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ID:33993020
大小:5.75 MB
页数:74页
时间:2019-03-03
《基于石墨烯器件和大带宽频率选择表面的分析》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、AbstractInrecentyears,ascompetitioninthewirelesscommunications,communicationdevelopsinthedirectionofmulti—band,broadband,Thedemandforcommunicationdeviceiscapableofversatileworkincreases.Moreover,therapiddevelopmentofwirelesscommunicationtechnology,modernwi
2、relesscommunicationsystemshasbeenputhigherrequirements.Multi-band,multi-functionwirelessdevicesbecomepopularforscholarsathomeandabroad.Thispaperdescribesbackgroundandstatusofdevelopmentathomeandabroadofthegraphenedevicesandku-bandfrequencyselectivesurface.
3、Thenintroducedthetheoreticalbasisofthispaper.First,westudythegrapheneconductivitymodel,andderiveprinciplesofrecontigurableconductivityofgraphene.Thenstudythemicrostrippatchantennatheory,whichisthetheoreticalbasisfortheTHzgraphenemicrostrippatchantenna.Fina
4、ll5westudythesplitringresonatortheorywithequivalentcircuitanditsequivalentcircuitofcomplementaryStructure.Thispaperproposesadipoleantennabasedongrapheneanditsantennaarray.Byadjustingtheconductivityofgrapheme,wecanachievereconfigurablefrequencyandachieveano
5、velTHzantennawhichhasaswitchingcharacteristic.Thegainofgraphenedipolearrayantennacanbeachievedtunable.Thenstudyasinglemicrostrippatchantennabasedongrapheneanditsarrayantennatoachieveareconfigurablefrequencyandgain.Wealsostudyfractalpatchantennabasedongraph
6、eme.Weusetheimpedancesurfaceofthegraphenegivenbythetheoryofconductivityofgraphemetoresearchongraphenefractalantenna.FinallyweresearchonthegrapheneFSSinmicrowaverangewithusingsurfaceimpedancemethod.Ithasreconfigurableabsorptionintensity.ChapterIVshowsfreque
7、ncyselectivesurfaceswithdifferentstructures(FSS)inku-band.Firstwerise@litringresonator(SRR)andcomplementarysplitringresonator(CSRR)tomakeband-stopandband-passfrequencyselectivesurface.Andwestudytheeffectofline-width,dielectricconstant,substratethicknessand
8、numberoflayersonband-width.12-15GHzpassbandfrequencyselectivesurfacesweredesignedwiththestructureofCSRR.ThenstudyinfluenceofIIIAbStractdifferentstructuralparametersonband-widthandresonancepoint.Themeasuredres
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