Interwoven and polarized multi-beam antenna

Abstract

The invention discloses an interwoven and polarized multi-beam antenna, comprising at least one dual-polarized antenna element, a first Butler matrix and a second Butler matrix; the dual-polarized antenna element comprises a positive 45-degree polarized first antenna element and a negative 45-degree polarized second antenna element; the first Butler matrix is connected with the first antenna element, so that the first antenna element transmits first target beams; and the second Butler matrix is connected with the second antenna element, so that the second antenna element transmits second target beams. The first target beams and the second target beams are staggered, and the polarization characteristics of any two adjacent first target beams and second target beams are different, so that the complexity, loss and cost of realizing the Butler matrixes can be reduced effectively, and the interferences between adjacent multiplex beams can be reduced effectively.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a multi-beam antenna with interleaved polarization. Background technique [0002] With the continuous upgrade of the mobile communication system, new index requirements are put forward for the antenna, such as multi-beam, miniaturization, etc., which have become the main factors of modern antenna design. The multi-beam network is the main technology to realize the multi-beam antenna by using space selectivity. The space selectivity method can bring two benefits: one is to carry out selective transmission and reception, which can reduce the interference and interference to neighboring cells. interference; the second is to form spatial multiplexing among multiple beams. [0003] The multi-beam antenna system consists of two parts, one part is a dual-polarization array composed of dual-polarization antenna elements, and the other part is a Butler matrix, and the dual-polariza...

AI Technical Summary

Problems solved by technology

[0007] The simultaneous cross-polarized multi-beam system belongs to an orthogonal system, that is, the direction of the maximum value of each beam of each polarization is basically the zero point or side lobe of other beams of the same polarization, and the main problem of the simultaneous cross-polarized multi-beam system The reasons are: first, when the number of multi-beams formed by this system is large, the number of multi-beam matrices increases. For example, to form 6 beams, a three-level network is required. The increase in the number of network levels will greatly increase the processing difficulty and network Loss; Second, the side lobes are not easy to reduce. Butler-type matrices generally have higher side lobe levels in the two most side beams, thus increasing the interference between adjacent multiplexed beams

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