A vehicle-mounted multi-frequency integrated antenna device

Abstract

The invention relates to a vehicle-mounted multi-frequency integrated antenna device, including: 350MHz cluster vehicle antenna, 800MHz cluster vehicle antenna, 3G public mobile communication antenna, FM antenna, Beidou dual-mode antenna, GPS dual-mode antenna, 3G broadband antenna bracket, Bottom plate, shell, feeder, short circuit. The beneficial effect of the present invention is that: the electrical dimensions of the 350MHz cluster vehicle antenna and the 800MHz cluster vehicle antenna are relatively small, the antenna device combines the advantages of the IFA antenna structure, and an inverted F-shaped antenna is connected to the receiving end of the antenna device. The short-circuit structure, the current using the antenna device changes, and the size is reduced. The 350MHz cluster vehicle antenna and the 800MHz cluster vehicle antenna are a dual-frequency structure. By improving the helical antenna, the top of the antenna device is changed to a slow-wave structure, so that the resonant current changes for the second time, resulting in dual-frequency the nature of the work.

Description

technical field [0001] The invention relates to an antenna device, in particular to a vehicle-mounted multi-frequency integrated antenna device. Background technique [0002] The car antenna is a kind of antenna installed on the car. The car antenna reception is to receive the signal transmitted by the sending device. As long as it is within the effective coverage area of ​​the signal, it can be effectively received, which is a true seamless link. Vehicle antenna refers to the mobile communication antenna designed to be installed on the vehicle, the most common is the suction cup antenna. Because the suction cup antenna is easy to install and place, the suction cup antenna is often used instead of the base antenna in some simple occasions. There are antennas in the form of shortened, quarter-wave, middle-loaded, five-eighths, and double-half wavelengths in the vehicle antenna structure. Theoretically, their efficiency increases sequentially. The antennas in the same working...

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned disclosed antenna and integrated communication system still have the following defects: (1) the performance of the cluster antenna in the antenna does not meet the technical requirements, and the communication distance of the cluster vehicle using this antenna is relatively short; (2) due to the transmission of the cluster vehicle The power is relatively large, and the area of ​​the contact point of the cluster antenna pole is relatively small, which is easy to generate arc amplification, making the antenna pole easy to ablate; (3) the cluster antenna is a single-frequency antenna, which cannot meet the application requirements of 800MHz cluster vehicle platform

Images