S波段低副瓣天线的分析与设计

Analysis and Design of an S-band Low-sidelode Antenna

研究了一种半波振子馈电的带圆片副反射面的抛物面天线。简要介绍了天线低副瓣的含义,并对该天线所使用的馈源的辐射特性进行了理论分析和电磁仿真。设计了一个成本低、体积小、结构简单、电性能良好的低副瓣抛物面天线。这种天线适用于生命探测雷达系统等需要的小尺寸低成本低副瓣天线的特殊场合。

The parabolic antenna fed with half-wave dipole, with circular disc short-focus parabolic reflector was studied. The meaning of low sidelobe antenna was briefly introduced. The radiation characteristics of feed source of the antenna was theoretically analyzed and electromagnetically simulated. A low sidelobe parabolic antenna was designed which was low cost, small size, simple structure, and good electrical properties. It can be applied to special occasions as life detection radar systems in need of low-cost and smallsize.