Generation of Dual-Polarized Dual-Mode OAM Radio Beams Through Transmit-Array Lens

A dual-polarized transmit-array lens (TAL) is presented for the generation of dual-mode convergent orbital angular momentum (OAM) beams in C-band. The proposed TAL consists of dual-polarized metamaterial unit cells, which are composed of four stacked patches coupled by cross aperture, to complete the phase correction for both polarizations and stimulate the dual-mode convergent OAM beams. The simulated results verify the effectiveness of the proposed design.