High-isolation symmetrical folding short-circuit dipole two-unit MIMO antenna

Abstract

A high-isolation symmetrical folding short-circuit dipole two-unit MIMO antenna comprises two symmetrically-arranged folding short-circuit dipole antenna units and a dumbbell-shaped grounding metal isolator, and the two folding short-circuit dipole antenna units are located at the two sides of the grounding metal isolator respectively, are symmetrical about the central connecting line of a vertical arm of the grounding metal isolator and share one rectangular dielectric substrate. The port isolation degree of the two folding short-circuit dipole antenna units is improved to 20 dB or above through the dumbbell-shaped grounding metal isolator, a planar dipole antenna serves as a basic antenna structure, the two arms of the dipole antenna are folded, and the two arms are short-circuited through the metallized through holes, so that the frequency band width of the antenna is expanded, an antenna far-field radiation pattern is improved, and the antenna far-field radiation efficiency is improved. According to the invention, the antenna complexity is reduced, the bandwidth is expanded, the energy radiation is uniform, and the radiation efficiency of the antenna is improved.

Description

technical field [0001] The invention belongs to the field of wireless communication, and relates to a high-isolation symmetrical folded short-circuit dipole two-unit MIMO antenna. Background technique [0002] With the landing of 5G wireless mobile communication technology, people rely more and more on wireless mobile communication systems. The 5G wireless mobile communication system, characterized by large capacity, high speed and ultra-short delay, is very different from the 4G wireless mobile communication system in terms of network structure and key technologies. Although multiple-input multiple-output (MIMO) technology has been applied in 4G wireless mobile communication systems, the number of MIMO antenna units in 5G communication systems will be greatly increased. The number is as many as several hundred, and the number of independent paths for simultaneous data transmission will also reach several hundred. Such MIMO antenna technology is called massive (massive) MIM...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a high-isolation symmetrical folded short-circuit dipole dipole for the problems of complex MIMO antenna structure, narrow bandwidth, high radiation directivity, and low radiation efficiency in the prior art. Unit MIMO antenna reduces antenna complexity, expands bandwidth, radiates energy evenly, and improves radiation efficiency

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