Multi-beam integrated waveguide antenna use for on-board anti-collision radar

An integrated waveguide and anti-collision radar technology, which is applied in the direction of antenna, antenna grounding switch structure connection, radiation element structure, etc., can solve the difficulty of anti-collision radar target algorithm, complex anti-collision radar system hardware, and high price of anti-collision radar and other problems, to achieve the effect of easy low side lobe control, light weight and simple structure

Active Publication Date: 2016-03-23
DALIAN ROILAND SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems that the anti-collision radar of the existing phased array system is expensive, the algorithm of the anti-collision radar is difficult to extract targets in complex environments, and the hardware of the anti-collision radar system is complicated, the invention proposes a multi-beam integrated waveguide antenna

Method used

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  • Multi-beam integrated waveguide antenna use for on-board anti-collision radar
  • Multi-beam integrated waveguide antenna use for on-board anti-collision radar

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Embodiment 1

[0036] A multi-beam integrated waveguide antenna for vehicle-mounted anti-collision radar, the substrate integrated waveguide antenna array of the first layer, (2n-2) layers of striplines, and the bottom microwave circuit are integrated; the microwave circuit is mainly composed of X One-point (2n-1) unequal power dividers, (2n-1) one-point X unequal power dividers, where n+1 is the number of beams formed, n≥2, X is the number of array antennas number of units.

[0037] Further, the X feed points of the substrate integrated waveguide antenna array on the first layer are connected to the main path of a (2n-1) unequal power divider of the microwave circuit on the bottom layer through through holes;

[0038] The first branch of each (2n-1) unequal power divider is connected to the stripline of the second layer through the via hole, and the stripline of the second layer is connected to the first one of the bottom layer through the via hole. Divide X branches of X unequal power div...

Embodiment 2

[0046] A three-beam integrated waveguide antenna for vehicle-mounted anti-collision radar, which consists of a substrate integrated waveguide antenna array 1 on the first layer, a stripline 2 on the second layer, a stripline 3 on the third layer, and an integrated waveguide antenna array on the fourth layer. The microwave circuit 4 is integrated, and the microwave circuit 4 is composed of four one-to-three unequal power dividers 7 , three one-to-four unequal power dividers 6 , four equal-phase microstrip lines and a microwave switch network 5 .

[0047] Further, the four feeding points of the substrate integrated waveguide antenna array 1 on the first layer are connected to the main path of the one-to-three unequal power divider 7 of the microwave circuit 4 on the fourth layer through through holes;

[0048] The first branch of each one-to-three unequal power divider 7 is connected to the stripline 2 of the second layer through a via hole, and is connected to the first one-to-f...

Embodiment 3

[0055] It has the same technical solution as that of Embodiment 2, and more specifically, the substrate-integrated waveguide antenna array is loaded with load matching resistors. Adjacent antennas are combined by a power splitter first, and then power distribution and phase weighting are performed. The microwave switch network is a single-pole three-throw switch network. The two-layer stripline structure is symmetrical, and the phase shift is an arithmetic sequence, one is positive and the other is negative. The phases of the microstrip lines between the one-to-three unequal power divider and the one-to-four unequal power divider are equal, and the resistance of the load matching resistor is 100Ω.

[0056] The multi-beam integrated waveguide antenna of this embodiment can realize spatial filtering at the front end of the radio frequency, can effectively suppress clutter signals, and only needs to switch the microwave switch network, and can realize the judgment of targets in ...

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Abstract

The present invention provides a multi-beam integrated waveguide antenna, belongs to the field of radar antennas, and aims to solve the problems that an anti-collision radar in an existing phased array system is expensive, has high difficulty in extracting a target algorithm in a complex environment, is complex in system hardware and the like. The multi-beam integrated waveguide antenna has the technical key points that the antenna is formed by integrating a substrate integrated waveguide antenna array at a first layer, (2n-2) layers of strip-shaped lines and a microwave circuit at a bottom layer; and the microwave circuit mainly comprises X one-in-(2n-1) unequal power dividers, and (2n-1) one-in-X unequal power dividers, wherein n+1 is the number of formed beams, n is greater than or equal to 2, and X is the number of units of an array antenna. The multi-beam integrated waveguide antenna has the effects that array amplitude and phase distribution are implemented by means of the power dividers and the shift-phase micro-strip lines so as to implement multiple beams, and on the basis, the number of the beams can be extended.

Description

technical field [0001] The invention belongs to the field of radar antennas, in particular to a multi-beam integrated waveguide antenna for vehicle-mounted anti-collision radars. Background technique [0002] In recent years, motor vehicles have become the main means of transportation in people's lives. However, with the continuous growth of the number of vehicles, especially the rapid growth of the number of private cars year by year, it has brought about increasingly serious traffic problems such as urban traffic congestion, frequent traffic accidents, and deterioration of the traffic environment. In this context, the idea of ​​combining vehicles and roads to solve traffic problems in a systematic way arises spontaneously, which is the Intelligent Transportation System (ITS). It is a very important part of the ITS safety plan to develop a high-performance automotive anti-collision radar system for actively assisting drivers in safe driving. As the radar antenna is an imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q13/08H01Q23/00
CPCH01Q1/38H01Q1/50H01Q13/08H01Q23/00
Inventor 田雨农陈军周秀田史文虎
Owner DALIAN ROILAND SCI & TECH CO LTD
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