HFSS, Axial Ratio for Circular Polarization

Dear friends,

I have modeled a steped septum square waveguide polarizer, which makes two linear pol to a RHCP or LFCP and vice versa.

I have find all the S Parameters very good.

But I need to see the axial ratio between the two orthogonal components Ex and Ey.

Please explain me how can I plot the axial ratio of the CP in waveguides.


Best regards