一种宽带单脉冲赋形反射面天线设计  

Design of a Broadband Monopulse Shaped Reflector Antenna

作　　者：刘博 何丙发[2] 韩峰 

机构地区：[1]解放军95899部队 [2]南京电子技术研究所 [3]解放军95801部队

出　　处：《现代雷达》2013年第8期59-61,74,共4页Modern Radar

摘　　要：文中设计了一个新型的双端口馈电共壁喇叭作单脉冲馈源,通过改变喇叭张角和末端形状,产生可利用的高次模TE_(30),来改善喇叭的辐射特性。该馈源喇叭耐功率高、结构紧凑、易于加工;在30%的带宽范围内可实现期望的和/差波瓣。给出了赋形反射面天线的初步估计方法,应用迭代优化算法设计了一个赋形反射面天线,并应用快速多极子进行了远区波瓣性能计算,计算结果满足指标要求,该设计方法对工程应用具有借鉴价值。A novel wideband pyramidal horn with two ports fed and the same wall between them is designed to use as the feed of pulse radar. TE30 mode is used to improve the radiation characteristics by spreading the flare angle in E-plane and H-plane separately and altering the aperture shape of the horn, which has high power capacity and is easy to maching with compaet structure. The calculated curves show that the anticipant sum and difference patterns are realized in wideband of 30 %. A method of primary estimate of the shaped reflector antenna is presented. The interative method is used to optimize the shape of the elevation pattern and An normal example is put up for validating the method. Its electric performance in far field has been calculated in whieh FFM is used. Based on the requirements of project , The electric performance of the reflector antenna is calculated. The results of calculation by computer can satisfy the requirement. The design method can be used for engineers.

关 键 词：赋形反射面 宽带 和 差波束 

分 类 号：TN820[电子电信—信息与通信工程]