4*4 ultra-wideband MIMO antenna

Abstract

The invention relates to a 4*4 ultra-wideband MIMO antenna, which belongs to the technical field of wireless communication. The 4*4 ultra-wideband MIMO antenna consists of four monopole ultra-wideband antenna units, two rectangular reticular cross-shaped isolation structures and a dielectric plate. The four monopole ultra-wideband antenna units have a same structure and are situated on the four corners of the dielectric plate. Two antennas on one diagonal line turn180 degrees, and antennas on one horizontal line turn 90 degrees. The integral body is centrosymmetric relative to the dielectric plate. The two rectangular reticular cross-shaped isolation structures are situated on the centers of the front and back sides of the dielectric plate and are vertically symmetric relative to the dielectric plate. The novel reticular isolation structures introduced in the MIMO antenna allow the antenna to obtain excellent isolation performance. The 4*4 ultra-wideband MIMO antenna has the advantages of wide bandwidth, high isolation degree, simple structure and easy manufacture and integration, and is suitable for various mini mobile terminals.

Description

technical field [0001] The invention relates to a 4×4 ultra-wideband MIMO antenna, which belongs to the technical field of wireless communication. Background technique [0002] Ultra-wideband (UWB) technology is a new type of short-distance high-speed wireless communication technology that has attracted much attention. Since the U.S. Federal Communications Commission has allocated 3.1-10.6 GHz as the UWB frequency band for civilian use, industry and academia have carried out a lot of research work in the field of UWB radio technology. [0003] Multiple-input multiple-output (MIMO) technology is also one of the important technologies for broadband wireless communication in recent years. This technology can double the channel capacity of the system without additionally increasing spectrum resources and antenna transmission power, greatly improving the Spectrum utilization is regarded as the core technology of next-generation mobile communication. Combining UWB technology wit...

AI Technical Summary

Problems solved by technology

According to the existing UWB MIMO antenna design reports, most of them have narrow bandwidth, low isolation, and relatively large size, although many existing MIMO antennas have introduced a variety of isolation structure, but most of them have shortcomings such as too narrow frequency band for improving isolation or poor isolation effect

[0005] The present invention proposes a 4×4 ultra-wideband MIMO antenna based on an electromagnetic bandgap structure. After literature search, there is no public report identical to the present invention.

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