一种超宽频带多模喇叭的设计  

Design of a Wide-Band Multi-Mode Horn

作　　者：张宇[1] Zhang Yu(No.39 Research Institute of CETC, Xi＇an 710065 China)

机构地区：[1]中国电子科技集团公司第39研究所,西安710065

出　　处：《测控与通信》2018年第3期1-8,44,共9页

摘　　要：采用模式匹配法结合优化算法为新疆天文台110m天线研制出1种工作频带为4-12GHz的三倍频多模喇叭，该喇叭由225个圆波导台阶组成，除了加工制造易于实现之外，与常规多模喇叭以及波纹喇叭相比最为突出的优点是在超宽频带内具有等化的辐射方向图和低交叉极化，非常适合用作超宽频带射电天文观测天线的高效率馈源或者用于其他需要超宽频带设计的天线。在如此宽的频带内实现多模喇叭，目前国内尚未见到相关的研究报道。In this paper, the theory of mode-matching technique （MMT） and optimization algorithm are used to develop a triple frequency multi-mode horn for the ll0-meter antenna of XinJiang Observatory with a working band of 4-12 GHz .This horn is composed of 225 circular waveguide steps, which is easy to manufacture, and compared with traditional multi-mode horn and corrugated horn, it has a prominent advantage of equating radiation pattern and low cross polarization in ultra wide band. This horn is suitable for high efficiency feed for ultra wide band radio astronomy observation antenna or for other antenna designed for ultra wide band. The multi-mode horn is realized in such a wide band, and there is no relevant research report in China yet.

关 键 词：模式匹配法 广义S矩阵 多模喇叭 优化算法 

分 类 号：TN82[电子电信—信息与通信工程]