A vehicle glass antenna

Abstract

The invention discloses a vehicle glass antenna, which comprises a vehicle glass, an antenna device and a displacement device. The antenna device is arranged on the inner side of the vehicle glass through the displacement device, and at least A set of metamaterial devices. The present invention can reduce the influence of the multi-medium layer on the antenna beam through the configuration of the metamaterial device, and realize stable beam forming. By utilizing the control characteristics of the metamaterial device, the radiation of stray signals into the space can be well suppressed. Reducing the side lobe and back lobe, enhancing the radiation main lobe gain of the antenna device, and loading the metamaterial device can make the antenna have a guiding function. Through the setting of the displacement device, it is used to regulate the position of the antenna device relative to the metamaterial device, so as to facilitate the control of the radiation main lobe beam direction and facilitate the adjustment of the antenna pointing.

Description

technical field [0001] The invention relates to the technical field of intelligent traffic equipment, in particular to a vehicle glass antenna. Background technique [0002] Most of the existing car antennas are whip antennas, shark fin antennas, and some installation antennas. Various antennas are always integrated together, and there are problems such as low isolation of each port and mutual coupling and interference of signals. The integration of 5G antennas, vehicle networking V2X antennas, positioning antennas GNSS / Beidou antennas, ETC antennas, etc. with automotive glass has become a trend in vehicle antenna design. The antenna is installed in different positions of the glass according to the needs, and the communication equipment can be connected nearby to reduce the loss of the feeder. [0003] ETC (Electronic Toll Collection) is a fully automatic electronic toll collection system, which is one of the service functions of the intelligent transportation system, espec...

AI Technical Summary

Problems solved by technology

[0005] (1) When the antenna is designed on the inner glass, the loss of the signal after penetrating the glass structure is relatively large, and the gain becomes low

[0006] (2) When designing the antenna inside the laminated glass or on the surface of the glass, due to the large difference in the dielectric constant of various materials such as glass, antenna substrate, and interlayer PVB, and the different loss tangent angles, they have a scattering effect on waves, making the antenna radiation direction The graph is very non-standard, and it is difficult to meet the lobe angle requirements such as ETC requirements

[0007] (3) Due to the different inclination angles of the front windshields of different models, the directivity of the antenna radiation pattern cannot be adjusted specifically

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