Vehicle-mounted radar antenna and vehicle

Abstract

The invention discloses a vehicle-mounted radar antenna and a vehicle. The vehicle-mounted radar antenna comprises a dielectric substrate, a radiation layer and a grounding plate, wherein the radiation layer and the grounding plate are arranged on two opposite side faces of the dielectric substrate. The beam width of a radiation beam emitted by the radiation layer along the pitching plane is smaller than that of a radiation beam emitted by the radiation layer along the azimuth plane; the radiation layer comprises a first radiation assembly and a second radiation assembly, the first radiation assembly is connected with the second radiation assembly, and the first radiation assembly and the second radiation assembly are arranged adjacently; and the radiation wave emitted by the first radiation assembly and the radiation wave emitted by the second radiation assembly form a fan-shaped wave beam on the azimuth plane. Through the above technical scheme, reasonable wave beam forming can be realized, the transverse coverage range of the vehicle-mounted radar antenna is increased, the vehicle-mounted radar antenna has a good gain effect, and the vehicle-mounted radar antenna is simple in structure, small in size and convenient for integration of a sensor.

Description

technical field [0001] The present application relates to the technical field of vehicle radar sensors, in particular to a vehicle radar antenna and a vehicle. Background technique [0002] Automotive microwave / millimeter-wave radar sensors are one of the core components of smart cars. For example, 77GHZ millimeter-wave radar is an essential key component of smart cars. Sensors for speed, azimuth and other information. [0003] The existing automotive radar antennas have insufficient bandwidth and lateral coverage. There are too many automotive radar antenna units and a single feed network, making it difficult to achieve reasonable beamforming. In addition, the existing automotive radar antennas are large in size and the feed network is relatively large. More complex and not conducive to product integration. [0004] Therefore, there is an urgent need for a design scheme of a vehicle-mounted radar antenna, which is used to solve the problems in the prior art such as too ma...

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Problems solved by technology

[0005] In order to solve the problems of the prior art, the embodiment of the present application provides a vehicle-mounted radar antenna and a technical solution for the vehicle, which is used to solve the problem of too many radar antenna units, a single feed network, insufficient coverage of the radar antenna, and a large volume in the prior art. It is not conducive to product integration and other issues. The technical solution is as follows:

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