Figure 2
From: Field-programmable beam reconfiguring based on digitally-controlled coding metasurface
Properties of the binary unit.
(A) The detailed structure of the binary unit which consists of three layers. Here, S = 1 mm, W = 4.3 mm, the height between the top and middle layers is 1.6 mm, while the height between the middle and bottom layers is 0.2 mm. The periodicity of the unit is 7 mm and the size of the outer copper square is 6 mm. All line widths are 0.2 mm. (B,C) The effective circuit models of the pin diode at the state “on” and “off”, respectively. (D,E) The scattered electric-field patterns of the binary unit at the states “on” and “off”, respectively. (F) The reflection amplitudes of the binary unit. (G) The reflection phases of the binary unit.
