针对目前飞机系统中已有机载天线阵的副瓣性能指标无法满足系统电磁兼容特性，详细介绍了一种低副瓣C波段圆极化天线阵的结构设计和调试过程，提出一种全新消减天线单元间互耦的散射体设计方法和一种全新结构的三路功分器，通过构建相应的系统模型、仿真实验以及实物测试，验证了该设计的优越性，机载天线阵第一副瓣相对主瓣增益小-20 dB，有效提升了机载天线的电磁兼容特性。%The sidelobe performance of current airborne antenna array in the aircraft systems cannot meet the electromagnetic compatibility characteristics. The structural design and debugging process of a low sidelobe C-band circularly polarized antenna array are introduced in detail. A new design method of scatterer to abate the mutual coupling between the antenna elements and a new struc-ture of three-way splitters are proposed. The superiority of this design is verified by constructing the appropriate system model,simula-tion experiment and physical test. The first sidelobe gain is -20dB smaller than the main lobe. The electromagnetic compatibility char-acteristics of airborne antenna is effectively improved.
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