Novel Multi-frequency Vehicle Antenna

A novel multi-frequency vehicle antenna is proposed, which can work at 0.433 GHz, 2.83 GHz, 5 GHz by resonance simultaneously. It makes use of the vehicle's metal shell for signal radiation and collection. At the same time, its performance can be immune to the vehicle body structure. This antenna consists of Printed Circuit Board (PCB) excitation structure, matching circuit and metal shell of the vehicle. The trapezoidal PCB excitation structure has a hole in the middle, which cooperates with the matching circuit to excite the resonance of the required frequencies. The metal layers of the PCB connect the metal shell of the vehicle to achieve radiation, and they also connect transceiver through matching circuit. The excitation structure can be mounted on any place on the metal shell of the vehicle especially on the top. This vehicle antenna has the advantages of convenient installation and wide application range, and has the potential to replace some existing vehicle communication antennas.