基于平面相控阵天线的低副瓣优化算法  

Low Sidelobe Optimization Algorithm Based on Planar Phased Array Antenna

作　　者：王耀宇 程潇鹤 姚远[1] WANG Yaoyu;CHENG Xiaohe;YAO Yuan(School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]北京邮电大学电子工程学院,北京100876

出　　处：《东莞理工学院学报》2025年第1期96-99,共4页Journal of Dongguan University of Technology

摘　　要：平面超表面相控阵天线可以有效地解决经典相控阵剖面较高的问题,然而,受量化精度限制,低比特平面超表面天线副瓣电平相对较高。针对这一问题,提出了一种基于固定相位分布的综合优化算法,利用遗传算法,对固定预置相位以及单元可重构相位进行综合迭代优化。基于算法优化得到的相位分布,以2比特平面超表面天线作为原型样机在电磁仿真软件中进行了全波仿真验证,在±45°的波束扫描范围内实现了低于-11.9db的副瓣电平。仿真结果表明,提出的优化算法拥有较好的抑制副瓣效果。Planar metasurface phased array antennas can effectively reduce the profile height of phased arrays.However,due to the limitation of quantization accuracy,the side lobe level of low-bit planar metasurface antennas is relatively high.To address this problem,an hybrid optimization algorithm based on a fixed prephase distribution is proposed.Based on the phase distribution optimized by the algorithm,a 2-bit planar metasurface antenna was taken as the prototype and full-wave simulation verification was conducted in electromagnetic simulation software.The prototype achieves a±45°beam scanning range,with the side lobe level below-11.9 dB.The simulation result shows that the proposed optimization algorithm has a good side lobe suppression effect.

关 键 词：低副瓣 优化算法 相控阵 

分 类 号：TN821.8[电子电信—信息与通信工程]