随机误差对模块化阵列天线副瓣的影响

Effects of random errors on the sidelobe level of a module array antenna

推导了相位误差、单元位置误差和子阵位置误差的取值范围与模块化阵列天线副瓣累积概率的关系,以及单元位置误差、子阵位置误差与整体位置误差的关系。通过实例说明,激励幅相误差、单元位置误差和子阵位置误差,对实现超低副瓣都是至关重要的。

In this paper, a relationship between the cumulative probability of sidelobe of a module array antenna and the range of element position errors, subarray position errors and the phase errors of each element is discussed. The expression of the relationship between element position errors, subarray position errors and total position errors is derived. The computation and simulation results show that the phase error and amplitude error in each element, element position error and subarray position error are all very critical for an ultra-low sidelobe array antenna with subarrays.