Planar array microwave antenna for dual-beam traffic information detection radar
A planar array antenna and planar array technology, applied in the direction of antenna, electrical components, radiation element structure, etc., can solve the problems of inability to measure real-time vehicle speed, vehicle occlusion and interference, and inaccurate detection of vehicle length, etc. Cross-sectional area, reduced wiring length, and reduced microwave radiation loss
Inactive Publication Date: 2011-08-17
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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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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[0016] The present invention will be further described below in conjunction with the accompanying drawings to clarify the substantive features and remarkable progress of the present invention, but the present invention is by no means limited to the embodiments.
[0017] Such as Figure 1-Figure 3 As shown, the present invention provides a planar array microwave antenna for traffic signal detection radar. The provided planar array microwave antenna can generate dual beams with required angles. Starting from the actual needs of traffic information collection, the included angle is selected It is more appropriate to be about 10 degrees. When the designed radar only needs to detect no more than 4 lanes at the same time, the included angle can be appropriately wider; when more than 8 lanes need to be detected, the included angle should be appropriately narrowed. is determined.
[0018] The antenna adopts a dielectric substrate material with a dielectric constant of about 2.2 and a...
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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...
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IPC IPC(8): H01Q1/38H01Q13/08H01Q25/00
CPCH01Q13/206
Inventor 余稳张宙元方菲菲许鹏拓钱蓉孙晓玮
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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