一种小型化宽频双极化基站天线辐射单元的仿真设计

A miniaturized broadband dual-polarized dipole base station antenna

基于设计一种小型化的宽频双极化基站天线辐射单元的目的,采用减少辐射单元尺寸的方法实现小型化,应用阻抗匹配优化辐射单元的电压驻波比,利用局部不对称设计等优化方法提高交叉极化比和隔离度等参数。通过HFSS软件对天线性能进行了仿真,给出了1.71~2.69 GHz频段的驻波比和隔离度随频率变化的曲线,以及辐射方向图特性参数,最终得到的辐射单元尺寸比常见的宽频双极化基站天线辐射单元尺寸减少32%且性能完全符合移动通信行业标准。

In the paper, a design of a miniaturized broadband dual-polarized dipole base station antenna is presented. The design reduces the radiation unit size to achieve miniaturization, and optimizes the radiation unit voltage standing wave ratio （VSWR） with impedance matching, and adopts partial asymmetry design to improve the isolation and the cross polarization ratio. The paper uses HFSS to simulate the design. The paper presents the VSWR and the isolationcurve in the frequency range of 1.71-2.69 GHz, and presentsradiation pattern characteristics parameters. As a result, the size of the design is reduced by 32% in the same industry standard for mobile communication.