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Horizontally polarized antenna and radar

A horizontal polarization, antenna technology, applied to antennas, antenna parts, antennas suitable for movable objects, etc., can solve problems such as high requirements, high difficulty, and narrow antenna bandwidth.

Pending Publication Date: 2021-04-09
ZONGMU TECH SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the traditional microstrip antenna array structure can provide high gain and low sidelobe to meet the requirements, its antenna bandwidth is generally narrow, and based on the existing processing methods, both ends of the antenna element away from the feeder line will have A certain rounded corner corresponds to the relative EA value, which will have a certain impact on the resonant frequency of the antenna. In order to ensure a certain bandwidth, the existing antenna has high requirements and difficulty in processing, so Lead to high production costs and low production efficiency

Method used

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  • Horizontally polarized antenna and radar
  • Horizontally polarized antenna and radar
  • Horizontally polarized antenna and radar

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specific Embodiment 1

[0030] Such as figure 1 As shown, this specific embodiment discloses a horizontally polarized antenna, including a single line array, a single line array includes a feeder 1 and a plurality of array elements 2, and the plurality of array elements 2 are distributed on both sides of the feeder 1 , and the array elements located on both sides of the feeder are crossed. Wherein, the array element 2 includes a trapezoidal structure 21, the trapezoidal structure 21 includes a first base 211 and a second base 212 in parallel, the length of the first base 211 is shorter than the second base 212, and the first base 211 is directly connected to In the feeder 1, the trapezoidal structure 21 in this embodiment is an isosceles trapezoidal junction, the angle between the side waist of the trapezoidal structure 21 and the second base 212 is less than 90°, and the side waist and the second bottom in the trapezoidal structure The included angle of the edge is in the range of [60°, 85°].

[0...

specific Embodiment 2

[0037] Such as figure 2 , 3As shown, the horizontally polarized antenna in this specific embodiment has been further improved. Compared with the specific embodiment 1, the array elements in the antenna in this embodiment have added a first rectangular structure 22 and a second rectangular structure 23 . Specifically, the trapezoidal structure 21 is connected to the feeder 1 through a first rectangular structure 22, the first rectangular structure 22 includes a third base 221 and a fourth base 222 arranged in parallel, the third base of the first rectangular structure 22 221 is connected to the feeder 1, the fourth base 222 of the first rectangular structure 22 is connected to the first base 211 of the trapezoidal structure 21, and the fourth base 222 of the first rectangular structure 22 The length is the same as the length of the first base 211 of the trapezoidal structure 21 , that is, the distance between two parallel sides of the first rectangular structure 22 is the sa...

specific Embodiment 3

[0047] Such as Figure 4 As shown, the horizontally polarized antenna disclosed in this specific embodiment has been further improved on the basis of specific embodiment 2. Specifically, in this embodiment, the number of array elements 2 in the antenna is multiple, and multiple The array element 2 is distributed on both sides of the feeder line 1, and the width of the array element 2 gradually decreases from the middle of the feeder line 1 to both sides. The width of the array element 2 is in the parallel direction of the feeder line. The spacing between them can also be said that along the axis of the feeder, the array elements gradually narrow from the middle to both sides.

[0048] The horizontally polarized antenna in this specific embodiment not only achieves a wider bandwidth, but also has low processing cost. In addition, due to the change of the array element in the width direction, the amplitude of the current fed into the array element can also be adjusted, thereby r...

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Abstract

The invention provides a horizontally polarized antenna and a radar, the horizontally polarized antenna comprises at least one single linear array, the single linear array comprises a feeder line and at least one array element, the array element comprises a trapezoidal structure, the trapezoidal structure comprises a first bottom edge and a second bottom edge which are parallel, and the first bottom edge and the second bottom edge are perpendicular to each other. The length of the first bottom edge is smaller than that of the second bottom edge, and the first bottom edge is connected to the feeder line. The invention further discloses the radar, the radar comprises a PCB substrate and an antenna, the antenna is arranged on the PCB substrate, and the antenna is the horizontally polarized antenna. The horizontally polarized antenna provided by the invention can realize wider antenna bandwidth and smaller gain change, thereby realizing stable detection of the radar, having low requirements for processing and reducing the processing cost.

Description

technical field [0001] The invention relates to the technical field of millimeter wave radar, in particular to a horizontally polarized antenna and radar. Background technique [0002] The Advanced Driving Assistance System (Advanced Driving Assistance System) uses various sensors (millimeter-wave radar, laser radar, single / binocular camera and satellite navigation) installed on the car to sense the surrounding environment at any time during the driving process. Environment, collect data, identify, detect and track static and dynamic objects, and combine the navigator map data to perform systematic calculation and analysis, so that the driver can be aware of possible dangers in advance and effectively increase the comfort of driving sex and safety. Among various sensors, millimeter-wave radar can distinguish and identify very small targets, and can identify multiple targets at the same time. It has the advantages of strong penetrating ability, small size, and low price. Wi...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/38H01Q1/32G01S7/02
CPCG01S7/02H01Q1/3233H01Q1/36H01Q1/38
Inventor 王俊涛何月李旭阳武尧晰
Owner ZONGMU TECH SHANGHAI CO LTD