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HFSS Problem - I don't get a symmetric H-field

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HFSS Problem

I drew an antenna shown in the attached file, however I don't get a symmetric H-field on the surface of the cylinder. I think I didn't assign the current excitation properly. If you can figure out what the problem is, please inform me.

Thank you for your prospective helps.
 

Re: HFSS Problem

I don't understand the model from the pictures.
If you upload the hfss-file, I can check it.
 

Re: HFSS Problem

Now I've changed the shape of the antenna, and the new simulation can be found in the attachment. I converted the curved shapes into not curved ones for the antenna. However, I cannot assign a current excitation on the antenna now.

Thank you for your helps.
 

Re: HFSS Problem

I don't know this kind of antenna setup, but I can excite a current without problems. Is this how it should look like?
 

Re: HFSS Problem

I was to assign a current excitation on the vertical part of the antenna, but I solved this problem when I deleted the unite function of these 4 cylinders which make the antenna.
However, now I'm confused about the mesh plot of the antenna. When I look at it, I don't see triangles as I'm supposed to. Is the mesh plot of the antenna proper, or is there a way for me to correct it if it's wrong?

I appreciate your help,
Thank you very much!
 

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