Vehicle-mounted 5G antenna system

Abstract

The invention relates to a vehicle-mounted 5G antenna system. The vehicle-mounted 5G antenna system comprises an antenna box fixed to a car roof, the antenna box comprises a shark fin shell and a TBOXshell, the shark fin shell is fixed to the exterior of the car roof, the TBOX shell is fixed to the interior of the car roof, and the shark fin shell and the TBOX shell communicate through a car roofopening; a PCB is arranged in the TBOX shell, a shark fin antenna system located outside the car body and an onboard antenna system located in the car body are arranged on the PCB, and the shark finantenna system is arranged in the shark fin shell through the car roof opening; and the shark fin antenna system comprises an independent 5G antenna, and the onboard antenna system comprises a 4G full-band antenna. According to the shark fin, the frequency bands of 2G, 3G, 4G and 5G are divided into two antenna systems, the antenna independently covering the 5G frequency band is arranged in the shark fin shell to reduce the size of the shark fin shell, the 5G frequency band has better isolation in a small space, and therefore the problem of mutual interference of signals is solved.

Description

technical field [0001] The present invention relates to the technical field of automotive electronics, in particular to a vehicle-mounted 5G antenna system. Background technique [0002] With the continuous development of communication technology, the speed of the network continues to increase, and the functions of the vehicle antenna system are becoming more and more abundant. At present, the car shark fin is installed on the outside of the car body, usually with a built-in 4G LTE communication antenna, GNSS global navigation satellite antenna, SDARS satellite digital audio broadcast service antenna, etc., and the shark fin antenna is connected to the T- box receiving processor. [0003] In the prior art, the Chinese patent with the authorized announcement number CN208368727U and the authorized announcement date of 2019.01.11 discloses a shark fin 5G multi-antenna system. The antenna system is set on the PCB board. The disadvantage of this solution is that when the shark...

AI Technical Summary

Problems solved by technology

However, the space inside the shark fin is limited. If the 5G antenna and 4G antenna are installed inside the shark fin, the volume of the shark fin needs to be increased. The integration of 5G antenna and 4G antenna will increase the manufacturing cost. At the same time, the small space inside the shark fin will also cause poor isolation.

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