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[SOLVED] open boundary condition in CST

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nematollahi

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hi
Do you know what is the optimum distance from air box in CST?
what is the best answer for adding space to open boundary condition?
when I use lambda/4 and lambda/2 in central frequency the answers are different.
thanks
 

The default in CST is lambda/6 for the center frequency and for me it works good. But in guides for HFSS i've read always lambda/4 and it works too.
 

Change the distance unless s-parameters don't change anymore.
 
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