Metasurface capable of improving performance of multi-antenna system and multi-antenna system adopting metasurface

Abstract

The invention discloses a metasurface capable of improving performance of a multi-antenna system and the multi-antenna system adopting the metasurface. The metasurface consists of a series of periodically-arranged resonators and a dielectric layer for bearing the resonators; by virtue of configuration of the frequency, reflection coefficient and transmission coefficient of each resonator unit, spacings between the resonators, and heights from the metasurface to multiple antenna units, the cross coupling between the multiple antenna units can be lowered to be close to zero in a specified frequency range; and the matching bandwidth of each antenna unit is improved, and meanwhile, the radiation gain of each antenna unit is improved. The metasurface disclosed by the invention can be applied to a multi-antenna communication system and an antenna array which is formed by any multiple antenna units in principle, and can be applicable to antennas of various kinds of forms; and the metasurface disclosed by the invention can be realized by adopting a conventional printed circuit board process, a flexible PCB process and a microwave passive integrated circuit process, and has wide application prospect.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a metasurface for improving the performance of a multi-antenna system for a large-scale multi-antenna communication system in a wireless device and a multi-antenna system using the metasurface. Background technique [0002] Under the trend of big data, mobile Internet, virtual reality, 4K high-definition video and other applications, there is an urgent need for the rapid maturity and application of fifth-generation mobile communication system (5G) technology, including mobile communication, Wi-Fi, high-speed wireless data transmission Without exception, wider transmission rates, lower transmission delays, and more stable and reliable data transmissions are required. In this context, Massive MIMO and irreversible become the standard configuration of the next generation mobile communication system; [0003] The multiple input and output technology uses multiple spat...

AI Technical Summary

Problems solved by technology

[0007] (1) The mutual coupling between antenna elements increases, making the beam scanning angle smaller;

[0008] (2) The side lobe of the antenna is higher;

[0009] (3) Due to the mutual interference between the antenna units, the signal-to-noise ratio becomes worse;

[0010] (4) Mutual coupling between antenna elements reduces the energy that can be effectively radiated, resulting in a decrease in gain;

[0011] (5) The correlation between the antenna units becomes higher, which reduces the communication throughput rate of the MIMO system

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