Broadband Linear to Circular Polarizer Based on Multilayer Frequency-Selective Surface

Figure 2

The equivalent circuit models of the polarizer. (a) The split square ring unit cell in the direction for polarization. (b) The split square ring unit cell in the direction for polarization. (c) The square patches unit cell in the direction for polarization. (d) The square patches unit cell in the direction for polarization.

(a)

(b)

(c)

(d)