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1、空軍工程大學(xué)畢業(yè)論文（設(shè)計）摘要微帶天線具有體積小，重量輕，低剖面，制造成本低，易于批量生產(chǎn)，易于和微帶線路集成等特點，能得到單方向的寬瓣方向圖，易于實現(xiàn)雙頻段、雙極化等多功能工作。這些優(yōu)點使得微帶天線在大約100MHz～100GHz寬廣頻域上，廣泛應(yīng)用于包括衛(wèi)星通信、雷達、遙感、制導(dǎo)武器以及便攜式無線電設(shè)備。論文首先回顧了微帶天線的發(fā)展史，介紹了它的結(jié)構(gòu)、優(yōu)缺點及應(yīng)用，然后給出了微帶天線的幾種分析方法，包括傳輸線法，空腔模型法，積分方程法等，并介紹了微帶天線圓極化的原理和實現(xiàn)方法以及微帶天線的饋電方
2、式。然后在AnsoftHFSS中創(chuàng)建了一個單饋圓極化微帶天線和雙饋圓極化微帶天線，分析了S11和VSWR參數(shù)，畫出了方向圖。為了實現(xiàn)圓極化，進行了軸比的優(yōu)化仿真，達到了較為理想的結(jié)果。關(guān)鍵詞：微帶天線、圓極化、軸比I空軍工程大學(xué)畢業(yè)論文（設(shè)計）AbstractThemicrostripantennashasthevolumetobesmall,theweightislight,thelowsectionplane,theproductioncostislow,easyvolumeproduction,
3、easyandcharacteristicsandsoonmicrostriplineintegration,canobtainthesingledirectionwidepetaldirectionaldiagram,easytorealize,thedoublepolarizationdualrangeandsoonmulti-purposework.Thesemeritscausethemicrostripantennasinapproximatelythe100MHz-100GHzbroadf
4、requencyrange,widelyappliesinincludesthesatellitecommunication,theradar,theremotesensing,theguidedweaponaswellastheportablewirelessapparatus.Thepaperfirstreviewedmicrostripantennas'shistory,introduceditsstructure,thegoodandbadpointsandtheapplication,the
5、nhavegivenmicrostripantennas'sseveralanalysismethod,includingthetransmissionlong-basemethod,thecavitymodeling,theintegralequationlawandsoon,andintroducedthemicrostripantennascircularpolarization'sprincipleandrealizesthemethodaswellasmicrostripantennas's
6、feedmethod.ThenAnSoftHfssinthecreationofasingle-fedcircularpolarizationmicrostripantennaanddouble-fedcircularpolarizationmicrostripantennaanddouble-fedcircularpolarizationmicrostripantenna,theanalysisoftheS11andVSWRparameters,todrawapattern.Inordertoach
7、ievecircularpolarization,theaxiscarriedontheoptimizationsimulation,toamoresatisfactoryresults.Keywords：microstripantenna；circularpolarization;axialratioII空軍工程大學(xué)畢業(yè)論文（設(shè)計）目錄摘要.................................................................................
8、.....................IABSTRACT...........................................................................................II目錄...................................................................................................III第一
