Coaxial waveguide design

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m.mohamed

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Is there anyone who had designed a coaxial waveguide using CST and extracted the cutoff frequencies?
I would like to test an absorbing material using coaxial waveguide measurements but at firs i want to simulate the model of coaxial waveguide and test the MUT(material under test) inside it, but i get some errors in the feeding port and consequently i don't get the correct results
 

What is exactly the error you are getting?
As that will help to suggest some solution
 

I uploaded here the (.cst) file, you can see by yourself what is the wrong, i dont know the cutoff frequency.
 

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  • CST DESIGN ENVIRONMENT.exe
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