Planar array microwave antenna for traffic signal detection radar

Abstract

The invention discloses a planar array microwave antenna for a traffic signal detection radar. The planar array microwave antenna is formed in such a way that a group of 12 plane antenna units are connected in series and then connected in parallel with an other group of 12 series-connected plane antenna units, wherein the two groups of series-connected and parallel-connected planar array antennae are fed in an end feed way, and each planar array antenna is fed in a notch way. The invention completely meets the requirements on double-beam microwave traffic information acquisition radar, is more beneficial to the arrangement of the integral structure of the radar due to the end feed way, can reduce the wiring length of a radar receiving and transmitting assembly and is beneficial to reducing the loss of microwave radiation and the cross sectional area of the radar.

Description

technical field [0001] The invention relates to the field of traffic information collection in intelligent traffic systems, in particular to a planar array microwave antenna for traffic signal detection radar. 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 been applied in practice. The traffic information collected by these technologies mainly in...

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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