The invention belongs to the technical field of antennas, particularly provides a full-band GNSS shark fin antenna, and aims to solve the problem that the receiving uniformity and stability of
satellite signals are affected due to
distortion of a directional diagram of an existing shark fin antenna. Therefore, the full-band GNSS shark fin antenna comprises a bottom plate, a shell, a circuit board, a
radiation antenna, an annular director and an FAKRA connector, the shell is connected with the bottom plate, a containing cavity is formed between the shell and the bottom plate, the circuit board, the
radiation antenna and the annular director are all located in the containing cavity, the circuit board is installed on the bottom plate, the
radiation antenna is installed on the circuit board, and the FAKRA connector is connected with the shell. The annular director is located on the side, away from the circuit board, of the radiating antenna, the center line of the annular director coincides with the center line of the radiating antenna, and a first gap is formed between the annular director and the radiating antenna. According to the GNSS shark fin antenna, the directional diagram can be optimized, and the problem that the directional diagram is distorted when the antenna is installed on an automobile large-size
metal plate is solved.