Figure 7
From: Triple-wide-band Ultra-thin Metasheet for transmission polarization conversion

Surface current distribution of the proposed multi-band metasheet at (a) f1, t = 0, (b) f1, t = T/4 (c) f1, t = T/2 (d) f1, 3 T/4 (e) f2, t = 0 (f) f2, t = T/4 (g) f2, t = T/2 (h) f2, 3 T/4 (i) f3, t = 0 (j)f3, t = T/4 (k) f3, t = T/2 (l) f3, 3 T/4.