Compact high-isolation MIMO antenna for 5G mobile terminal

Abstract

The invention discloses a high-isolation MIMO antenna for a 5G mobile terminal. The antenna comprises a rectangular substrate and a metal bottom plate, and is characterized in that the substrate is provided with a three-unit antenna module, and the three-unit antenna module comprises a first dipole antenna unit, a second dipole antenna unit and a monopole antenna unit, of which the radiating surfaces are vertical to the substrate; two right-angle sides of one vertex angle of the substrate are respectively positioned on the radiating surfaces of the first dipole antenna unit and the second dipole antenna unit, and the radiating surface of the monopole antenna unit is parallel to the radiating surface of the first dipole antenna unit or the radiating surface of the second dipole antenna unit and is vertical to the radiating surface of the other dipole antenna unit. The antenna has the advantages that the isolation degree is high, mutual coupling between antennas is effectively reduced in a compact space, the space utilization rate is improved, the structure is compact, the size of the antenna is reduced, and the frequency band required by 5G communication can be covered.

Description

technical field [0001] The invention relates to antenna technology, in particular to a compact high-isolation MIMO antenna for 5G mobile terminals. Background technique [0002] In recent years, with the rapid development of wireless communication and the continuous improvement of communication system capacity, the electromagnetic wave propagation environment has become more and more complex, and the improvement of people's quality of life has also put forward higher requirements for wireless mobile communication systems and mobile phones. Different from the traditional communication system, in the MIMO system including space diversity and space multiplexing, the multipath effect has become a favorable condition, not only can be used to improve the information transmission rate, but also can use the space diversity technology to ensure the transmission of information reliability. [0003] The fifth generation (5G) mobile communication system will be deployed on a large scal...

AI Technical Summary

Problems solved by technology

Decoupling can improve space utilization and ensure the normal operation of MIMO antennas. It is a traditional decoupling method for antennas with compact structures. The traditional decoupling method is to introduce an external decoupling structure into the antenna, which takes up a lot of space and the space utilization rate is not high. The coupling structure will also bring channel coupling and change the original characteristics of the antenna, which can no longer meet the needs of 5G mobile terminals.

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