Fig. 4: Experimental demonstration of illusions with FISP.
From: Flexible intelligent microwave metasurface with shape-guided adaptive programming

Near-field distribution of magnetic field (Hx) in (a) flat illusion, (b) oblique illusion, and (c) triangular illusion with a tilt angle of 15° and varying RM shapes. Corresponding polar plots of the far-field patterns of (d) plane illusion, (e) oblique illusion, and (f) triangular illusion. All the measurements are taken at normal incidence and 3.1 GHz.