Full-band vehicle-mounted antenna

The invention discloses a full-band vehicle-mounted antenna, which comprises an antenna support. The antenna support is provided with an antenna bottom board; the antenna bottom board is provided with an antenna radiator; the antenna radiator comprises an auxiliary antenna, a main antenna, an isolator and an antenna PCB; the antenna PCB is arranged on the antenna bottom board; the auxiliary antenna and the main antenna are arranged on the antenna bottom board; the isolator is arranged on the antenna bottom board; the antenna PCB is connected with a first coaxial line and a second coaxial line; the antenna support is provided with an antenna cover; and the antenna cover covers the antenna PCB. Broadband features of the antenna are realized, and the isolation degree between the main antenna and the auxiliary antenna is improved.