Vehicle-mounted antenna, preparation method thereof and vehicle-mounted electronic device

The invention provides a vehicle-mounted antenna, a preparation method of the vehicle-mounted antenna and a vehicle-mounted electronic device, belongs to the technical field of vehicle-mounted communication, and can solve the problem that an existing vehicle-mounted antenna is poor in radiation performance. The vehicle-mounted antenna comprises a first substrate, a second substrate, a feed wiring layer and a radiation coupling layer, wherein the first substrate and the second substrate are oppositely arranged; the feed wiring layer is positioned on one side, close to the second substrate, of the first substrate; the radiation coupling layer is positioned on one side, close to the first substrate, of the second substrate; wherein the feed routing layer comprises at least one feed routing; the radiation coupling layer is provided with an opening; the orthographic projection of the at least one feed wire on the first substrate is at least partially overlapped with the orthographic projection of the opening on th