Research Article
Controlling Conical Beam Carrying Orbital Angular Momentum with Transmissive Metasurface
Figure 3
(a) Schematic of the feed antenna. The middle metallic pattern has a slot cut in it with a length of Ls = 12.2 mm and width of = 0.65 mm. (b) Continuous phase profile of the primary feed antenna illuminating the metasurface (left panel), and phase distribution used to compensate the out-of-phase incidence (right panel). (c) Transmission phase function of the metasurface. (d) 3D simulated far-field radiation pattern. (e) 2D simulated results in the E and H planes for OAM l = 1 at δr = 0° (left panels) and δr = 15° (right panels).
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