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1、空軍工程大學(xué)畢業(yè)論文(設(shè)計(jì))摘要微帶天線(xiàn)具有體積小,重量輕,低剖面,制造成本低,易于批量生產(chǎn),易于和微帶線(xiàn)路集成等特點(diǎn),能得到單方向的寬瓣方向圖,易于實(shí)現(xiàn)雙頻段、雙極化等多功能工作。這些優(yōu)點(diǎn)使得微帶天線(xiàn)在大約100MHz~100GHz寬廣頻域上,廣泛應(yīng)用于包括衛(wèi)星通信、雷達(dá)、遙感、制導(dǎo)武器以及便攜式無(wú)線(xiàn)電設(shè)備。論文首先回顧了微帶天線(xiàn)的發(fā)展史,介紹了它的結(jié)構(gòu)、優(yōu)缺點(diǎn)及應(yīng)用,然后給出了微帶天線(xiàn)的幾種分析方法,包括傳輸線(xiàn)法,空腔模型法,積分方程法等,并介紹了微帶天線(xiàn)圓極化的原理和實(shí)現(xiàn)方法以及微帶天線(xiàn)的饋電方式。然后在AnsoftHFSS中創(chuàng)建了一個(gè)單饋圓極化微帶天線(xiàn)和
2、雙饋圓極化微帶天線(xiàn),分析了S11和VSWR參數(shù),畫(huà)出了方向圖。為了實(shí)現(xiàn)圓極化,進(jìn)行了軸比的優(yōu)化仿真,達(dá)到了較為理想的結(jié)果。關(guān)鍵詞:微帶天線(xiàn)、圓極化、軸比38空軍工程大學(xué)畢業(yè)論文(設(shè)計(jì))AbstractThemicrostripantennashasthevolumetobesmall,theweightislight,thelowsectionplane,theproductioncostislow,easyvolumeproduction,easyandcharacteristicsandsoonmicrostriplineintegration,canobt
3、ainthesingledirectionwidepetaldirectionaldiagram,easytorealize,thedoublepolarizationdualrangeandsoonmulti-purposework.Thesemeritscausethemicrostripantennasinapproximatelythe100MHz-100GHzbroadfrequencyrange,widelyappliesinincludesthesatellitecommunication,theradar,theremotesensing,the
4、guidedweaponaswellastheportablewirelessapparatus.Thepaperfirstreviewedmicrostripantennas'shistory,introduceditsstructure,thegoodandbadpointsandtheapplication,thenhavegivenmicrostripantennas'sseveralanalysismethod,includingthetransmissionlong-basemethod,thecavitymodeling,theintegraleq
5、uationlawandsoon,andintroducedthemicrostripantennascircularpolarization'sprincipleandrealizesthemethodaswellasmicrostripantennas'sfeedmethod.ThenAnSoftHfssinthecreationofasingle-fedcircularpolarizationmicrostripantennaanddouble-fedcircularpolarizationmicrostripantennaanddouble-fedcir
6、cularpolarizationmicrostripantenna,theanalysisoftheS11andVSWRparameters,todrawapattern.Inordertoachievecircularpolarization,theaxiscarriedontheoptimizationsimulation,toamoresatisfactoryresults.Keywords:microstripantenna;circularpolarization;axialratio38空軍工程大學(xué)畢業(yè)論文(設(shè)計(jì))目錄摘要IABSTRACTII目錄
7、III第一章緒論1§1.1微帶天線(xiàn)的發(fā)展1§1.2微帶天線(xiàn)的定義和結(jié)構(gòu)1§1.3微帶天線(xiàn)的優(yōu)缺點(diǎn)2§1.4微帶天線(xiàn)的應(yīng)用3第二章微帶天線(xiàn)的原理技術(shù)4§2.1微帶天線(xiàn)的輻射機(jī)理4§2.2微帶天線(xiàn)的分析方法5§2.2.1傳輸線(xiàn)模型法5§2.2.2空腔模型法8§2.2.3積分方程法8§2.3微帶天線(xiàn)的饋電方法9§2.4微帶天線(xiàn)圓極化技術(shù)10§2.4.1圓極化天線(xiàn)的原理10§2.4.2圓極化實(shí)現(xiàn)技術(shù)11§2.5其他形式的微帶天線(xiàn)15第三章圓極化微帶天線(xiàn)的仿真與優(yōu)化19§3.1AnsoftHFSS高頻仿真軟件的介紹19§3.2圓極化微帶天線(xiàn)的仿真優(yōu)化19§3.2.1圓極化
8、微帶天線(xiàn)的仿真設(shè)計(jì)19§