Dimension reduction multi-beam antenna system

Abstract

The invention discloses a dimension reduction multi-beam antenna system. The system is characterized in that: an N / n-in N-out (e.g., two-in eight-out) feed network is designed between radio frequency ports and an antenna, an antenna system architecture is optimally designed, based on the design, the number of the radio frequency ports can be reduced to 1 / n (e.g., 1 / 4) of an existing scheme, and antenna beam dimension reduction is correspondingly carried out, so that unnecessary channel resource waste is reduced through dimension reduction, and the formed beam direction can meet the predetermined space coverage requirement of the pitching surface. Therefore, the dimension reduction multi-beam antenna system greatly reduces the number of radio frequency links, correspondingly reduces the dimension of matrix operation in rear-end signal processing, and reduces the calculation power consumption. In addition, the power input state of each group of beams can be independently adjusted in real time according to user distribution, and the power expenses in a few-user or no-user scene within the coverage range of a certain beam cluster can be correspondingly reduced.

Description

technical field [0001] The application belongs to the technical field of microwave engineering, and in particular relates to a multi-beam antenna system with reduced dimensionality. Background technique [0002] MIMO (Multiple-Input Multiple-Output) technology refers to the use of multiple transmitting antennas and receiving antennas at the transmitting end and the receiving end, so that signals are transmitted and received through multiple antennas at the transmitting end and the receiving end, thereby Improve communication quality. As the key core technology of 5G (5th-Generation, fifth-generation mobile communication technology), massive MIMO technology doubles the system capacity without occupying more spectrum resources by using a larger number of antenna units. [0003] In a traditional communication base station, the back end of each antenna unit needs to be connected to the corresponding radio frequency link, which includes radio frequency devices such as phase shif...

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Problems solved by technology

[0004] In recent years, multi-beam antenna technology has attracted attention and research because it can reduce the radio frequency complexity in massive MIMO systems. However, according to channel analysis in ubiquitous scenarios, the inventors found that in the base station communication scenario with full coverage of pitch space, More than half of the radiation beams point to redundant spaces where there are almost no communication links, resulting in unnecessary waste of channel resources

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