Calculating phase velocity of TM01 mode in HFSS driven model

Hi,

I'm trying to plot the phase velocity of the propagating TM01 mode in HFSS.

I'm using single frequency, and according to numerical analysis, the structure should change the phase velocity along a line (for example, z-axis).

Any ideas on how to do it?

Thanks!

Welcome adiha,

Perhaps extract it from S21 for varying lengths of the line?

Could you please elaborate? how do I extract S21 (phase) from my model? All the examples I saw included frequency sweep, and I have only single frequency.

Thanks!