由大量阵元组成的阵列天线广泛应用于现代雷达装备, 实际应用中阵列天线不断出现失效阵元。针对这一问题, 分析了不同规模阵列天线中不同数目阵元失效概率, 设计了不同失效阵元组合下阵列天线性能分析流程。以不同规模的Chebyshev直线阵和Taylor直线阵为例, 分析了阵列天线最大副瓣电平、平均副瓣电平、半功率波瓣宽度、第一零点波瓣宽度及方向系数与失效阵元激励、位置之间的关系, 该分析结果为具有失效阵元的阵列天线自修复奠定了基础。

Array antennas consisting of a large number of array elements are widely used in modern radar equipment.In actual application,the array antennas are constantly experiencing failed elements.The failure probability of array elements of different numbers in array antennas of different sizes is analyzed,and the performance analysis process of array antennas under different combination modes of failure elements is designed.Taking the Chebyshev linear array and the Taylor linear array of different scales as examples,the relationship of maximum sidelobe level,average sidelobe level,half-power beamwidth,first nulls beamwidth,directivity coefficient of the array antenna with the failed elements amplitude and position is analyzed.The analysis results provide a basis for self-repairing of array antennas with failed array elements.