Omni-directional array antenna and beamforming method thereof

Abstract

The invention discloses an omni-directional array antenna, comprising N omni-directional subarray units which are arrayed to form a round array along a circumference. Each omni-directional subarray unit comprises p coaxially arrayed symmetrical dipoles, wherein the N and the p are natural numbers. The invention also discloses a beamforming method of the omni-directional array antenna. The omni-directional subarray units are excitated in an equiamplitude, in-phase or out-phase mode, thereby forming different types of affair beams such as omni-directional-beam, double-beam, three-beam and four-beam. According to the method, various MIMO beamforming capabilities of the omni-directional antenna are realized; the omni-directional array antenna is high in gain, many in formed beam, simple in algorithm, low in array element coupling and low in cost; and the omni-directional array antenna shows huge potential in a future 5G application. The method is characterized by that the thinking is novel, the principle is clean and the method is universal, simple and practicable. The method is also effective and applicable to beamforming design of H, V single-polarized omni-directional antennas or H / V dual polarized omni-directional antenna.

Description

【Technical field】 [0001] The present invention relates to the communication field, in particular to a MIMO omnidirectional array antenna beamforming method and technology suitable for 5G applications. 【Background technique】 [0002] In engineering, the simpler something is, the more useful it is. The omnidirectional antenna is the most primitive, simplest, and most valuable type of antenna family. First of all, horizontal omnidirectional radiation is the most significant feature of omnidirectional antennas, and it happens to be the most required feature of wireless communication. In a wireless communication system, since the mutual positions of the transmitting station and the receiving device are not fixed, both parties need to install omnidirectional antennas to ensure that the link can still be kept open when they are in any orientation relationship. Secondly, the omnidirectional antenna has the natural advantages of miniaturization and low cost, easy to install, easy t...

AI Technical Summary

Problems solved by technology

However, the implementation of beamforming by omnidirectional antennas will encounter challenges such as low gain, few shaped beams, complex algorithms, strong coupling of array elements, and little experience for reference.

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