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提出了一种基于混合遗传算法的新型相控阵天线多阶混合馈电技术,描述了在有限TR组件数量和品种的情况下,可实现相控阵天线低副瓣的技术原理和仿真实例。仿真实例表明,多阶混合馈电阵比密度加权阵和多阶振幅量化阵具有更优的技术指标,且参数调节更具有灵活性,可大大减少相控阵天线成本。且多阶振幅量化阵仅是多阶混合馈电阵的一个特例。此外,对于同时存在随机幅相误差和单元(或TR组件)失效而引起的峰值副瓣电平恶化情况也进行了统计分析。
A novel multiphase hybrid feed technology for phased array antenna based on hybrid genetic algorithm is proposed. The technical principle and simulation examples of low sidelobe of phased array antenna are described in the case of limited number and variety of TR components. The simulation results show that the multi-order hybrid feed-in has better technical indexes than density-weighted array and multi-order amplitude quantization array, and the parameter adjustment is more flexible and can greatly reduce the cost of the phased-array antenna. And multi-order amplitude quantization matrix is only a special case of multi-stage hybrid feedthrough. In addition, a statistical analysis of the deterioration of the peak sidelobe level caused by the simultaneous presence of random amplitude and phase errors and the failure of the cell (or TR device) was performed.