Phase shifter and base station antenna

Abstract

The invention provides a phase shifter. The phase shifter comprises: at least two phase shifting assemblies, wherein each phase shifting assembly comprises a substrate, a phase shifting plate, a main feeder line and a branch feeder line, the phase shifting plate, the main feeder line and the branch feeder line are all arranged on the substrate, the main feeder line is correspondingly provided with a main feed port, the branch feed line comprises at least one arc-shaped line, two ends of the arc-shaped line are respectively and correspondingly provided with a branch feed port, and a phase balance plate circuit is arranged between the at least one arc-shaped line and the branch feed port at one end or two ends of the arc-shaped line; and a fixing assembly, wherein the at least two phase shifting assemblies are respectively fixed on the fixing assembly. The invention also provides a base station antenna. Therefore, according to the phase shifter, the phase balance plate circuit and a traditional phase shifter feed network are integrally designed, so the overall balancing of the phase and the stability of a structure are facilitated, occupied space is small, and phase configuration is more flexible.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a phase shifter and a base station antenna. Background technique [0002] With the development of mobile communication technology, the 5G system has become more and more popular, and the density of base stations has also increased. In order to save the number of antennas for a single base station, operators often use multi-beam antennas, which can cover with high gain. larger area. Moreover, in order to solve the coverage problem of the base station antenna, the downtilt angle of the beam of the base station antenna is usually adjusted. The downtilt angle of the beam can be downtilted mechanically or electrically. The electronically adjustable antenna is becoming more and more popular, and the phase shifter is the most core component of the electronically adjustable antenna. [0003] For multi-beam antennas, there should be at least two phase shifters corresponding...

AI Technical Summary

Problems solved by technology

Existing phase shifters usually use phase-balanced circuit boards and feed networks stacked or arranged side by side, resulting in a large space occupied by the overall phase shifter, which is not conducive to the compact layout design inside the antenna

In addition, the structure of the phase balance board circuit is relatively fragile when it is placed alone, and it needs to be equipped with a separate installation support for fixed welding, which is not conducive to the overall balance, and it takes up a lot of space and has poor structural stability.

[0004] In summary, there are obviously inconveniences and defects in the actual use of the existing technology, so it is necessary to improve

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