Multi-channel power equalizer

Abstract

The invention discloses a multi-channel power equalizer which comprises a shell and a distribution board arranged in the shell. The distribution board is provided with a first radio frequency input interface, a second radio frequency input interface, a first radio frequency output interface, a second radio frequency output interface and an antenna interface. The distribution board is provided witha branch output coupler and a radio frequency power amplifier. The first radio frequency input interface is connected in series with at least three branch output couplers and then connected with thefirst radio frequency output interface. The second radio frequency input interface is connected in series with at least three branch output couplers and then connected with the second radio frequencyoutput interface. Each branch output coupler is correspondingly connected with one radio frequency power amplifier in a one-to-one way. Each radio frequency power amplifier is correspondingly connected with one antenna interface in a one-to-one way. The multi-channel power equalizer realizes the combination of transmission and suitable power distribution, enables the power of antenna array nodes to be consistent, realizes uniformity of field strength coverage and also reserves the output interface for interconnection in advance.

Description

technical field [0001] The invention relates to the technical field of couplers, in particular to a multi-channel power equalizer. Background technique [0002] At present, a large number of directional couplers are used in the small base station 5G indoor coverage distribution system launched by equipment manufacturers. The directional coupler mainly distributes the power in the main circuit to the branch circuit according to the coupling degree ratio, and then transmits it to the antenna. It mainly solves the problem of single channel distribution, so the application is limited, and there is a branched branch system in reality. Construction and upgrading are difficult and expensive, especially the technical problems that the symmetrical wiring of multi-channel radio frequency transmission lines cannot be achieved, and the amplitude balanced transmission required by 2T2R / 4T4R and the amplitude consistency required by antenna nodes cannot be guaranteed. Contents of the inv...

AI Technical Summary

Problems solved by technology

The directional coupler mainly distributes the power in the main circuit to the branch circuit according to the coupling degree ratio, and then transmits it to the antenna. It mainly solves the problem of single channel distribution, so the application is limited, and there is a branched branch system in reality. Construction and upgrading are difficult and expensive, especially the technical problems that the symmetrical wiring of multi-channel RF transmission lines cannot be achieved, and the amplitude balance transmission required by 2T2R / 4T4R and the amplitude consistency required by antenna nodes cannot be guaranteed.

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