【作者】 强云飞； 汪伟； 伍瑞新；

【Author】 Yunfei Qiang;Wei Wang;Rui-Xin Wu;Nanjing University;Anhui Province Engineering Laboratory for Antennas and Microwave;

【机构】 南京大学； 安徽省天线与微波工程实验室；

【摘要】 本文提出了一种新型的适用于非对称天线阵面的幅度修正方法。通过简单循环求解修正后的幅度分布,无需借助复杂的优化算法就可以大幅改善非对称天线阵面的波瓣特性,避免对全阵面进行优化,大大降低了优化成本。通过模拟计算,采用本文所提出的幅度修正方法后,对于非对称天线阵面的和波束,降低了最大副瓣,最大值约7.3 dB,相应的方向性系数改善约0.69 dB;其差波束的最大副瓣降低最大值约10.7 dB,相应的差零深降低约28.2 dB。幅度修正后的天线阵面的波瓣特性改善非常明显,有效验证了本文提出的幅度修正方法的可行性,对于相控阵天线领域具有很好的工程应用价值。更多还原

【Abstract】 A novel amplitude correction method for asymmetric antenna arrays is proposed in this paper.This proposed method significantly enhances the lobing characteristics of asymmetric antenna arrays by iteratively solving for the corrected amplitude distribution in a simple loop,without relying on complex optimization algorithms.Additionally,it avoids optimizing the entire array,thereby significantly reducing optimization costs.Simulation results demonstrate that implementing our proposed correction method reduces the maximum sidelobe level of the sum beam by approximately 7.3 dB,improving the directional coefficient by about 0.69 dB.For the difference beam,the maximum sidelobe reduction reaches about 10.7 dB,with the null depth decreasing by approximately 28.2 dB.The enhanced lobing characteristics of the corrected antenna array are clearly evident,validating the feasibility of our proposed method.It holds significant engineering value for phased array antenna applications.更多还原