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[SOLVED] Strange surface current plot

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Iktech

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Hi All,
I tried obtaining a surface current plot of my Vivaldi antenna in Ansys HFSS however, the current seems to be restricted to a small portion of the antenna (see picture attached). But in published papers, the surface currents are shown covering a good portion of the metallization boundary. I have tried increasing the port voltage (I am using a lump port excitation) from 1 volt to 10 volt still no difference. How do I obtain a correct surface current plot of the antenna? Kindly find the hfss file attached.

Thanks in anticipation.
 

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  • surface current.png
    surface current.png
    10.3 KB · Views: 72
  • antenna.zip
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