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CST 2012: Spiral antenna design

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发表于 2014-10-3 00:00:00 | 显示全部楼层 |阅读模式
易迪拓培训微波射频和天线设计培训
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      



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发表于 2014-10-4 00:00:00 | 显示全部楼层
易迪拓培训微波射频和天线设计培训
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.





It was about 10 years ago.      

LogarithmicSpiral.zip (32.5 KB)
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