeetthebasicrequirementsoftheultrawidebandsystemThen，inorderteducethebulkysizeoftheplanarmonopoleantennas，weproposetheprintedmonopoleantennas，whicharelow—pro

7、file，compactsize，andeasytointegratewithprintedcircuitboardwhileworkinginultra—widefrequencybandsFinally，wedesignafewultrawidebandantennaswithmultipleband—notchedcharacteristicstoavoidadjacentinterferencesbycombiningtheno