Figure 4
From: Dual-channel near-field control by polarizations using isotropic and inhomogeneous metasurface
The process of designing the metasurface.
(a) Dispersion map of the unit cell shown in the inset of Fig. 4(b). (b) The relationship of the surface impedance and the patch width a. The period of the unit is L = 3 mm. In the Eigen-mode simulations of the unit, periodic boundaries are used on four sides and an electric wall is placed on the top of the unit. (c) The geometric structure of the metasurface. The diameter of the modulated area is 150 mm and the size of the substrate is 160 mm*160 mm. In the full-wave simulations, the cylindrical source and directional source are used individually.
