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CST同軸線器件的仿真設計分析—CST2013設計實例

    這個設計實例主要介紹和演示如何使用CST微波工作室仿真設計分析同軸線結構器件，設計使用的軟件版本是CST2013，所分析的同軸線器件是一個90°的同軸線連接器。

    CST微波工作室提供了多種求解器用于分析微波射頻器件各項性能，當前設計實例主要介紹仿真分析給出同軸線連接器的S參數.  這里會分別使用時域求解器和頻域求解器分析給出同軸線連接器的S參數性能分析結果。

    下圖是要分析的同軸線連接器結構模型的截面圖，圖示結構的同軸線連接器包含幾段同軸線，同軸線內導體是理想導體(pec)，整個結構安放在三個Teflon環上，同軸線內芯和外導體之間的填充介質是真空。

    Geometric Construction Steps 

    This tutorial will take you step-by-step through the construction of your model, and relevant screen shots will be provided so that you can double-check your entries along the way. 

      Create a New Project 

      After launching the CST STUDIO SUITE you will enter the start screen showing you a list of recently opened projects and allowing you to specify the application which suits your requirements best. The easiest way to get started is to configure a project template which defines the basic settings that are meaningful for your typical application. Therefore click on the Create Project button  in the New Project section.

    Next you should choose the application area, which is Microwaves & RF for the example in this tutorial and then select the workflow by double-clicking on the corresponding entry. 

    For the Coaxial structure，please select Circuits & Components   > Coaxial (TEM) Connectors > Time Domain Solver. 

     At last you are requested to select the units which fit your application best. For the Coaxial structure, please select the dimensions as follows:  Dimensions: mil;  Frequency: GHz; Time: ns.

    For the specific application in this tutorial the other settings can be left unchanged. After clicking the Next button, you can give the project template a name and review a summary of your initial settings:

    Finally click the Finish button to save the project template and to create a new project with appropriate settings. CST MICROWAVE STUDIO will be launched automatically due to the choice of the application area Microwaves & RF.

      Set the Working Planes Properties

     The next step is usually to set the working plane properties in order to make the drawing plane large enough for your device.  Since the structure has a maximum extent of 1320 mil along a coordinate direction, the working plane size should be set to at least 1500 mil.  These settings can be changed in the dialog box that opens after selecting View: Visibility > Working Plane > Working Plane Properties.

    In this dialog box, you should set the Size to 1500 (the unit which has previously been set to mil is displayed in the status bar), the Raster width to 100 and the Snap width to 50 to obtain a reasonably spaced grid.  Please confirm these settings by pressing the OK button. 

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