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Time:
2〕能够创立的根本模型
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Voltage:
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Current:
Conductance:
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3〕改变视角
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RotateViewPlanePanDynamicZoomZoom
ResetViewToStructure
ResetView
Themodesettingaffectsthebehaviorasfollows:
□Rotate:
Thestructurewillberotatedaroundthetwoscreenaxes.
□RotateVi&wPlane:
Thestructurewillberotated泊thescreen'splane
口Pan:
Thestructurewillbetranslatedinthescreenplmn它followingthemousecursormovement,
□DynamicZoom:
Movingthemouseupwardswilldecreasethe200mfactorwhil巳movingthemousedownwardsincreasesthezoomfactor
□Zoom:
Inthismode日rubberbandrectanglewillbedefinedbydraggingthemouse.Afterreleasingtheleftmousebutton,thezoomfactorandtheviewlocationwillbeupdatedsothattherectanglefilsupthescreen.
快捷键为:
□Ctrl\SameasTotale"mode.
□Shift:
Sameas“planerotation"mode.
□Shift+Ctrl:
Sameasupan,rmode.
视觉效果的改变:
DrawingplaneWireframe
4)几何变换
四种变换:
口Translate:
Thistransformationappliesatranslationvectortotheselectedshape.
□Scale:
Bychoosingthistransformationyoucanscaletheshapealongthecoordinateaxes.Youmayspecifydifferentscalingfactorsinthedifferentcoordinatedirections.
□Rotate:
ThistransformationappliesarotationoftheshapearoundacoordinateaxisbyafixedangleYoumayadditionallyspecifytherotationcenterintheOriginfield.Thecentermayeitherbethecenteroftheshape(calculatedautomatically)oranyspecifiedpoint.Therotationang怡andaxissettingsarespecifiedbyenteringthecorrespondingangleintheentryfieldforthecorrespondingaxis.(e.g.entering45intheyfieldwhileleavingallotherfieldssettozeroperformsarotationaroundtheyaxisof45degrees.)
□Mirror:
Thistransformationallowsyoutomirrortheshapeataspecifiedplane.ApointonthemirrorplaneisspecifiedintheOriginfieldandtheplanesnormalvectorisgivenintheMirrorp/anenormalentries.
5〕图形的布尔操作
四种布尔操作:
5h-dXD
□Add:
Addthesecondshapetothefirstone.Keepsthecomponentandmaterialsettingsofthefirstshape.
□Subtract:
Subtractthesecondshapefromthefirstone,Keepsthecomponentandmaterialsettingsofthefirstshape.
□Intersect:
Intersectthefirstwiththesecondshape.Keepsthecomponentandmaterialsettingsofthefirstshape.
□Insert:
Insertthesecondshapeintothefirstone.Keepsbothshapeswhileonlychangingthefirstshape.
例如:
立方体欄加〞圆球
&詛1
两物体“相交"
2,选择第一个物体〔立方体〕
这里以“减〞来说明具体操作
1,两种不同材料的物体
Objects->Boolean-'Subtract
3点击工具栏上的图标叵或在主菜单项选择择
4,选择第二个物体〔圆球〕
6〕选取模型的点、边、面
5,回车确定
对每种“选取操作〞,都必须选择相应的选取工具。
从主菜单
Objects—>Pick—>PickPoint/…..或从工具栏上选择均可:
Pickedgemidpoints1Pickpointsoncircles
Pickfaces
PickedgeendpointsPickedges
Pickcirclecenters
Pick怕cecenters
7〕倒直角和倒圆角
选取的棱边经常被用来倒直角或倒圆角
工具栏中的
8〕拉伸、旋转和渐变
对被选端面,可以进行拉伸、旋转和渐变操作
9〕坐标变换
CSTMWS中有两套坐标系统
1.全局坐标系〔X,丫,Z〕很多功能只针对它有效;
2.工作坐标系〔U,V,W〔简称WG〕可方便的用它创立倾斜物体
全局晦标系工作坐标系
物•旳与所选曲对齐
筒wc$与所选棱边对齐
10〕创立曲线
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11〕创立平面导线
可以利用曲线来创立有限宽度和厚度的导线
12〕求解器的选择
所有的设置完成后,便可设置求解器,准备求解,CSTMWS提供了
时域、频域和本征模三个求解器,其中时域求解器为MWS的专长,应用范围最广,精度最高。
设置时域求解器
点击工具栏上图标
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或从主菜单项选择择Solve->TransientSolver
■餐鼓励的端【1K所有端II
N选宦的端口乳某个特定端口
獄励信号类亀
1、高斯脉冲
2、矩形脉冲
3、用户自定义
求#m度
开始时城求解
忧化
翻开自适应网格加密
天线计算的步骤
1.Selectanantennaprojecttemplate
2.Setunits(optional)
3*Setbackgroundmaterial(optional)
4.DefinEstructure
5.Setfrequencyrange
6.Set(open)boundaryconditions(optional)
7.Defineexcitationports
8.Set(farfield)monitorsand/orprobes
9.Specifyfarfieldresultprocessingtemplates(optional)
10.Starttransientsolver
11.Analyzeresults(inputimpedance,farfields,etc.)
2、微带天线仿真
求解的问题
分析一个圆形贴片天线,给出S参量和方向图。
Alldimensionearggiv^rinmm
CircleCenter
结构及尺寸如下图。
模型分解:
见需要建的模型分解成根本模块或能用根本模块通过一定的操作的模块。
、仿真分析
1〕选择模板
注意:
即使选择了模板,也要检查单位和背景材料设置是否正确
2〕设置单位
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绘制介质板
定义介质板材料
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最终可得:
(3)创立接地板
通过“Extrude〞工具拉伸被选面来创立地板
选择介质板底面:
使用“Extrude〞工具:
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馈电同轴线用做鼓励源。
因为馈点位于圆形贴片的非对称位置,
采用工作坐标系比拟好。
定义工作坐标系:
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一、同轴线的介质体
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