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Microstrip array antenna system based on 77GHz millimeter wave radar

A millimeter-wave radar and antenna system technology, which is applied to specific array feeding systems, individually powered antenna arrays, and independent non-interacting antenna combinations, etc. The problem of poor antenna consistency, etc., can reduce the influence of the antenna pattern, improve the isolation, and improve the consistency.

Pending Publication Date: 2021-11-23
上海莫吉娜智能信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the width of the feeder line of the series-fed antenna is narrow (below 5mil), and the processing is difficult
Moreover, the feeder line of the antenna structure is long, and the consistency between the antennas is relatively poor.

Method used

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  • Microstrip array antenna system based on 77GHz millimeter wave radar
  • Microstrip array antenna system based on 77GHz millimeter wave radar
  • Microstrip array antenna system based on 77GHz millimeter wave radar

Examples

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Embodiment Construction

[0030] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0031] see figure 1 and figure 2 As shown, it is a schematic structural diagram of the microstrip array antenna system based on the 77GHz millimeter-wave radar of the present invention. The antenna system consists of a copper-clad floor, a dielectric substrate, a receiving antenna, a transmitting antenna and a feed network. Both the receiving antenna and the transmitting antenna adopt a 2×11 microstrip comb-shaped array antenna structure, and are connected to the millimeter-wave radar chip through a feed network. In order to further improve the performance of the antenna and suppress the side lobe of the antenna, a shield structure is added around the chip to suppress the influence of the chip and the microstrip connection line on the antenna.

[0032] In a further embodiment, the dielectric constant of the dielectric substrate is 3.06, t...

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Abstract

The invention relates to a microstrip array antenna system based on a 77GHz millimeter wave radar, and belongs to the technical field of antennas. The microstrip array antenna system based on the 77GHz millimeter wave radar comprises a dielectric substrate, a transmitting antenna and a receiving antenna, the transmitting antenna and the receiving antenna are arranged on the dielectric substrate, and the transmitting antenna and the receiving antenna both adopt microstrip comb-shaped planar array antennas and are connected with a 77GHz millimeter wave radar chip in a mode of switching an SIW through a microstrip and then switching a microstrip line. In order to improve the consistency among the antennas and restrain antenna side lobes, the antenna system is additionally provided with a shielding cover structural member. Compared with the prior art, the invention has the advantages of low cost, small size, high performance and the like, and can be used for middle-distance and long-distance detection.

Description

technical field [0001] The present invention relates to the technical field of antenna technology, in particular to the technical field of millimeter-wave radar, and specifically refers to a microstrip array antenna system based on a 77GHz millimeter-wave radar. Background technique [0002] The increasingly complex road traffic environment has prompted my country's requirements for intelligent traffic management systems to be intelligent, comprehensive, accurate, and real-time. However, the existing traffic radar is mainly based on the camera, and its line-of-sight range will be greatly reduced in the case of bad weather such as rain and fog, which is difficult to meet the requirements. The millimeter-wave radar has the advantages of all-weather and real-time performance, and has its unique advantages in measuring the speed and distance of the target. Therefore, the introduction of millimeter-wave radar technology in the field of traffic radar plays an extremely important ...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q1/52H01Q1/22H01Q21/00H01Q21/06H01Q21/28
CPCH01Q1/38H01Q1/50H01Q1/521H01Q1/526H01Q1/22H01Q21/0006H01Q21/0075H01Q21/061H01Q21/28H01Q1/48
Inventor 叶峰
Owner 上海莫吉娜智能信息科技有限公司
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