Wideband double polarized antenna oscillator structure

Abstract

This invention discloses a wide band dual polarized antenna array structure including: a surface radiation unit, a medium board, a feed bracket and a reflection board, in which, the surface radiation unit includes half-wave array arms and an end connection unit and the array arms are connected by the end connection unit, the feed bracket is placed between the medium board and the reflection board, the upper part contacts with the radiation unit via the medium board by its projection part, the lower part contacts with the reflection board by its projection part, the top of the inner conductor of the feed bracket is welded to the arrays of the surface radiation unit and the bottom passes through the gap of the reflection board but not contacts with it and welded with the feed network of the array, the hump part of the top of the outer conductor of the bracket is welded with the radiation unit, the bottom is welded with the reflection board so as to play the role of a choke.

Description

Technical field [0001] The invention relates to the field of mobile communication base station antennas, in particular to a dual-polarization antenna element and a radiation unit thereof. Background technique [0002] At present, the elements of the dual-polarization antenna mostly adopt two pairs of orthogonal half-wave oscillator structures. This structure relatively intuitively realizes the field orthogonality of two pairs of half-wave elements, thereby realizing dual polarization. The ideal orthogonality is very important for the polarization separation of the two polarizations of the dual-polarization element and the efficiency of the dual-polarization antenna. The quality of its orthogonality is usually evaluated by cross-polarization resolution or cross-polarization ratio . The current popular evaluation indicators are: spindle cross-polarization ratio and ±60° cross-polarization ratio, and the typical value of the spindle is required to be higher than 20dB, and it ...

AI Technical Summary

Problems solved by technology

The current popular evaluation indicators are: spindle cross-polarization ratio and ±60° cross-polarization ratio, and the typical value of the spindle is required to be higher than 20dB, and it is higher than 10dB at ±60°. Most of the relatively simple oscillator structures are due to poor processing or feeding. Reasons such as balance cause the spatial radiation of the element radiation unit to be unbalanced, and the element alone cannot meet the requirements for cross-polarization, and the cross-polarization characteristics are poor

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