可编程超表面实现双极化独立多波束反射阵天线设计

A Dual-Polarized Independent Multi-Beam Reflectedarray Design Based on Programmable Coding Metasurface

多波束反射阵天线因其制备简单、成本低、波束调控灵活等优势而备受关注。基于极化复用的可编程超表面提出了一种双极化通道独立波束动态调控的多波束反射阵天线设计方法,并结合方向图快速计算与优化算法,实现了快速的编码序列优化与方向图预测。理论分析与全波仿真分析结果显示,反射阵天线在双极化通道下具有良好的辐射性能,主瓣辐射方向与理论计算结果一致。作为实验验证,加工了实物样件并在标准微波暗室中进行了测试。测试结果与仿真分析结果吻合良好,证明独立波束调控的双极化反射阵天线具有多通道电磁波辐射能力,有望应用于无线通信与多目标雷达系统中。

Being simple in preparation,low at the costs,and flexible in beam control,multi-beam reflected array is very popular.In this paper,a design method of dual-channel independent multi-beam reflected array is proposed based on the polarization multiplexing meta-surface,and radiation pattern fast prediction is utilized together in combination with the algorithm to calculate optimal phase configuration.Specifically,the independent dual-and the multi-beam manipulations in dual-polarization are analyzed theoretically,and simulated by the electromagnetic software.The reflected array presents good radiation performance,consisting with the simulations especially in main lobe.As an experimental verification,a prototype is fabricated and tested in a standard microwave anechoic chamber,and the measured results are in accord with the simulations.The proposed reflected array has promising ability to generate the arbitrary and independent multi-beams,largely enhancing the information capacity of the meta surfaces,offering untapped potentials in wireless communication systems and multi-target radar systems.Being simple in preparation,low at the costs,and flexible in beam control.