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Vehicle millimeter wave broadband substrate integrated waveguide slot antenna

A substrate-integrated waveguide and slot antenna technology, applied in slot antennas, antennas, antenna arrays, etc., can solve the problems of no mature technical solutions, and achieve the effect of size reduction and easy connection

Pending Publication Date: 2019-11-19
HUIZHOU DESAY SV INTELLIGENT TRANSPORTATION TECH INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no mature technical solutions and products at 79GHz

Method used

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  • Vehicle millimeter wave broadband substrate integrated waveguide slot antenna
  • Vehicle millimeter wave broadband substrate integrated waveguide slot antenna
  • Vehicle millimeter wave broadband substrate integrated waveguide slot antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A vehicle-mounted millimeter wave broadband substrate integrated waveguide slot antenna, such as Figure 1-3 As shown: it includes an area array structure etched on the PCB board, matching network 3 and microstrip power divider 4. The area array structure includes multiple linear array structures with the same structure, and the multiple linear array structures are respectively connected to a matching network 3 is connected in parallel with the microstrip power divider 4; the line array structure includes a feeder 2 connected to a matching network 3 and a plurality of radiators 1 arranged on the feeder 2. Among them, the width of multiple radiators 1 is the same, and the length of radiator 1 gradually decreases from the middle to both sides; the vertical distance between radiator 1 and the center line of feeder 2 gradually decreases from the middle to both sides; The impedance transformation network 5 having the same number as the line array structure is connected to th...

Embodiment 2

[0038] Based on Example 1, such as Figure 4-5As shown: the impedance transformation network 5 and the phase adjustment network 6 having the same number as the line array structure are connected to the microstrip power divider 4 at the same time; the phase adjustment network 6 is connected to the matching network 3 . Applying this design to the 77GHz millimeter wave broadband substrate integrated waveguide slot antenna, the simulation results are as follows Figure 9-10 shown by Figure 9 It can be seen from the gain direction simulation diagram that the antenna simulation gain of this embodiment reaches 21dBi, the 3dB beamwidth of the E plane is ±5.8°, the 3dB beamwidth of the H plane reaches 102.3°, and the 6dB beamwidth can reach 136°. The beamwidth and gain can not only It meets the gain requirements of the near-medium-range and long-distance test of automotive radar, and also meets the requirements of large-angle beam coverage of automotive radar in the surrounding infor...

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Abstract

The invention relates to a vehicle millimeter wave broadband substrate integrated waveguide slot antenna. The antenna includes an area array structure etched on a PCB, matching networks and microstrippower dividers; the area array structure includes multiple linear array structures with same structures; the multiple linear array structures are respectively connected to one matching network and parallelly connected to the microstrip power dividers; and the linear array structures include feed lines connected to the matching networks and multiple radiators arranged on the feed lines. Through the etching of the multiple radiators, the feed lines, the matching networks and the microstrip power dividers on the same surface of the PCB, so that the antenna is convenient for connection, and therefore, the size of the antenna can be reduced, and the antenna can meet performance requirements of high gain, narrow wave beams, low sidelobe and ultra-wide band.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a vehicle-mounted millimeter-wave broadband substrate integrated waveguide slot antenna. Background technique [0002] In recent years, with the rapid growth of my country's economy, the number of cars has increased significantly, and the annual traffic accidents and property losses caused by accidents have also increased sharply. How to make people enjoy the convenience that cars bring to life while reducing the occurrence of traffic accidents and improving the safety and reliability of cars has become the main focus of major car manufacturers and consumers. Automobile anti-collision radar is a kind of automobile auxiliary driving system that can provide early warning or directly intervene in the driver's operation to prevent accidents, and can significantly enhance the safety of vehicles. Compared with 24GHz radar, 77GHz millimeter-wave radar not only has a larger power toler...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q13/10H01Q21/00
CPCH01Q13/106H01Q1/38H01Q1/50H01Q21/00
Inventor 李权邓万强王昆鹏孙靖虎
Owner HUIZHOU DESAY SV INTELLIGENT TRANSPORTATION TECH INST CO LTD
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