矩形微带贴片天线的仿真设计实验目的:运用HFSS的仿真能力对矩形微带天线进行仿真实验内容:矩形微带天线仿真:工作频率7.55GHz天线结构尺寸如表所示:名称起点尺寸类型材料Sub-14.05,-16,028.1,32,0.794BoxRogers5880(tm)GND-14.05,-16,-0.0528.1,32,0.05BoxpecPatch-6.225,-8,0.79412.45,16,0.05BoxpecMSLine-3.1125,-8,0.7942.49,-8,0.05BoxpecPort-3.1125,-16,-0.052.49,0,0.894RectangleAir-40,-40,-2080,80,40BoxVacumn一、新建文件、重命名、保存、环境设置。(1)、菜单栏Filesaveas,输入0841,点击保存。(2).设置激励终端求解方式:菜单栏HFSSSolutiontypeDrivenTermin,点击OK。-1-(3)、设置模型单位:3DModelerUnits选择mm,点击OK。(4)、菜单栏ToolsOptionsModelerOptions,勾选”Editpropertiesofnewpri”,点击OK。二、建立微带天线模型(1)、插入模型设计(2)、重命名-2-输入0841(3)点击创建GND,起始点:x:-14.05,y:-16,z:-0.05,dx:28.1,dy:32,dz:0.05修改名称为GND,修改材料属性为pec,(4)介质基片:点击,:x:-14.05,y:-16,z:0。dx:28.1,dy:32,dz:0.794,修改名称为Sub,修改材料属性为RogersRT/Duriod5880,修改颜色为绿色,透明度0.4。-3-点击OK(5)建立天线模型patch,点击,x:-6.225,y:-8,z:0.794,dx:12.45,dy:16,dz:0.05命名为patch,点击OK。(6)建立天线模型微带线MSLine点击,x:-3.1125,y:-8,,z:0.794,dx:2.46,dy:-8,dz:0.05,-4-命名为MSLine,材料pec,透明度0.4选中Patch和MSLine,点击ModelerBooleanUnite(7)、建立端口。创建供设置端口用的矩形,该矩形连接馈线与地。ModelerGridPlaneXZ,或者设置点击,创建Port。命名为port双击Port下方CreatRectangle-5-输入:起始点:x:-3.1125,y:-16,z:-0.05,尺寸:dx:2.46,dy:0,dz:0.894(8)、创建Air。点击,x:-40,y:-40,z:-20,dx:80,dy:80,dz:40修改名字为Air,透明度0.8.完成后总视图-6-三、设置边界条件和端口激励。(1)设置理想金属边界:选择GND,右击AssignBoundariesPerfectE将理想边界命名为:PerfE_GND,,点击OK。-7-(2)设置理想金属边界:选择GND,右击AssignBoundariesPerfectE(2)、设置边界条件:选择Port,点击AssignBoundariesPerfectE在对话框中将其命名为PerfE_Patch,点击OK。-8-(3)、设置激励。选中port,右击。AssignExcitationsLumpedPort将端口命名为Port1,勾选GND。点击OK。(4)、设置辐射边界。选中Air,右击AssignBoundariesRadiation,-9-命名为Rad1,点击OK。四、求解设置,设置求解频率。(1)、求解设置右击AnalysisAddSolutionSetupSolutionFrequency:7.55GHz,MaximumNumberofPasses:15,MaximumDeltaSperPass:0.02,点击确定。-10-(2)、设置求解频率右击Setup1,AddFrequencySweep选择Setup1,SweepType:Fast,FrequencySetupType:LinearCount,Start:6GHz,Stop:9GHz,stepsize:0.01,选中SaveField复选框,点击OK。-11-(3)、设置无限大球面。右击RadiationInsertFarFieldSetupInfiniteSpherePhi:Start:0deg,Stop:360deg,Step:10degTheta:Start:0deg,Stop:180deg,Step:10deg五、设计检查与分析。点击,点击Close。-12-右击AnalyseAnalyeAll。进程框信息管理框,显示结果。六、后处理操作(1)、S参数右击ResultCreateTerminalsolutiondataReportrectanglePlotReportType:ModalSParameters;DisplayType:Rectangle,在Trace窗口中设置,Solution:Setup1:Sweep1,Domain:Sweep,点击Y标签,Category:Sparameter,Quantity:S(p1,p1),Function:dB.-13-点击NewReport.(2)电压驻波比右击ResultCreateTerminalsolutiondataReportrectanglePlot如下图选择-14-结果(3)、Smith圆图右击ResultCreateTerminalsolutiondataReportSmithchart-15-如下图选择点击NewReport.(4)、平面方向图右击RadiationinsertFarFieldSetupInfinitesphere.如下设置-16-右击resultcreatedfarfiledsreportradiationpattern如图设置分别选择XOY,Gain,GainTotal,dB.点击NewReport.-17-(5)、3D远场增益方向图。右击ResultsCreateFarFieldsReportRadiationPattern.在Trace窗口中设置:Solution:Setup1:LastAdptive,在Sweeps标签中,在Name中点击变量Phi,在下拉菜单中选择Theta,Category:Gain;Quantity:GainTotal;Function:dB.点击NewReport.-18-(6)、其他参数右击RadiationInfinitespherecomputerantennaparameters设置如下点击确定-19-结果分析:S参数的结果与理论结果基本一致,中心频率在7.55左右,S参数小于-10dB,满足要求,参数还能优化。2D辐射远场则从360度范围内反映了实验天线在各个方向的辐射强度