CST 2012： Spiral antenna design

來源：edatop 更新時(shí)間：2024-08-23 閱讀：

Hello all,
I have one problem with designing log-spriral antenna. I used CST MWS 2012. I created analytical curve with these parameter:

Code:

' bodySub Main ()'@ define curve analytical: curve1:ramenoWith AnalyticalCurve     .Reset      .Name "rameno"      .Curve "curve1"      .LawX "0.5*diameter_inner*Exp(Ln(diameter_outer/diameter_inner)*t/(2*pi*num_turns))*Cos(t)"      .LawY "0.5*diameter_inner*Exp(Ln(diameter_outer/diameter_inner)*t/(2*pi*num_turns))*Sin(t)"      .LawZ "0"      .ParameterRange "0", "2*pi*num_turns"      .CreateEnd WithEnd Sub

But I have problem with number of points (we can see in the apendix). I need to increase the number of points the analytical curve and create a smoother curve. Of course, I wrote a matlab coda for sprial antenna generating, but I would use the analytical curve in CST.
Do you have some idea? How to increase the number of points?
Thank you for answer
Vladouch

When I did my Terahertz spiral antenna design in ADS, I created all the points in a Excel spreadsheet, then I imported those points as the X-Y coordinates to draw a custom line. I am sure you can do the same in CST.
I did a logarithmic Spiral using this equation
See attached Excel spreadsheet.