Broadband dual-polarized antenna unit based on coupled feeding

A dual-polarized antenna, coupled feed technology, applied in the directions of antennas, electrical components, antenna grounding devices, etc., can solve problems such as poor cross-polarization isolation effect, feeding network occupying too much space, and poor processability. , to achieve good cross-polarization isolation effect, improve cross-polarization isolation, and save lateral space.

Active Publication Date: 2020-08-11
成都雷电微力科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The impedance bandwidth of the antenna is 14%, and the cross-polarization isolation is 23dB, but its structure is cumbersome, the design is complicated, and the feed network occupies too much space, which is not conducive to array formation
[0007] In addition, there are some patent documents disclosing schemes for improving the antenna bandwidth, such as CN110137672A, CN101982899A, etc. Such documents can broaden the antenna bandwidth to a certain extent, but generally speaking, either the cross-polarization isolation effect is insufficient Good, the gain is not ideal, or the machinability is not strong

Method used

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  • Broadband dual-polarized antenna unit based on coupled feeding
  • Broadband dual-polarized antenna unit based on coupled feeding
  • Broadband dual-polarized antenna unit based on coupled feeding

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Embodiment 1

[0060] Such as figure 1 , 2 As shown, this embodiment discloses a broadband dual-polarized antenna unit based on coupling feed, including a radiation layer 1, a feed layer 2, a metal substrate 4 and a connection structure 3 connected layer by layer, the radiation layer 1 and the feed Layer 2 coupling.

[0061] The radiation layer 1 includes a substrate-integrated waveguide cavity structure, and a main radiation patch 13 and a parasitic radiation patch 11 arranged on the end face of the substrate-integrated waveguide cavity. The substrate-integrated waveguide cavity structure can confine electromagnetic waves and suppress surface waves. The parasitic radiation patch 11 is at least one piece (the number is not limited to one piece), which serves to broaden the working bandwidth of the broadband dual-polarized antenna unit based on coupling feeding.

[0062] The feed layer 2 includes a first feed slot and a second feed slot orthogonal to each other, and a connection structure ...

Embodiment 2

[0076] This embodiment discloses a broadband dual-polarized antenna unit based on coupled feeding, such as figure 1 , 2 As shown, it includes a radiation layer 1 , a feed layer 2 , a metal substrate 4 and a connection structure 3 connected layer by layer. In one embodiment, the connection structure 3 is welded on the metal substrate 4 , the feed layer 2 is welded on the metal substrate 4 , and the radiation layer 1 is connected to the side of the feed layer 2 away from the metal substrate 4 .

[0077] Such as image 3 As shown, the radiation layer includes the radiation layer ground 17, the radiation layer ground hole 171, the radiation layer metallized through hole 19, the radiation layer non-metallized through hole 18, the radiation layer lower dielectric substrate 16, the radiation layer prepreg 15, the radiation layer The upper dielectric substrate 14 , the main radiation patch 13 , the parasitic radiation patch 11 and the upper surface metal layer 12 .

[0078] The rad...

Embodiment 3

[0102] This embodiment discloses a broadband dual-polarized antenna unit based on coupled feeding, such as figure 2 As shown, it includes four parts: radiation layer 1 , feed layer 2 , connection structure 3 and metal substrate 4 .

[0103] The structure of radiation layer 1 is as follows image 3 As shown, it includes radiation layer ground 17, radiation layer through hole 171, radiation layer metallized through hole 19, radiation layer non-metallized through hole 18, radiation layer lower dielectric substrate 16, radiation layer prepreg 15, radiation layer upper dielectric The substrate 14 , the main radiation patch 13 , the parasitic radiation patch 11 and the upper surface metal layer 12 .

[0104] The main radiation patch 13 is located on the lower surface of the dielectric substrate 14 on the radiation layer, and the parasitic radiation patch 11 is located on the upper surface of the dielectric substrate 14 on the radiation layer. The parasitic radiation patches 11 pl...

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Abstract

The invention discloses a broadband dual-polarized antenna unit based on coupled feeding. The broadband dual-polarized antenna unit comprises a radiation layer, a feeding layer, a metal substrate anda connecting structure which are connected layer by layer, wherein the radiation layer is coupled with the feed layer, the radiation layer comprises a first substrate integrated waveguide cavity structure and a main radiation patch and a parasitic radiation patch which are arranged on the end surface of the first substrate integrated waveguide cavity structure, the main radiation patch is matchedwith the parasitic radiation patch, the feed layer comprises a first slot feed and a second slot feed which are orthogonal to each other, and the connecting structure penetrates through the metal substrate and is connected to the first slot feed and the second slot feed respectively. The designed antenna unit has a wide standing wave bandwidth, the first slot feed and the second slot feed which are orthogonal to each other have a good cross polarization isolation effect, the designed antenna unit is compact in structure, and the designed hierarchical structure is good in machinability.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a broadband dual-polarization antenna unit based on coupling feeding. Background technique [0002] The dual-polarized antenna can transmit or receive two orthogonally polarized electromagnetic waves, so within the same bandwidth, the antenna can transmit or receive two kinds of signals, which is conducive to frequency multiplexing or simultaneous operation of transceivers. Currently commonly used dual-polarized antennas include waveguide slot antennas, horn antennas, printed dipole antennas, and microstrip antennas. Among them, the design and processing of the waveguide slot antenna is difficult, the horn antenna is large in size, heavy in weight, and high in profile, and the printed dipole antenna also has the problem of high profile, which is no longer applicable in some application scenarios. Microstrip antennas have been widely used because of their small size, light weigh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50H01Q1/48H01Q15/24
CPCH01Q1/36H01Q1/38H01Q1/48H01Q1/50H01Q15/24
Inventor 蒋立平薛伟肖润均丁卓富邓金峰
Owner 成都雷电微力科技股份有限公司
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