双层pillbox天线蝶形馈源研究  

Study on a bow-tie feed for dual-layer pillbox antenna

作　　者：冯奎胜[1,2] 李娜[2] 孟庆微[2] 许家栋[1] 张景伟[2] 

机构地区：[1]西北工业大学电子与信息学院,陕西西安710072 [2]空军工程大学信息与导航学院,陕西西安710077

出　　处：《电子技术应用》2014年第10期103-105,共3页Application of Electronic Technique

摘　　要：研究了双层pillbox天线一种新型的馈源结构。利用矢量有限元方法结合PML边界条件分析馈源腔内场分布和回波损耗,研究了不同反射板形状对腔体电场分布及照射角度的影响,优化设计了一种具有蝶形副反射板的馈源腔。在Ku频段,该馈源腔-3 dB波束宽度达到160°,与传统的馈源形式相比提高了馈源的照射角度,改善了口面的辐射效率。This paper presents a new feed for dual-layer pillbox antenna.The electric field distribution and return-loss of the feed cavity are analyzed by using vector finite-element method and PML absorption boundary condition.The effect of the different sub-reflector shape on the electromagnetic field distribution and the beam width of the feed is studied.A new bow-tie feed structure is proposed.The simulation results show in the Ku band,the 3 dB beam width is more than 160°.This feed extends the bandwidth and improves the radiant efficiency than the traditional one.

关 键 词：双层pillbox天线 蝶形馈源 宽波束 矢量有限元 

分 类 号：TN82[电子电信—信息与通信工程]