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A high-isolation large-scale mimo base station antenna with a coupling unit

A technology of coupling unit and base station antenna, which is applied in the field of base station antenna of 5G communication, and can solve problems such as large coupling of same-frequency antenna unit and influence of overall radiation performance of base station antenna

Active Publication Date: 2020-10-20
BEIHANG UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] However, when massive MIMO antennas are used as indoor and outdoor base station antennas, due to the formation of multiple co-frequency antennas, the coupling between co-frequency antenna units in the same polarization direction is particularly large, which has a negative impact on the overall radiation performance of the base station antenna. great influence

Method used

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  • A high-isolation large-scale mimo base station antenna with a coupling unit
  • A high-isolation large-scale mimo base station antenna with a coupling unit
  • A high-isolation large-scale mimo base station antenna with a coupling unit

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Effect test

Embodiment 1

[0063] Embodiment 1: The copper-clad configuration of the dual-polarized antenna unit and the H-shaped cross-coupling unit. The thickness of the copper-clad is 0.035mm. Other specific dimensions are as follows:

[0064] a 1 =20mm,b 1 =20mm, c 1 = 0.8mm, r 1 = 15mm;

[0065] a 10 =0.4mm;

[0066] a 11 = 1.2 mm, r 11 =0.35mm;

[0067] a 12 =1.2mm, b 12 =0.7mm;

[0068] a 13 =1.2mm, b 13 =0.7mm;

[0069] a 2 =35mm,b 2 =35mm, c 2 =0.8mm;

[0070] a 21 = 2 mm, b 21 =12mm;

[0071] a 22 = 2 mm, b 22 =12mm;

[0072] a 23 = 2 mm, b23 =12mm;

[0073] a 24 = 2 mm, b 24 =12mm;

[0074] a 25 =24mm, b 25 = 2mm;

[0075] a 26 =24mm, b 26 = 2mm;

[0076] a 3 =344mm, b 3 =250mm, c 3 =63mm;

[0077] a 31 =43mm,b 31 =62.5mm;

[0078] a 32 =21mm,b 32 =31.25mm;

[0079] a 33 =107.5mm, b 33 =31.25mm;

[0080] Carry out performance evaluation to embodiment 1 adopting S parameter, only consider H 11 and H 22 coupling, and M 11 The role of: the dotte...

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Abstract

The invention provides a high-isolation large-scale MIMO base station antenna with coupling units, which is composed of sixteen dual-polarized antenna units, nine H-shaped cross coupling units, a metal base plate, and an antenna housing. The dual-polarized antenna unit is composed of two units which are perpendicularly placed and crossed with each other with a phase of + / - 45 DEG. The H-shaped cross coupling unit is composed of a coupling unit dielectric plate and two vertical H-shaped structural branches. The metal base plate clings to the bottom of the antenna housing, and the dual-polarizedantenna units and H-shaped cross coupling units are horizontally placed just above the metal base plate; the dual-polarized antenna units are arranged evenly in a 4*4 matrix, and H-type coupling units are evenly arranged in a 3*3 matrix. The high-isolation large-scale MIMO base station antenna can inhibit the spurious emission in the working frequency band after the 5G large-scale base station antenna is combined, enhance the electromagnetic compatibility of the base station antenna, improve the isolation between the two antennas, and prevent the mutual coupling from being suppressed; the antenna shape does not need to be completely changed, and the production is simple.

Description

technical field [0001] The invention relates to a high-isolation large-scale MIMO base station antenna with a coupling unit, and relates to a base station antenna for 5G communication. The antennas are separated by H-type coupling units, thereby improving the isolation between antenna units of the same frequency Spend. The coupling unit of the invention is suitable for coupling suppression between multiple types of antennas with the same frequency. Background technique [0002] With the increasing development of communication networks and the promotion and application of 3G and 4G technologies, mobile users have increasingly strong demands for faster data transmission and better mobile devices. In the future, more than 5 billion things such as clothes, cars, trains, and sensors will be connected to mobile networks. Compared with the current network, they will transmit data equivalent to 1000 times the current data volume at a speed of 10-100 times. Engineers in some countr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/52
CPCH01Q1/36H01Q1/38H01Q1/52
Inventor 吴琦
Owner BEIHANG UNIV
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