Figure 3
From: Dual-channel near-field control by polarizations using isotropic and inhomogeneous metasurface
Process of superimposing the impedance modulation at 15 GHz.
The original point locates at the left end of the circular area. (a) The impedance pattern for cylindrical carrier waves with Zs_c = j177.1(1 + 0.2cos(1.1k0rs + k0rf)), where 
; 
. (b) The impedance pattern for directional carrier waves with Zs_d = j177.1(1 + 0.2cos(1.1k0y + k0rf)). (c) The hybrid impedance pattern for the dual carrier waves with Zs_h = (Zs_c + Zs_d)/2.
