Vehicle-mounted millimeter wave radar antenna, radar and vehicle

Abstract

The invention discloses a vehicle-mounted millimeter-wave radar antenna, a radar and a vehicle, and the vehicle-mounted millimeter-wave radar antenna comprises a 1-to-n power dividing feed network, and n is a natural number greater than 2; n single-column antenna arrays, each single-column antenna array is correspondingly connected with one output end of the power division feed network, each single-column antenna array is formed by connecting k antenna radiation units in series through a microstrip line, and k is a natural number greater than 3; and the upper bottom surface of the trapezoidal reflection matching section is connected with the antenna radiation unit at the tail end of the single-row antenna array, and the lower bottom surface of the trapezoidal reflection matching section is connected with the microstrip line. By adding an antenna design structure of a trapezoidal reflection matching section in front of the last antenna radiation unit, the sidelobe level of a directional diagram can be integrally reduced by about 2dB, the antenna directional diagram can be effectively optimized, the signal-to-noise ratio of a radar system can be improved, and the anti-interference capability of a millimeter wave radar system can be improved.

Description

technical field [0001] The invention relates to the technical field of vehicle antennas, in particular to a vehicle millimeter wave radar antenna, a radar and a vehicle. Background technique [0002] With the increase of my country's car ownership year by year and the continuous improvement of automotive active safety technology, in recent years, the intelligent assisted driving system of automobiles has almost become the standard configuration system of new models. Because of its real-time, accurate, and efficient characteristics, the intelligent assisted driving system of automobiles has greatly improved the driver's driving experience, and has become one of the configuration systems that the new generation of automobile consumers pay great attention to. [0003] At present, the intelligent assisted driving system sensor solutions commonly used in the industry to equip cars with active safety driving technology include: a pure vision solution integrating multiple cameras, ...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome above-mentioned technical deficiency, propose a kind of vehicle-mounted millimeter-wave radar antenna, radar and vehicle, solve the technical problem that the signal gain of millimeter-wave radar antenna in the prior art is not high, sidelobe level is higher

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