Slot array loading four-unit multi-frequency high-isolation microstrip MIMO antenna

A slot array, high isolation technology, applied in the direction of slot antenna, antenna, antenna coupling, etc., can solve the problems of no polarization diversity characteristics, low antenna unit isolation, unfavorable device miniaturization, etc., to achieve easy purchase, antenna profile Low, easy-to-process effects

Inactive Publication Date: 2017-02-22
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above antennas all have the disadvantage of large antenna volume, which is not conducive to the current demand for device miniaturization. In addition, the isolation of the antenna unit is relatively low, the interference is large, and there is no polarization diversity feature.

Method used

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  • Slot array loading four-unit multi-frequency high-isolation microstrip MIMO antenna
  • Slot array loading four-unit multi-frequency high-isolation microstrip MIMO antenna
  • Slot array loading four-unit multi-frequency high-isolation microstrip MIMO antenna

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] The MIMO antenna designed by the present invention consists of six parts: No. 1 antenna unit-No. 4 antenna unit, dielectric substrate 5 and ground plate 6, such as figure 1 As shown, the specific structural size parameters are shown in Table 1, and the parameter unit in Table 1 is mm.

[0016] Table 1

[0017] variable value variable value L sub

105.00±5.00 W sub

68.00±2.00 H sub

1.60±0.08 g 1.00±0.02 L patch

35.00±1.50 W patch

21.00±1.00 L port

2.98±0.10 W port

2.00±0.08 L feed

10.00±0.40 W feed

1.10±0.05 w 2.00±0.10 d 1.41±0.06

[0018] The letters in Table 1 represent the geometric dimension parameters in the figure, in figure 1 There are corresponding signs in .

[0019] L sub - the length of the rectangular dielectric substrate, W sub - the width of...

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Abstract

The invention provides a slot array loading four-unit multi-frequency high-isolation microstrip MIMO antenna and relates to the field of research of antennas in passive devices. The four-unit antenna unit is provided with a T-shaped feed coupling line port, and a slot array is periodically loaded on a radiation patch to realize polarization diversity, so that the antenna isolation is improved, the four-unit MIMO antenna system inhibits coupling among antennas, excites more resonance frequency points and improves a high-order mode directional diagram, and the size of the antenna is greatly reduced; the coupling feeder line and the radiation unit adopt microstrip lines, so that the section of the antenna is low and the antenna is easy to process; and the designed antenna has multi-frequency point frequency working characteristic and stable polarization diversity characteristic, and a dielectric substrate is low in price and easy to buy, in a word, the slot array loading four-unit multi-frequency high-isolation microstrip MIMO antenna is low in manufacturing cost and easy to process, realizes batch production and has a great actual application value.

Description

technical field [0001] The invention relates to the research field of antennas in passive devices, in particular to a planar microstrip MIMO antenna for WLAN. Background technique [0002] With the continuous development of wireless communication technology and applications, the popularization of 4G communication, the arrival of 5G communication and the proposal of the Internet of Things all put forward higher requirements on the data transmission rate and channel capacity of wireless communication systems. Therefore, the Multiple Input and Multiple Output (MIMO) wireless communication system proposed by Marconi as early as 1908 has attracted people's attention again. The MIMO wireless communication system does not require additional system bandwidth and transmission power. , can greatly improve the wireless channel capacity and the reliability of data transmission, so it has been widely studied and has been applied in the base station of mobile communication. However, as t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/52H01Q13/10H01Q1/24H01Q1/36H01Q21/00
CPCH01Q1/242H01Q1/36H01Q1/523H01Q13/106H01Q21/005
Inventor 李海雄张改改丁君郭陈江
Owner NORTHWESTERN POLYTECHNICAL UNIV
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