Low-frequency radiation unit and antenna

Abstract

The invention provides a low-frequency radiation unit and an antenna. According to the technical scheme, a low-frequency radiation unit comprises four cross-shaped vertical radiation arms, a wave filtering section used for reducing interference on a high-frequency radiation unit is connected between the ends of every two adjacent radiation arms, each wave filtering section comprises a first U-shaped line and a first transition line used for impedance matching, and the first U-shaped lines and the first transition lines are distributed alternately; an opening is formed in one end of the radiation arm, second transition lines and second U-shaped lines are arranged on the two sides of the opening of the radiation arm respectively, the second transition lines are used for impedance matching, the second transition lines and the second U-shaped lines are distributed alternately, and the radiation arms are connected with the first U-shaped lines at the end of the wave filtering sections through the second transition lines. The first U-shaped lines and the second U-shaped lines are correspondingly formed on the wave filtering sections and the radiation arms respectively, so that resonancebetween the high-frequency radiation unit and the low-frequency radiation unit is reduced, and interference of the low-frequency radiation unit to the high-frequency radiation unit is reduced.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a low-frequency radiation unit and an antenna. Background technique [0002] With the development of wireless technology and the introduction of new communication spectrum and communication standards, multi-system shared antennas that support more frequency bands and more standards have gradually become the mainstream products required by operators. Antenna technology that supports ultra-multiple systems and ultra-multiple frequency bands has become a research hotspot for developers in the base station antenna industry. [0003] When high and low frequency mixed arrays are formed, nested arrays and sidebyside arrays are the two existing mainstream array solutions. The Sidebyside array is to distribute the high-frequency radiation units on the side of the low-frequency radiation units to form a multi-row array combination. The sidebyside array has a certain index ad...

AI Technical Summary

Problems solved by technology

However, when the low-frequency radiation unit and the high-frequency radiation unit form an array sidebyside, there is mutual interference between the two frequency bands, resulting in the problems of increased cross-polarization of the pattern, beam deflection, and beam distortion.

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