A dual-exit vehicle-mounted antenna

Abstract

The invention provides a dual-outlet vehicle-borne antenna which comprises an antenna seat and an antenna body which is connected antenna seat. The antenna body comprises an upper section antenna rod at an upper part and a lower section antenna rod at a lower part. The upper section antenna rod and the lower section antenna rod are connected through a thread. The upper section antenna rod comprises a part of the coupling section of a radiator 1 with the frequency range of 225MHz to 512MHz and a radiator 2 with the frequency range of 30MHz to 88MHz. The lower section antenna rod comprises the other part of the coupling section of the radiator 2 and the radiator 2 with the frequency range of 30MHz to 88MHz. The radiator 1 goes through the radiator 2 through a coaxial cable. The distance between the radiator 1 and the radiator 2 is 300mm. The dual-outlet vehicle-borne antenna can be used for the frequency ranges of 30MHz to 88MHz and 225MHz to 512MHz, has the characteristics of wide antenna bandwidth, high isolation, and good conversation quality, and is suitable for a variety of ultrashort wave radio stations and high-speed data stations as vehicle use.

Description

technical field [0001] The invention relates to an antenna, which belongs to the technical field of radio communication, in particular to a dual-exit vehicle-mounted antenna. Background technique [0002] At present, various types of radio stations are widely used in communication vehicles. They are huge in number, old and new, and have different functions. With the rapid development of communication systems, many antennas can be erected under the condition that the working area is not limited. However, in the vehicle field, the area is limited, and the increase in the number of antennas will inevitably lead to a very close distance between adjacent antennas in the working area. The coupling between them is very close, which will inevitably lead to greater interference between adjacent working devices, so an antenna that can work in the frequency ranges of 30MHz-88MHz and 225MHz-512MHz is urgently needed to meet the use of radio stations. Contents of the invention [0003...

AI Technical Summary

Problems solved by technology

With the rapid development of communication systems, many antennas can be erected under the condition that the working area is not limited. However, in the vehicle field, the area is limited, and the increase in the number of antennas will inevitably lead to a very close distance between adjacent antennas in the working area. The coupling between them is very close, which will inevitably lead to greater interference between adjacent working equipment, so there is an urgent need for an antenna that can work in the frequency ranges of 30MHz-88MHz and 225MHz-512MHz at the same time to meet the needs of radio stations.

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