High-isolation multi-input multi-output antenna based on parasitic structures

Abstract

The invention discloses a high-isolation multi-input multi-output antenna based on parasitic structures. The high-isolation multi-input multi-output antenna comprises an array element cell; the arrayelement cell comprises two antenna elements which adopt the same structure and are back on to each other, each of the antenna elements comprises a substrate and a ground plate arranged at the lower part on the back surface of the substrate, the substrate and the ground plate are of an integrated structure, and a first parasitic structure and a second parasitic structure are arranged on the back surface of the substrate; a first F-shaped structure and a second F-shaped structure are arranged on the front surface of the substrate; the first parasitic structure and the second parasitic structureare symmetrically arranged about a center line of the substrate, and the first F-shaped structure and the second F-shaped structure are symmetrically arranged about the center line of the substrate; the first parasitic structure and the second parasitic structure from a low-frequency radiation unit and a reflection unit of the antenna element. With the adoption of the invention, the isolation of the antenna is improved.

Description

technical field [0001] The invention relates to a wireless communication antenna, in particular to a high-isolation multiple-input multiple-output antenna based on a parasitic ground structure. Background technique [0002] With the rapid development of the wireless communication industry and the maturity of the antenna manufacturing process, people have higher and higher requirements for wireless communication systems, such as wider operating bandwidth and higher speed. Therefore, as one of the core technologies of the fourth generation (4G) mobile communication, multiple-input multiple-output (MIMO) wireless communication technology has great advantages in increasing the working bandwidth and transmitting power, etc. It is bound to have a broader application prospect in the future 5G communication system. [0003] Multiple-input multiple-output (MIMO) systems are capable of higher data rates at the same signal-to-noise ratio than single-input single-output (SISO) systems,...

AI Technical Summary

Problems solved by technology

It can be seen that when the MIMO antenna is applied to a small mobile device, due to its low isolation, mutual coupling will occur, and the mutual coupling will affect the performance of the antenna.

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