一种三维角度选择表面天线罩及基站天线

By designing a surface radome with three-dimensional angle selection, and utilizing a stacked slotted line structure and equivalent circuit model, the problems of large period and low angle sensitivity of existing radome units are solved. This achieves high angle sensitivity and a simplified structure, facilitating mass production and improving the signal-to-noise ratio and anti-interference capability of base station antennas.

CN122118361BActive Publication Date: 2026-07-17ZHONGTIAN COMM TECH CO LTD +2

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHONGTIAN COMM TECH CO LTD
Filing Date
2026-04-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing angle-selective surface radome elements suffer from problems such as large period, low angle sensitivity, and complex structure, making them difficult to implement.

Method used

A three-dimensional angle-selective surface radome design is adopted. By alternately setting the inductive coupling region of the metal layer and the slot line resonator on the dielectric substrate, a stacked slot line structure is formed. Combined with the equivalent circuit model, the longitudinal propagation path and coupling characteristics of electromagnetic waves are optimized, achieving high angle sensitivity and simplified structure.

Benefits of technology

It significantly reduces cell period dependence, improves angle sensitivity, simplifies structural design, facilitates mass production, and enhances the signal-to-noise ratio and anti-interference capability of base station antennas.

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Abstract

发明公开了一种三维角度选择表面天线罩及基站天线,属于电磁场与微波技术领域。该天线罩由多个周期性排布的层叠槽线单元构成,每个单元包括介质基板及一侧的金属层;金属层上设有三个槽线谐振器和四个感性耦合区,沿第一方向交替排列,形成三维层叠槽线结构。该结构可等效为三阶感性耦合带通滤波网络,其中槽线谐振器等效为半波长传输线,感性耦合区等效为倒置变换器。当天线罩正入射时呈现三阶带通响应,在斜入射时通带随角度偏移,实现高角度敏感度的角度选择功能。本发明具有单元周期小、结构简单、易于制造等优点,适用于5G / 6G基站抗干扰场景,能有效抑制旁瓣干扰并增强主瓣信号接收。
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