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waveport problem in HFSS

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vacikel

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I made this waveport in HFSS but there are problems with it. It has a linear S11 which is totaly wrong.

can anyone help me?

I attached the project file :)
 

jallem

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I dont think you setup the port properly. One
side of the port is PEC surface and the other
side is a dielectric with e=80. I think you need
to revise that.
 

    vacikel

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vacikel

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I totaly changed the geometry of waveport part now I see characteristic S11 of birdcage coil

thanks
 

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