Figure 4
From: Design of Phase Gradient Coding Metasurfaces for Broadband Wave Modulating
The simulation of far field RCS under normal incidence at 10 GHz in the YOZ plane. Figure 4a–c show the radiation angles θ of different optimal layouts versus their expected angles. The white dash lines represent the expectancy for (a) 8 × 8 arrays; (b) 20 × 20 arrays; (c) 40 × 40 arrays. Figure 4d–f describe the far field RCS of the optimized arrays in dB scale: (d) 8 × 8 arrays; (e) 20 × 20 arrays; (f) 40 × 40 arrays. The directions of the max radiation energy are θ = 53°, 57° and 59°, respectively. Their directivities are 31.51 dBi, 203.93 dBi and 715.53 dBi. The polar plots in Fig. 4d–f represent the far field RCS in YOZ plane.
