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Broadband automotive radar microstrip patch antenna

A microstrip patch antenna, automotive radar technology, applied in antenna grounding device, antenna grounding switch structure connection, suitable for antennas on movable objects and other directions, can solve the problems of narrow operating bandwidth and low gain, and achieve easy integration , good mobility, low profile effect

Active Publication Date: 2019-05-03
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional microstrip antenna has a narrow working bandwidth and low gain. Generally, the relative working bandwidth of a typical microstrip antenna is only about 2%-4%.

Method used

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  • Broadband automotive radar microstrip patch antenna
  • Broadband automotive radar microstrip patch antenna
  • Broadband automotive radar microstrip patch antenna

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Embodiment Construction

[0025] Below in conjunction with specific embodiment, further illustrate the present invention.

[0026] figure 1 with figure 2 The structural schematic diagram of the broadband automotive radar microstrip patch antenna provided for this embodiment, the broadband automotive radar microstrip patch antenna is based on the bandwidth characteristics of the symmetrical dual circular antenna, and mainly includes three parts, which are the top radiation metal The patch layer, the intermediate dielectric substrate, and the metal patch layer of the bottom ground plane are closely connected to form a whole antenna. The signal is fed by the feeder of the metal patch layer of the bottom ground plane, and the transmitting antenna is located in the center of the top layer of the entire structure, and is closely connected with the top radiation metal patch layer, so that the top radiation metal patch layer, the intermediate dielectric substrate, and the bottom ground plane metal The patch...

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Abstract

The invention provides a broadband automotive radar microstrip patch antenna. The broadband automotive radar microstrip patch antenna is formed by sequentially connecting a top radiation metal patch layer, an intermediate dielectric substrate and a bottom grounding plate metal patch layer. The top radiation metal patch layer is integrally square. Firstly, a square slot is dug out of an external square patch, and then two or more than two groups of nested patterns with round patches dug out are added into the square slot. Finally, a hexagonal patch with an equilateral triangle dug out is addedinto the center of the nested patterns. The bottom grounding plate metal patch layer is a combination of rectangular patches with different sizes. The frequency band range of the antenna is 22-60 GHz.The relative working bandwidth of the antenna is close to 100%, and the working bandwidth of the antenna completely covers a ka wave band and a U wave band. The working requirement in the radar frequency band range of automobiles is met. Meanwhile the antenna has the advantages of small size, low profile and easy integration. The antenna is suitable for a modern wireless communication system working in above frequency bands.

Description

technical field [0001] The invention relates to the technical field of wireless communication systems, in particular to a broadband microstrip patch antenna that can be applied to automotive radar. Background technique [0002] An antenna is a transformer that converts the guided wave propagating on the transmission line into an electromagnetic wave propagating in an unbounded medium (usually free space), or vice versa. It is used in radio equipment to transmit or A component that receives electromagnetic waves. Engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasures, remote sensing, and radio astronomy, which use electromagnetic waves to transmit information, rely on antennas to work. Therefore, the performance of the antenna is related to the performance of the entire wireless transmission system. [0003] The microstrip antenna is on a thin dielectric substrate, one side is attached with a thin metal layer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q1/32
Inventor 鲁思维单志勇程云鹏
Owner DONGHUA UNIV
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