Broadband dual polarization radiation unit

Abstract

The invention discloses a broadband dual polarization radiation unit comprising a radiator and balance feeder equipment. The radiator includes four radiation fins and four support bars. The four radiation fins, which are on a same plane, are arranged in an array with two rows and two columns and are distributed in a mode in which two and two are symmetrical, so that two pairs of dipoles of orthogonal polarization are formed. Each of the radiation fins consists of an outer ring frame and an inner ring frame, wherein the outer ring frame and the inner ring frame are at a same plane; the inner ring frame is nested inside the outer ring frame is connected with the outer ring frame. And the four support bars are respectively connected with the four radiation fins in one-to-one correspondence mode; and corresponded tangential angles are formed on all the radiation fins at connection points. Besides, the balance feeder equipment is arranged in the central portion of the radiator and is used for carrying out feeding on the two pairs of dipoles. According to the invention, the provided broadband dual polarization radiation unit has advantages of wide frequency band, stable broadband characteristic and simple structure.

Description

technical field [0001] The invention relates to the technical field of mobile communication antennas, in particular to a broadband dual-polarization radiation unit. Background technique [0002] With the development of communication technology, mobile communication is ready to enter the fourth generation mobile communication network (4G era). Under the new-generation mobile communication system, various communication standards require mobile communication antennas to be shared by multiple systems to save site installation resources for base stations and reduce network construction costs. The market needs an antenna with a frequency of 1710MHz-2690MHz, a bandwidth of 44.5%, and requires stable broadband characteristics in various indicators, such as impedance matching bandwidth, half-power beam width, gain, front-to-back ratio, and cross-polarization ratio etc., so it is more difficult to design. The development of broadband antenna unit is the basis of base station antenna...

AI Technical Summary

Problems solved by technology

[0003] The relative bandwidth provided by the existing dual-polarized antenna elements is generally lower than 44.5%, and the bandwidth of the antenna array thus formed is also limited, making it difficult to meet market demand. For example, the antenna element disclosed in Chinese patent CN200910036577.7 has a relative bandwidth of Only 33%

[0004] However, a few antenna oscillators that can meet the bandwidth requirements, such as the dual-polarized broadband radiation unit disclosed in Chinese patent CN201110064485.7, have a relatively complicated structure, which is not conducive to production.

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