Dual-polarized broadband antenna radiation device

Abstract

A dual-polarized broadband antenna radiation device belongs to the technical field of mobile communication base station antennas and comprises a feeding connection seat, a group of radiating element arms and a feeding mechanism, wherein a feeding mechanism cavity is formed in the center of the feeding connection seat; the radiating element arms are distributed around the feeding connection seat; the feeding mechanism is inserted in the feeding mechanism cavity. The dual-polarized broadband antenna radiation device is characterized in that each radiating element arm comprises a first oscillator arm, a second oscillator arm and a radiating arm, wherein one ends of the first and second oscillator arms are connected with the top of the feeding connection base; the other ends of the first and second oscillator arms extend away from the feeding connection seat; one end of the radiating arm is connected with the other end of the first oscillator arm to form a first expansion end; the other end of the radiating arm is connected with the other end of the second oscillator arm to form a second expansion end; the first oscillator arm, the second oscillator arm and the radiating arm form a space which serves as a hollow cavity; the hollow cavity is rhombus-shaped; hollow gaps are trapezoid. The dual-polarized broadband antenna radiation device has the advantages that current distribution on the radiating element arms can be changed; the impedance change of the radiating element arms is slowed down; the weight is reduced and raw materials are saved.

Description

technical field [0001] The invention belongs to the technical field of mobile communication base station antennas, and in particular relates to a dual-polarized broadband antenna radiation device. Background technique [0002] The dual-polarized broadband antenna radiating device is usually called the dual-polarized broadband antenna radiating unit, and there is no lack of technical information about this antenna in the published Chinese patent documents, such as the typical invention patent application publication number CN102157783A recommending "double Polarized broadband radiating unit and array antenna", has two groups and each group has a pair of radiating unit arms, and each radiating oscillator arm is fan-shaped; the authorized announcement number CN203013922U provides "ultra-wideband dual-polarized base station antenna radiating unit", which discloses There are two pairs of four radiating unit arms, and each radiating unit arm is generally in the shape of a hollowe...

AI Technical Summary

Problems solved by technology

However, there are disadvantages in the following three aspects: First, due to the unreasonable structure of the radiation unit arm, the current distribution on the radiation unit arm cannot achieve the desired effect, which is specifically manifested in the extension of the impedance bandwidth of the radiation unit arm The effect is poor, that is, the effect of widening the impedance bandwidth is poor; secondly, because the shape of the hollow gap between the adjacent radiating unit arms is unreasonable, it is not enough to make the impedance of the radiating unit arms change with the frequency. Matching is achieved in a wide frequency range, which suppresses the bandwidth of the radiating unit arm; third, due to the unreasonable structure of the radiating unit arm, the weight is large, which not only wastes materials, but also increases manufacturing costs

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