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help me about waveguide simulation with HFSS

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Montada21343

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how to find waveguide cutoff from HFSS please?

---------- Post added at 15:34 ---------- Previous post was at 15:28 ----------

 

oh1

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a waveguide is a high pas filter. So, if you look to check for its cutoff frequency, you do the simulation on a larger frequency bandwidth and when looking at scattering parameters, you will see when it cuttoff
 

Montada21343

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oh1​
yes but i would look for data
how i find data of waveguide cutoff
 

sv1437

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Look for the scattering parameters S21 and S11. Since it is a high-pass filter, after the cutoff frequency your S21 should be close to 0dB and S11 should be around -30 dB.
 

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