Single-feed circularly polarized antenna

A macroscopically anisotropic capacitive electromagnetic metasurface is formed by a plurality of tightly coupled hexagonal metal patch arrays, so that electromagnetic waves propagated on the surface of the metasurface have different phase velocities in different directions to construct an orthogonal electromagnetic field required by circularly polarized radiation and a phase difference of the orthogonal electromagnetic field; the multiple layers of same capacitive electromagnetic metasurface are horizontally stacked on the metal reflecting plate, the multiple layers of tightly-coupled capacitive electromagnetic metasurface provide additional interlayer capacitance, the resonant frequency of the antenna is reduced, and the miniaturization design of the antenna is achieved. While the low profile and miniaturization are maintained, the circularly polarized antenna is realized through the resonators with simple structures and a single simple feed structure. The problems of complex design, difficult matching, larg