Base station antenna

By optimizing the layout of the radiation element array in the base station antenna, adopting multiple radiation element subarrays and through specific electrical connections and arrangement orders, the problems of mutual coupling and equivalent phase center offset of adjacent linear arrays in the prior art are solved, and better RF performance is achieved.

CN112133999BActive Publication Date: 2025-03-25OUTDOOR WIRELESS NETWORKS LLC
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Patent Information

Application Number
CN201910546126.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-06-24
Publication Date
2025-03-25
Estimated Expiration
2039-06-24

AI Technical Summary

Technical Problem

In the closely spaced linear array of radiation elements, the coupling of adjacent linear arrays increases, resulting in a decrease in copolarization performance. At the same time, the staggered arrangement of radiation elements arrays leads to an equivalent phase center offset, resulting in a degradation of the pattern distortion and radio frequency performance.

Method used

By optimizing the radiating element array layout of the base station antenna, a plurality of radiating element linear arrays are employed, each array comprising a plurality of first radiating element subarrays composed of n adjacent radiating elements and a second radiating element subarrays composed of m adjacent radiating elements, wherein n is greater than m. Each sub-array of radiation elements is electrically connected to the output of the phase shifter and is aligned with a specific arrangement order and phase, reducing the staggering of the phase center.

Benefits of technology

While maintaining the advantage of staggered arrangement of the radiation element array, staggering of the phase center is reduced or eliminated, and the directional pattern and radio frequency performance of the base station antenna are improved.

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Abstract

This invention relates to a base station antenna, comprising: a plurality of first radiating elements arranged in a vertically extending first array; and a plurality of second radiating elements arranged in a vertically extending second array, wherein each second radiating element is vertically offset relative to each first radiating element; wherein the phase center of a first subarray of first radiating elements in the azimuth plane is substantially the same as the phase center of a corresponding third subarray of second radiating elements in the azimuth plane, and wherein each first subarray of first radiating elements has a first number of first radiating elements, and each third subarray of second radiating elements has a second number of second radiating elements, the first number being different from the second number. This effectively improves the radiation pattern of the base station antenna.
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