一种新型宽频带圆极化球螺旋馈源

A novel feed of broad-band circularly polarized spherical helical

提出了一种新型宽频带圆极化球螺旋馈源,给出了球面螺旋的几何关系和理论分析,得到了辐射场的解析关系和不同模式下远场的表达式。运用该理论进行工程设计并进行了实际测试,测试结果与理论分析的吻合,验证了理论分析和工程设计的正确性。与传统圆极化馈源相比,该馈源具有结构简单、频带宽、体积小等优势。

A novel feed of broad-band circularly polarized spherical helical is presented. Compared with conventional circularly polarized feed, the novel one has many advantages, such as simple structure, broadband, small size and so on. In the investigation, the geometric relation of the spherical helical is given, by theoretical analyse the analytic expression of radiation field and far-field for different modes. Based on these theories, the feed for engineer is designed and tested. The results prove the approach could be used to the real engineering design and calculation.