3G broadband dual-polarized antenna array and manufacturing method thereof

Abstract

The invention provides a 3G broadband dual-polarized antenna array, which comprises a reflecting plate, a high-frequency dielectric substrate, a high-frequency surface radiation unit, a high-frequency feed board and a high-frequency support. The 3G broadband dual-polarized antenna array is characterized in that the high-frequency dielectric substrate is fixed on the high-frequency feed board, the high-frequency surface radiation unit adopts a metal conductor and is attached onto the high-frequency dielectric substrate, and the high-frequency feed board is fixed on the reflecting plate through the high-frequency support; and a low-frequency oscillator arm and a low-frequency feed piece are fixed on the reflecting plate, and a high-frequency oscillator is surrounded by a high-frequency shielding coil and is welded on the reflecting plate via welding. The manufacturing method comprises: (1) manufacturing of molds of each component of a main body; (2) casting formation; and (3) assembly of each component. The 3G broadband dual-polarized antenna array has a gain, a cross polarization ratio, a front-to-back ratio, a sidelobe energy ratio, a dual polarization degree of coincidence, so that broadband coupling of the performance of base station antennas can be realized, and the feed can be realized through the feed piece. Moreover, the structure is simple, the number of components is small, and the production and assembly can be facilitated.

Description

technical field [0001] The invention relates to the field of mobile communication base station antennas, in particular to a coaxial dual-frequency dual-polarization antenna and a radiation unit thereof, in particular to a 3G broadband dual-polarization antenna element and a manufacturing method of the 3G broadband dual-polarization antenna element. technical background [0002] At present, the dual-frequency dual-polarization electronically adjustable antenna is an electronically adjustable downtilt antenna that can cover two frequency bands (806-960MHz and 1710-2170MHz). Its use can greatly improve network capacity and greatly Reduce base station costs, etc. In areas with high traffic such as urban areas, the advantages of using dual-band and dual-polarized antennas are particularly obvious. In areas with high traffic such as urban areas, the advantages of using dual-band and dual-polarized antennas are particularly obvious. At the same time, facing the shortage of site r...

AI Technical Summary

Problems solved by technology

However, the design of dual-frequency dual-polarized antennas is difficult, and the mutual coupling between the two frequencies is required to be low, that is, the inter-band isolation is required to be above 30dB

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