Dual-polarized radiation unit and luneberg lens antenna

The invention discloses a dual-polarized radiation unit and a luneberg lens antenna, and the dual-polarized radiation unit comprises a radiator and a feed balun. The radiator comprises a first dielectric plate, a dual-polarized full-wave electric dipole arranged on the upper surface of the first dielectric plate, and an edge strip line coupler and a central strip line coupler which are arranged on the lower surface of the first dielectric plate; the dual-polarized full-wave electric dipole comprises four radiation oscillators which are arranged in a central symmetry manner, a first hollow part is arranged in each radiation oscillator, and the radiator further comprises an annular coupler which is arranged along the edge of the first hollow part. Under various electromagnetic coupling mechanisms of the dual-polarized full-wave electric dipole, the edge strip line coupler, the center strip line coupler and the annular coupler, the dual-polarized full-wave electric dipole antenna has the advantages of being low