Planar dual-polarization UWB-MIMO antenna

A dual-polarization, planar technology, applied to the antenna grounding device, the structural form of the radiation element, etc., can solve the problem that the unit arrangement is not convenient to form a MIMO antenna with the number of units, and achieve compact structure, high radiation characteristics, and improved isolation Effect

Inactive Publication Date: 2015-01-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The arrangement of elements in this design is not convenient for forming a MIMO antenna with a larger number of elements

Method used

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  • Planar dual-polarization UWB-MIMO antenna
  • Planar dual-polarization UWB-MIMO antenna
  • Planar dual-polarization UWB-MIMO antenna

Examples

Experimental program
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Effect test

Embodiment

[0039] The above-mentioned planar dual-polarization UWB-MIMO antenna is simulated by CST electromagnetic simulation software. The S-parameter curve of this antenna is as follows figure 2 As shown, when the port P1 feeds power and other ports are connected to matching loads, the antenna works in the 3.2-12GHz frequency band, the S11 parameters are all lower than -10dB, and the S21 transmission parameters are lower than the mutually orthogonal P1 and P2 ports in the same unit. -15dB, the transmission parameters between any other port and P1 or P2 are lower than -20dB, that is, the isolation between ports of different units is higher than 20dB.

[0040] Figure 3 to Figure 12 The three-dimensional gain pattern of the antenna at different frequencies when the ports P1 and P2 are respectively excited to match the other ports. It can be seen that when the P1 or P2 port in the unit is fed, the maximum radiation gain direction is different, and it has a good pattern Diversity effec...

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Abstract

The invention provides a planar dual-polarization UWB-MIMO antenna which is compact in structure and high in port isolation and has ultra wide impedance bandwidth and the good matching feature. The antenna comprises a medium substrate. The upper surface of the medium substrate is provided with four dual-polarization UWB wide-slot antenna units of the same structure, a rectangular coordinate system is built with the center of the medium substrate as the origin of the coordinate, and the four dual-polarization UWB wide-slot antenna units are symmetric about the X axis and the Y axis of the rectangular coordinate system respectively. According to arrangement mode of the dual-polarization UWB wide-slot antenna units, the features of the antenna units are utilized very skillfully, and no other isolation structure is needed to be additionally arranged among the UWB wide-slot antenna units to improve the isolation, so that good matching, isolation and radiation features of the antenna units can be kept, the MIMO antenna structure of the composition is compact in structure and high in port isolation, has ultra wide impedance bandwidth and good matching and is suitable for being applied and popularized in the field of antenna technologies.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a planar dual-polarized UWB-MIMO antenna. Background technique [0002] Ultra-wideband (Ultra-Wideband-UWB) is an important development direction in the wireless field, and has become one of the hot issues and research directions of domestic and foreign communications in recent years. Ultra-wideband technology has the advantages of high transmission rate, strong anti-interference performance, extremely wide bandwidth, low power consumption, large system capacity, strong penetration ability, and good confidentiality. There are two different definition standards for ultra-wideband: the first definition is In 1990, the United States Defense Advanced Research Projects Agency (DARPA) proposed an antenna with a fractional bandwidth exceeding 25%; the second definition was proposed by the Federal Communications Commission (FCC), changing 25% to 20%, and supplementing the definition of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48
Inventor 杨雪松周丽铃王秉中
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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