A 5g sheet metal forming dual-band filter antenna

Abstract

The invention discloses a 5G sheet metal forming dual-band filter antenna, which includes a reflector, a power distribution network component, and a radiation sheet that is engaged on the top of the power distribution network component. On the board, the power division network component includes a first power division unit and a second power division unit that are assembled relatively, and a signal isolation cavity formed around them. The first power division unit and the second power division unit are respectively provided with at least two groups of second power division units. A split resonant ring and a second split resonant ring; the present invention solves the problem of band filtering of the filter by designing a power division network component with a three-dimensional structure and erecting it with a snap-fit ​​support component to form an independent signal isolation cavity. The centralized integration of the external suppression capability can not only improve the signal suppression capability in the dual-band band range, but also reduce the number of settings of the first split resonant ring and the second split resonant ring, reduce production costs, and improve the positive and negative polarization. The isolation degree has the advantages of simple structure and low loss.

Description

technical field [0001] The invention relates to the technical field of filter antennas, in particular to a 5G sheet metal forming dual-band filter antenna. Background technique [0002] The active antenna processing unit (AAU) of the 5G base station mainly includes large-scale Massive MIMO antennas, filters, active components and other components, where the antenna and filter are two independent components. The filter generally adopts a metal cavity filter or a ceramic filter. Its function is to suppress the signal outside the working frequency band of the antenna and ensure the transmission quality of the signal in the working frequency band. The antenna and the filter are usually connected by a radio frequency connector. In order to ensure the out-of-band suppression index of the filter in a smaller range, the filter usually needs to increase the number of resonant cavities, which directly leads to an increase in the cost of the filter and an increase in insertion loss. ...

AI Technical Summary

Problems solved by technology

In order to ensure the out-of-band rejection index of the filter in a smaller range, the filter usually needs to increase the number of resonant cavities, which directly leads to an increase in the cost of the filter and an increase in insertion loss

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