Miniaturized directional mimo antenna for a new generation of distributed wireless communication systems

Abstract

The invention discloses a mini directive MIMO antenna applied to a new generation of distributed wireless communication system. The antenna comprises a base plate and an antenna unit, the lower surface of the base plate is provided with a metal grounding layer, the antenna unit comprises a first antenna board, a second antenna board and a substrate vertical to one another, the first and second antenna boars are provided metal antenna bodies respectively, the upper surface of the substrate is provided with metal short-circuit coupling loop layers corresponding to the first and second antenna boards respectively, the metal antenna bodies are electrically connected with the corresponding metal short-circuit coupling loop layer, each of the first and second antenna boards is connected with one coaxial signal line, and the metal antenna bodies of the first and second antenna boards are connected with the metal grounding layer in the lower surface of the base plate via leads respectively. The mini directive MIMO antenna can completely cover the working frequencies of 2.4-2.485GHz and 5.15-5.85GHz of local area network, is small in size, high in isolation degree and high in directive radiation performance, is not likely to be influenced by the background installation environment, and is suitable for installation in a ceiling manner.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a miniaturized directional MIMO antenna applied to a new generation of distributed wireless communication systems. Background technique [0002] For new wireless systems, the available wireless spectrum is already very limited, therefore, it is very important to increase the channel capacity and reliability of existing wireless systems without utilizing additional spectrum resources. Both information theory and existing research have predicted the potential huge channel capacity of MIMO wireless communication systems. However, some difficulties still need to be overcome in practical applications, among which the design of miniaturized directional low-profile MIMO antennas is one of the difficulties. During the design process of the MIMO antenna system, two parameters, the number of antennas and the antenna elements, need to be considered. The number of antennas determines the ...

AI Technical Summary

Problems solved by technology

However, according to the basic knowledge of the antenna, it can be known that there is a great relationship between the mutual coupling between the antenna units and the spacing of the antenna units. The smaller the spacing, the higher the coupling will be, which will also affect the capacity of the MIMO communication system. other performance damage

Images