资源描述：
《Bandwidth Enhancement of Small-Size Planar》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、IEEETRANSACTIONSONANTENNASANDPROPAGATION,VOL.60,NO.4,APRIL20121705BandwidthEnhancementofSmall-SizePlanarTabletComputerAntennaUsingaParallel-ResonantSpiralSlitKin-LuWong,Fellow,IEEE,Yu-WeiChang,andShu-ChuanChen,StudentMember,IEEEAbstract—AninternalplanartabletcomputerantennahavingT
2、ABLEIasmallsizeofprintedona0.8-mmthickANTENNADIMENSIONSOFTYPICALWWANLAPTOPCOMPUTERANTENNASFR4substratefortheWWANoperationinthe824–960andINRECENTARTICLES.,ANDSTANDFORTHEHEIGHT,WIDTHAND1710–2170MHzbandsispresented.TheantennacomprisesaTHICKNESSOFTHEANTENNADIMENSIONS.THEPLANARSTRUCTUR
3、ESdrivenstrip,aparasiticshortedstripandagroundpad,allprintedINDICATETHATTHEANTENNAISPRINTEDONADIELECTRICSUBSTRATE,onthesmall-sizeFR4substrate.ForbandwidthenhancementofWHILETHE3-DSTRUCTUREINDICATESTHATTHEANTENNAISINAtheantenna’slowerband,theantennaappliesaparallel-reso-THREE-DIMENS
4、IONALCONFIGURATIONnantspiralslitembeddedinthegroundpad,whichgeneratesaparallelresonanceatabout1.2GHzandinturnresultsinanewresonanceoccurrednearbythequarter-wavelengthmodeoftheparasiticshortedstrip.Thisfeatureleadstoadual-resonancecharacteristicobtainedfortheantenna’slowerband,maki
5、ngitcapableofwidebandoperationtocoverthedesired824–960MHzwithasmallantennasize.Theantenna’supperbandisformedbythehigher-orderresonantmodecontributedbytheparasiticshortedstripandthequarter-wavelengthresonantmodeofthedrivenstripandcancoverthedesired1710–2170MHzband.Detailsofthepropo
6、sedantennaandtheoperatingprincipleoftheparallel-resonantspiralslitarepresented.IndexTerms—Mobileantennas,parallel-resonantspiralslit,putersaregenerallyrequiredtohavealengthofabout50mmorprintedantennas,tabletcomputerantennas,WWANantennas.largertobemountedalongthetopedgeofthedisplay
7、groundtocovertheGSM850/900operation(824–960MHz)andtheGSM1800/1900/UMTSoperation(1710–2170MHz)[4]–[14].I.INTRODUCTIONTableIliststhedimensionsoftypicalWWANlaptopcomputerOobtainwidebandoperationwithasmallantennasizeisantennasinrecentarticles.Thethicknessof0.8mmfortheToneofthemajordes
8、ignchallengesoftheinternalWWANpla
