《HFSS仿真角锥天线》PPT课件

例题：角锥喇叭,建模尺寸,6in,4in,3in,5.16in,1.944,2.65,0.4in,0.9in,0.315in,Airbox,HornAntenna,ThebaseoftheHorn,一、创建工程,第一步：打开HFSS并保存新工程打开HFSS软件后，自动创建一个新工程：Project1。由主菜单选FileSaveas，保存在指定的文件夹内，命名为horn。,一、创建工程,第二步：插入HFSS设计由主菜单选ProjectInsertHFSSDesign，则一个新项目自动加入到工程树中，默认名HFSSModel1。同时，在工程树的右侧出现绘图窗口。在工程树中选择HFSSModel1，点右键，选择Rename项，将设计命名为HornModel。,一、创建工程,第三步：选择求解类型由主菜单选HFSSSolutionType，在弹出对话窗选择DrivenModel项。,一、创建工程,第四步：设置单位：由主菜单选3DModelerUnits，在SetModelUnits对话框中选中in项。,二、创建模型,DrawingthebaseoftheHornClicktheBoxiconorgotoDrawRectangle.Nowmovethecursortoonecornerofthetopoftheantennabase,andclickonit,thenmovethecursortotheoppositecornerofthetopoftheantennabaseandclickagain.Therectanglewindowisopen.,Typefunnel_base.Assignmaterialtobevacuum.ChooseColorandTransparencyofyourpreference.ClickOk.Notethatthedimensionsoftherectangleshouldmatchthoseofthetopoftheantennabase.,二、创建模型,DrawingtheHornApertureNext,drawthe2Drectanglethatrepresentsthetopofthefunnel,ortheapertureofthehorn.,ClickRectangleiconorDrawRectangle.Typeinthefollowingvalues:0.972,1.325,5.475forx,yandz,respectively.Thentypethefollowingvalues:-1.944and-2.65fordxanddy,respectively.,Typehorn_topinthenamefield.Assignmaterialtobevacuum.ChoosetheColorandTransparencyatyoupreference.ClickOk.,二、创建模型,Connecting2DObjectstoCreatetheFunnelNowyoucanconnectthe2Dobjectsthatmakeupthebaseandthetopofthefunneltocreatethe3D,funnel-shapedobject.,Choosethehorn_topandfunnel_basefromtheModeltreebyholdingdowntheCtrlkey.Goto3DModelerSurfaceconnect.Nameitfunnel.,Notethattheobjectthatiscreatedasaresultofconnectingorunitingotherobjectscannotbeedited.Whenconnecting2Dobjects,forexample,youcanedittheoriginal2Dobjects,butyoucannoteditdirectlythe3Dobjectthatistheresultofusingtheconnectcommand.,二、创建模型,UnitingthehornbasewiththeFunnelAlthoughitisnotstrictlynecessary,youwillunitethetwo3Dobjects-thehornbaseandthefunnel,tocreateone3Dhornantennastructure.Thismakestheproblemsimplerbykeepingthenumberofobjectstoaminimum.,Choosebaseandfunnelfromthelistof3Dobjects.Then3DModelerBooleanUnite.ThenclinkOk.,二、创建模型,Drawingthe3DAirBoxAroundtheHornAntennaTosimulatethehornantenna,youneedtoencloseitinabounded“box”ofair.,ClickBoxiconorDrawBox.Typeinthefollowingvalues:-1.5,-2,and0forx,y,andz,respectivelyand3,4,and6fordx,dy,anddz,respectively.TypeAirBoxinthenamefield,vacuumistheassignedmaterialandchooseColorandTransparencyatyourpreference.ClickOk.,三、设置边界条件和激励源,ChoosethesurfacesofthehornandassignPerfectE.Allfacesofthehornshouldbechosenexceptthetopandthebottom.ThenBoundariesrightclickAssignPerfectEandnameitPerfE_horn_sides.,三、设置边界条件和激励源,Assignradiationboundarytotheairbox.ChoosethefacesoftheairboxandBoundariesright-clickAssignAddsweep.Setthevaluestothefollowing:SweepTypeisfast,FrequencySetuptypeisLinearcount,Startis8GHz,Stopis12GHzandCountis100.,四、设置求解项并分析,Makesuretovalidatecheck.HFSSInfiniteSphere,五、察看结果图,CreatingaFarfieldPlotThefarfieldplotisa3-Dplotofthefar-fieldradiationpattern.,Right-clickResults,thenchooseCreatereport.SetReportTypetoFarFieldsandDisplaytypeto3DPolar.,五、察看结果图,CreatingaFarfieldPlotThefarfieldplotisa3-Dplotofthefar-fieldradiationpattern.,WhenTracesWindowopen,leavethevaluesasset.MakesureitistheLastAdaptiveintheSolutionfieldandGeometryisInfiniteSphere1.,UnderSweeptab,makesur