Reusable Automotive mmWave Radar Antenna Array

A millimeter-wave radar and array technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as occupying a large area and affecting the size of the radar system, and achieve the effects of reducing the area, increasing the detectable distance, and reducing the overall size

Active Publication Date: 2021-07-20
清矽微电子(南京)有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Antennas with three different gains take up a lot of area, which in turn affects the size of the radar system

Method used

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  • Reusable Automotive mmWave Radar Antenna Array
  • Reusable Automotive mmWave Radar Antenna Array
  • Reusable Automotive mmWave Radar Antenna Array

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Embodiment Construction

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention

[0017] The embodiment of the present invention discloses a reusable automotive millimeter-wave radar antenna array, which reduces the overall area of ​​the radar system by reusing antennas in different modes. Such as figure 1 As shown, the array is a serial microstrip array in the vertical direction, and there are 8 identical serial microstrip arrays in the horizontal direction. In the transverse direction of the array, the three series microstrip antenna arra...

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Abstract

The invention discloses a reusable automotive millimeter-wave radar antenna array, which belongs to the field of automatic driving. The array consists of a sub-array with a halving power divider and two sub-arrays with a third-equal power splitter; the two third-equal molecular arrays are respectively located on both sides of the second-equal molecular array; the sub-arrays are composed of longitudinal Composed of series microstrip antenna and microstrip power splitter. When the radar works in the short-range mode, the second-class molecular array works; when the radar works in the middle-range mode, any third-class molecular array works; when the radar works in the long-range mode, the three arrays work at the same time; The switching of the working mode is realized inside the chip; at the same time, the radio frequency chip has three identical radio frequency output terminals, which are respectively connected to three sub-arrays; the present invention reduces the antenna area of ​​the whole system by multiplexing the antennas in different modes, and the volume of the radar system can be reduced. Significantly reduced.

Description

technical field [0001] The invention belongs to the field of automotive millimeter-wave radar, in particular to a range-finding radar microstrip antenna array. Background technique [0002] In recent years, since it is not affected by temperature, environment and weather conditions, the application of millimeter-wave radar in autonomous driving has received more and more attention. Whether it can achieve miniaturization, low cost, and integration with the shape of the car has become a key factor for millimeter-wave radar to compete in the autonomous driving market. [0003] At present, the automotive millimeter-wave radar system generally adopts the structure of three transmitting channels and four receiving channels. Four receiving channels are used to better obtain the angle information of the detected object. In order to detect objects at far, medium and near distances respectively, antennas with different gains are connected to the three transmitting channels. The hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/28
CPCG01S7/28
Inventor 何建中董吉
Owner 清矽微电子(南京)有限公司
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