High-isolation MIMO (Multiple Input Multiple Output) antenna

A high-isolation, antenna technology, applied in the direction of antenna coupling, etc., can solve the problems of large size, poor isolation, narrow frequency band, etc., and achieve the effect of compact structure, low cost, and low mutual coupling

Inactive Publication Date: 2015-06-10
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention discloses a high-isolation MIMO antenna. The antenna includes two mirror-symmetric unit antennas. An isolator is placed between the two unit antennas to enhance the isolation perform

Method used

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  • High-isolation MIMO (Multiple Input Multiple Output) antenna
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  • High-isolation MIMO (Multiple Input Multiple Output) antenna

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[0020] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples.

[0021] The dielectric substrate (1) material used in the antenna described in this embodiment is FR-4 (epoxy fiberglass board), the substrate size is W * L, and the thickness is h, wherein W=39mm, L=52mm, h=1.6mm . Working in the WLAN frequency band, the antenna adopts the microstrip feeding method, the length of the two microstrip feeders is Wf = 28mm, the width is W1 = 2mm, and the thickness of the copper coating is 0.035mm.

[0022] The two radiators in this embodiment are E-shaped planar microstrip metal patches, with a branch width of 1.97mm and a copper thickness of 0.035mm. The two radiators are respectively located at the left and right corners of the upper end of the dielectric substrate (1), and the opening direction faces Internal and mirror symmetrical settings...

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Abstract

The invention discloses a high-isolation MIMO (Multiple Input Multiple Output) antenna, and belongs to the technical field of antennas. The whole antenna is symmetric around a central axis by a left and right mirror manner. The antenna comprises a rectangular dielectric substrate, a first radiator, a second radiator, a first microstrip feeder, a second microstrip feeder, an isolator, and a grounding plate which is equipped with a rectangular gap and arranged on the rear surface of the dielectric substrate, wherein the first radiator, the second radiator, the first microstrip feeder, the second microstrip feeder and the isolator are arranged on the front surface of the dielectric substrate. According to the antenna, the isolation performance of the system can be improved by the isolator; slots are formed in a floor, so that the bandwidth of the antenna can be increased; the problems of poor isolation, narrow frequency band and large size of the traditional MIMO antenna can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a high-isolation MIMO (multiple-input multiple-output) antenna. Background technique [0002] Wireless MIMO technology is considered to be one of the key technologies to realize high-speed broadband wireless Internet access in the future. It can meet the requirements of high-speed transmission rate and wide coverage in future mobile communication, and has broad application prospects in mobile communication systems. Traditional wireless communication systems usually only use one transmitting antenna and one receiving antenna, that is, SISO (Single Input Single Output) system. Or in the case of the total transmission power, the multi-antenna diversity technology is used to greatly increase the data throughput and transmission distance of the system. The core concept of MIMO technology is to use the spatial degrees of freedom provided by multiple transmitting antennas ...

Claims

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Application Information

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IPC IPC(8): H01Q1/52
Inventor 胡昊路志刚彭立
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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