Radiation unit and base station antenna

Abstract

The invention provides a radiation unit and a base station antenna. The radiation unit comprises a substrate and a microstrip line. Wherein the substrate comprises a main board body, a plurality of bending units and a plurality of feed sheets; the main board body is located in the center area of the substrate; the plurality of bending units are located at the edge part of the substrate and are distributed in a polarized orthogonal manner; the bending units are connected with the edge of the main board body, and the included angles between the bending units and the main board body are a first preset included angle; a through hole is formed in the main board body; the feed sheets are connected with a connecting part between the through hole and the main board body, and included angles between the feed sheets and the main board body are a second preset included angle; and the plurality of feed sheets are connected through the microstrip line and are used for feeding the radiation unit. According to the invention, the structure of the substrate is simply optimized, the cross polarization ratio of the radiation unit can be effectively improved, additional materials and additional occupation of space resources of the antenna are avoided, and the radiation unit is simple to operate, low in cost and simple in structure.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a radiation unit and a base station antenna. Background technique [0002] Polarization refers to the polarization of the radiated electric wave in the direction of maximum radiation, which can be defined as the trajectory of the endpoint movement of the electric field vector in the direction of maximum radiation. Due to the physical structure of the antenna itself, the electric field vector of the far field radiated by the antenna not only includes its own motion direction, but also has a component in its orthogonal direction, that is, the cross-polarization of the antenna. Cross-polarization is one of the most important parameters in communication base station antennas, usually called cross-polarization discrimination. [0003] Generally, cross-polarization refers to the polarization component orthogonal to the main polarization, which generally appears in dual-po...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a radiating unit and a base station antenna, which are used to solve the defect of adding enclosures around the antenna in the prior art and needing to increase additional costs, so as to improve the cross-polarization ratio of the antenna while reducing costs

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