How to get the Reflection Parameters of a Metamaterial illuminated by a Circularly Polarized Wave?
I am trying to design a Circularly Polarization sensitive metasurface absorber. I want to know , how to Get the Refelctance (or S parameters) when I try to illuminate a metasurface unit cell with a Circularly Polarized wave. The Circularly Polarized wave is being incident on the unit cell through floquet port having two modes, 90degree out of phase from each other. I have only one port here as the side other than the side being illuminated is having a perfect conductor. I am able to plot the S(FloquetPort1:1,FloquetPort1:1) ; S(FloquetPort1:2,FloquetPort1:2); ActiveS(FloquetPort1:1) and ActiveS(FloquetPort1:2) plots.
Now, I am unable to get the Reflectance of "Circularly Polarized wave" ,as addition of the Active S-Parameters gives me same result for both handedness of the incident CP wave. In a latter stage, I also want to develop the unit cell absorption.
Any help would be appreciated.😊