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Coupling counteracting path branch knot and high-isolation millimeter wave phased array antenna based on coupling counteracting path branch knot

A phased array antenna and coupling path technology, applied in the directions of antenna, antenna coupling, resonant antenna, etc., can solve the problems of cross section, complex design, unsuitable for antenna design, etc., achieve easy processing, realize broadband matching characteristics, cost and weight small effect

Active Publication Date: 2021-05-25
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of this decoupling surface will bring many problems such as extra profile, design complexity, etc.
This poses a great challenge to the overall design of the antenna array, and is not suitable for antenna design in a compact environment

Method used

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  • Coupling counteracting path branch knot and high-isolation millimeter wave phased array antenna based on coupling counteracting path branch knot
  • Coupling counteracting path branch knot and high-isolation millimeter wave phased array antenna based on coupling counteracting path branch knot
  • Coupling counteracting path branch knot and high-isolation millimeter wave phased array antenna based on coupling counteracting path branch knot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] In this embodiment, the coupling cancellation path stub 3 includes a pair of first grounding posts 4 and a π-shaped metal strip 5 .

[0057] In this example, if Figure 1a and Figure 1b As shown, the high-isolation millimeter-wave phased array antenna includes two radiating laminated microstrip antenna units 1 and two coupling-cancellation path stubs 3, forming a high-isolation millimeter-wave binary antenna array based on the coupling-cancellation path.

[0058] In a high-isolation millimeter-wave binary antenna array based on a coupling cancellation path, two radiating stacked microstrip antenna units 1 are respectively provided with a first port 9 and a second port 10, and the first port 9 and the second port 10 are respectively located at On the center line of the corresponding radiating stacked microstrip antenna unit 1; the first port 9 is excited, and the energy of the feed network layer 11 is coupled to the radiating stacked microstrip antenna unit 1 through th...

Embodiment 2

[0071] In this embodiment, the coupling cancellation path stub 3 includes two pairs of first ground pillars 4 and two π-shaped metal strips 5 .

[0072] In this example, if Figure 6a and Figure 6b As shown, the high-isolation millimeter-wave phased array antenna includes two radiating laminated microstrip antenna units 1 and two coupling-cancellation path stubs 3, forming a high-isolation millimeter-wave binary antenna array based on the coupling-cancellation path.

[0073] In a high-isolation millimeter-wave binary antenna array based on a coupling cancellation path, two radiating stacked microstrip antenna units 1 are respectively provided with a first port 9 and a second port 10, and the first port 9 and the second port 10 are respectively located at On the center line of the corresponding radiating stacked microstrip antenna unit 1; the first port 9 is excited, and the energy of the feed network layer 11 is coupled to the radiating stacked microstrip antenna unit 1 thro...

Embodiment 3

[0086] In this embodiment, the coupling cancellation path stub 3 includes a pair of first grounding posts 4 and a π-shaped metal strip 5 .

[0087] In this example, if Figure 11a and Figure 11b As shown, the high-isolation millimeter-wave phased array antenna includes four identical subarrays, and the entire array is provided with four subarray ports: the first port 9, the second port 10, the third port 12, and the fourth port 13, such as Figure 12a As shown, the first port 9, the second port 10, the third port 12, and the fourth port 13 are placed under the sub-array, arranged in a row at a distance of 5mm, which is convenient for testing, and each sub-array includes four radiating stacked microstrip antennas Unit 1 and three feed network layers 11. The feed network layer 11 is a feed network of a one-to-two substrate integrated waveguide power divider; the sub-array includes a radiating laminated microstrip antenna unit 1 and a second grounding post 7 The shielding meta...

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Abstract

The invention discloses a coupling counteracting path branch knot and a high-isolation millimeter wave phased array antenna based on the coupling counteracting path branch knot. The high-isolation millimeter wave phased array antenna comprises a plurality of radiation laminated microstrip antenna units, a shielding metal wall, a plurality of coupling offset path branches, a metal floor, a feed network layer, a first port and a second port; the first port is excited, the energy of the feed network layer is coupled to the corresponding radiation laminated microstrip antenna unit through the I-shaped gap, and the energy is transmitted to the second port adjacent to the first port through the inherent coupling path part; and the coupling offset path branch knot is introduced to offset the inherent coupling path, so that the high isolation effect between the first port and the second port is realized. Due to the adoption of the simple decoupling branches, the broadband high isolation effect can be realized, the active standing-wave ratio in a working frequency band and the scanning capability of the array antenna are improved, and the antenna has the advantages of compact structure and simple design.

Description

technical field [0001] The invention relates to the field of millimeter-wave phased array antennas, in particular to a coupling cancellation path stub and a high-isolation millimeter-wave phased array antenna based thereon. Background technique [0002] With the development of fifth-generation wireless communication technology, millimeter-wave array antennas are a hot research topic. Millimeter-wave array antennas have the advantages of high bandwidth, high speed, low latency, and small size, and are widely used in base station antennas, indoor communications, and fixed-point communications. However, the millimeter-wave antenna array has problems such as serious surface waves and high coupling, which seriously deteriorate the radiation efficiency and scanning angle of the array antenna. In order to improve the coupling between array antennas, traditional high-isolation methods are generally applicable to binary arrays, and it is difficult to extend to large-scale array desi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/52H01Q21/00
CPCH01Q21/00H01Q1/52H01Q1/38H01Q1/48H01Q1/523H01Q9/0414H01Q3/30H01Q9/045
Inventor 车文荃杨琬琛谷礼政薛泉廖绍伟
Owner SOUTH CHINA UNIV OF TECH
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