GPS antenna and vehicle-mounted antenna

The invention provides a GPS antenna and a vehicle-mounted antenna, and the GPS antenna comprises a GPS antenna body. The metamaterial structure is located on the main radiation side of the GPS antenna body; the metamaterial structure comprises a dielectric substrate and a metal structure covering layer located on the surface of the dielectric substrate. Aiming at the problem that the gain of a GPS antenna in an existing vehicle-mounted antenna system is insufficient, the metamaterial structure is designed and is arranged on the main radiation side of the GPS antenna, so that the localizationdegree of electromagnetic energy is improved within the working frequency range of the GPS antenna, and the radiation gain of the GPS antenna in the zenith direction is improved. Compared with other structures, the Archimedes spiral metamaterial structure and the multi-radius concentric circle structure can significantly improve the maximum gain of radiation of the GPS antenna in the zenith direction without changing the