Miniaturized dual-band circularly polarized antenna

A miniaturized dual-band circularly polarized antenna provided by the present invention comprises a dielectric substrate and a covering layer, the covering layer is located at the top of the dielectric substrate, a radiating surface is printed at the top of the dielectric substrate, a ground plane is printed at the bottom of the dielectric substrate, and the radiating surface is located at the top of the dielectric substrate. The radiating surface and the ground plane are communicated through a short-circuit probe and a coaxial feed point center probe, the radiating surface is provided with a cross-shaped rectangular groove group and an L-shaped rectangular groove group, the radiating surface is of a central symmetry structure, and the ground plane is provided with a T-shaped ground plane rectangular groove group. The miniaturized dual-band circularly polarized antenna provided by the invention has the advantages of simple structure, small size, low profile, low coupling, circular polarization, dual bands and