Double-layer Metal Wire Based Artificial Electromagnetic Surface and its Application to Bessel Beam Microwave Lens
关键词:
Metasurface, microwave lens, P-B phase, phase discontinuity摘要
In this paper, a transmissive periodic metasurface based on double-layer metal wire structure is designed by combining gradient phase theory with Pancharatnam-Berry (P-B) phase theory to control scattering phase of electromagnetic wave. The proposed artificial electromagnetic medium lens can improve the cross-polarized wave conversion efficiency of the phase discontinuous metasurface and ensure the thickness of the lens is ultrathin relative to the working wavelength.
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