fss in cst
Hi shahnazyasir,
1/I think you must try to use a waveguide port instead of a plane wave:
You use PEC and PMC boundaries conditions, this choice is due to have the electric and magnetic field orthogonal so it's a good choice when you use a waveguide port.
But in the case of the plane wave E and H are already orthogonal so you don't need to use this boundaries conditions. For plane wave you must use periodic conditions to have an infinite structure.
2/ If you use a plane wave like this you don't have any reference of the incident field and reflected. There is a macro to simulate phase reflexion of a FSS / EBG / HIS etc...
If you use a waveguide port with PEC and PMC conditions and you put the reference's port to the surface of your structure, CST will simulate S-Parameter and you will have magnitude and phase reflexion of your structure.
Hope you will understand and help you,
Regards
Piboo