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A well-shaped patch dual-port fed high-isolation planar antenna

A feeding and patch technology, applied in the field of MIMO antennas, can solve the problems of no polarization diversity characteristics, low isolation of antenna elements, unfavorable device miniaturization, etc., and achieve the effect of low antenna profile, good device quality and easy processing

Inactive Publication Date: 2018-04-06
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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  • A well-shaped patch dual-port fed high-isolation planar antenna
  • A well-shaped patch dual-port fed high-isolation planar antenna
  • A well-shaped patch dual-port fed high-isolation planar 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 in the present invention consists of four parts: No. 1 antenna unit, No. 2 antenna unit, square dielectric substrate 3, and ground plate 4, as shown in FIG. 1 , and the specific size parameters are shown in Table 1.

[0016] Table 1. The structural parameters shown in the accompanying drawings are as follows (unit: mm).

[0017]

[0018] The letters in the table represent the geometric dimension parameters in the figure, which are marked in Figure 1.

[0019] L feed The length of the coupling part of the feeding coupling line for the T-shaped 50-ohm ports of antenna unit 1 and antenna unit 2, W feed Width of the coupling part of the feeding coupling line for the T-shaped 50-ohm ports of antenna unit 1 and antenna unit 2, L port The length of the feeding portion of the coupling line for the T-shaped 50-ohm ports of ...

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Abstract

The invention provides a #-shaped patch dual-port feed high-isolation planar antenna, and relates to the field of an antenna for a passive device. The MIMO (multiple-input multiple-out) antenna comprises an antenna unit, a dielectric substrate and an earth plate, wherein the radiation patches in the antenna unit are #-shaped; the antenna unit has mutually-perpendicular T-shaped feed coupling line ports; due to the sharing characteristics of the radiation patches, the antenna dimension can be greatly decreased, so that the occupied space can be tremendously decreased; meanwhile, by adoption of a microstrip line, the section of the antenna is relatively low, so that the antenna is easy to process; according to the antenna provided by the invention, the isolation of the antenna can be greatly improved; the antenna has stable polarization diversity characteristics; mature production technology for the dielectric substrate, relatively good device quality, high stability, high mechanical strength, and convenience in processing and cleaning; and therefore, the planar antenna is suitable for batch production and has relatively high actual application value.

Description

technical field [0001] The invention relates to the field of antennas in passive devices, especially MIMO antennas. Background technique [0002] With the continuous development of wireless communication technology, limited wireless resources are facing the dilemma of communication data explosion, and traditional technology can no longer meet the requirements of data transmission rate and quality. Multiple-Input Multiple-Output MIMO (Multiple-Input Multiple-Output MIMO) technology can double the capacity and spectrum utilization of the communication system without increasing the bandwidth. And it has been listed as one of the core technologies of LTE (Long Term Evolution). [0003] Scholars at home and abroad have done a lot of research on MIMO antennas. For example: Y.Gao et al. designed a two-unit MIMO antenna system with a very small floor that operates at a center frequency of 5.2 GHz and is applied to WLAN. The coupling degree between the antennas is reduced to below ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q1/52
CPCH01Q1/38H01Q1/50H01Q1/52
Inventor 李海雄魏彤欣丁君郭陈江
Owner NORTHWESTERN POLYTECHNICAL UNIV