Planar array microwave antenna for dual-beam traffic information detection radar

Abstract

The invention discloses a planar array microwave antenna for a dual-beam traffic information detection radar; the antenna is formed by connecting one group of 20 serial planar antenna units with another group of 20 serial planar antenna units in parallel, and a central side-feed form is used for feeding to an antenna array; the planar array microwave antenna for dual-beam traffic information detection radar has the advantages that a pair of antennas can produce two beam main lobes between which an included angle, namely the included angle between the beam main lobes of the dual-beam antenna is formed, and the included angle completely meets the demands of the dual-beam traffic information detection radar; the central side-feed form is more favorable for the integration of a radar transmitting-receiving assembly and the antenna; and furthermore, the wiring length of the radar transmitting-receiving assembly can be shortened to reduce the microwave radiation loss and reduce the radar cross section area.

Description

technical field [0001] The invention relates to a planar array microwave antenna suitable for dual-beam detection radar, in particular to a planar array microwave antenna for traffic signal detection radar, which belongs to the field of traffic information collection in intelligent traffic systems Background technique [0002] Real-time traffic information is one of the most basic information sources of the intelligent transportation system (ITS). Only by accurately grasping the real-time traffic information of each road can we effectively implement and play such functions as traffic guidance, traffic light intelligent control, speeding capture and security card. Therefore, the real-time detection technology of traffic information is one of the most core and basic technologies in ITS technology. [0003] The research on traffic information collection technology has been carried out for many years. At present, a variety of traffic information collection technologies have bee...

AI Technical Summary

Problems solved by technology

This kind of antenna is suitable for single-beam microwave traffic information collection radar, that is to say, the radar only emits a single microwave beam. Single-beam microwave radar (side installation) has many shortcomings, mainly reflected in: there is occlusion and interference between vehicles, Unable to measure real-time vehicle speed, unable to accurately detect vehicle length, etc.

If a single radar emits 2 beams with a certain included angle, the above-mentioned problems can be overcome basically, so that the original planar array antenna suitable for single-beam microwave radars cannot be adopted. For this reason, the present invention proposes a dual-beam antenna Planar Array Antenna for Microwave Radar

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