Eight-unit MIMO antenna applicable to 5G mobile terminal

Abstract

The invention discloses an eight-unit MIMO antenna applicable to a 5G mobile terminal. The antenna comprises a dielectric substrate; a floor is arranged at the bottom of the dielectric substrate; 1*8brackets are arranged above the dielectric substrate; a microstrip antenna structure is etched on each bracket; a grounding point and a feeding point are arranged on each microstrip antenna structureseparately; and each grounding point is welded with the floor. The antenna has a relatively large clearance region, so that the array antenna has very high radiation efficiency; the antenna radiationefficiency within 5G frequency band is greater than 62%; in addition, the antenna structure is heightened through the design of the brackets, so that the radiation space is enlarged, and the array antenna obtains relatively high radiation gain; the design adopts a special arrangement mode, so that the isolation degree between antennas is all greater than 10dB; and furthermore, the array antenna provided by the invention has the characteristics of simple structure and small dimension, so that the antenna has very high practical value in mobile terminal communication.

Description

technical field [0001] The invention belongs to the technical field of 5G mobile communication, and relates to an eight-unit MIMO antenna suitable for 5G mobile terminals. Background technique [0002] With the continuous development of the global economy and people's continuous requirements for a better life, mobile communication services have developed rapidly. With the rapid growth of the number of mobile communication users, there is a lack of spectrum resources, which cannot meet the requirements of modern mobile communication. demand. In 2016, the total number of 4G users in mainland China exceeded 700 million. Throughout the history of mobile communication development, from 2000 when the ITU determined the three mainstream antenna interface standards—the emergence of the 3G era, to the completion of the world’s largest 4G mobile communication network in 2010, until today’s 5G (5th generation mobile networks) communication Technology has developed along with people's...

AI Technical Summary

Problems solved by technology

Commonly used decoupling structures include: quarter-wavelength slot technology, neutralization line technology, decoupling circuit technology and isolation floor technology, etc., but there is currently no effective method in the low frequency band, and the isolation affects the correlation coefficient of the antenna. The high correlation coefficient of the antenna will affect the channel capacity of the MIMO antenna system, and the correlation coefficient of the mobile terminal antenna needs to be less than 0.3 to meet the communication needs

In addition, the radiation space of the general planar antenna is limited, and the radiation efficiency of the antenna is low, so it is difficult to meet the needs of the terminal antenna

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