While going through the FSS/Split ring resonator I have following doubts:
1) the (1) emw.k0sin(theta)cos(phi) (2) emw.k0sin(theta)sin(phi) (3) emw.k0*cos(phi) are put in variables. Can we write them in parameters?
2)Difference between domain backed and PEC slit type. What actually their functions are and how would they affect the simulation?
3) While defining the properties of port, input quantity is given as electric field. What does expression exp(-ik_xx)exp(-ik_y*y) j V/m represents in x component as shown in picture attached? What is difference if i put in y component? 4) how the propagation constant = abs(k_z)? 5) Since both plasmonic wire and FSS are periodic structure then why port periodicity is considered in former one not in later one?