Still no reply !! HFSS circular waveguide

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dear friends,

I have placed 3 posts and did not get a single reply......

I request you if anyone has a guide to model and simulate a circular waveguide in HFSS.

I failed to get correct polarization of e field on ports.....so my S parameters are also not correct.

I need help from you guys.

Please give me a tutorial or respond atleast.
 



Posting your model will help people understand your problem.
 

Dear Friend
I have simulated a CWG with HFSS11 and 12. The problem that you show is really exist. I think that the problem is originated from degenerate modes in a CWG. In HFSS11, If you use 2 mode when defining ports and then polarize one of them you can reach true answers for S-parameters. However in HFSS12 this is not true, and the answer is approximately true. I am working on this to fix the proble. I will make you poted if I could find the answer.
Best
 
Dear Friend
I finally find out how to solve the problem. You should select 2 mode for each port and 2 perpendecular integration line(IL) for each mode and assign each IL to each of the these modes. Attached file show the structure and the method that I have used to solve this problem.
Best
 
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