毫米波多模单脉冲喇叭馈源的分析与设计  

Analysis and Design of Millimeter-wave Multimode Monopulse Horn Feed

作　　者：刘熠志[1] 陈阳 官正涛[1] LIU Yizhi;CHEN Yang;GUAN Zhengtao(Southwest China Institute of Electronic Technology,Chengdu 610036,China)

机构地区：[1]中国西南电子技术研究所

出　　处：《电讯技术》2019年第8期976-980,共5页Telecommunication Engineering

摘　　要：对多模单脉冲喇叭馈源的理论和设计方法进行了研究。针对高次模的模比计算和控制难点,提供了一种准确的分析理论,给出了高次模的产生规律和模比的计算方法。在此基础上分析设计了一个毫米波多模单脉冲喇叭馈源并加工了实物,其实测结果表明,该馈源具有带宽宽(>5%)、驻波比小(<1.2)、和差矛盾小(<1.5 dB)、方位和俯仰面方向图对称性好的特点,与理论分析结果、仿真设计结果非常吻合,达到了预期的设计效果。The analysis and design method of multimode monopulse horn feed is researched.For the problems of the computation and control of higher modes’mode ratios,an accurate analysis theory is provided.The generation rules and mode ratios’computation methods of higher modes are presented.According to the presented analysis and design method,a millimeter-wave multimode monopulse horn feed is analyzed,designed and manufactured.The measured results show the good performances of the horn feed,such as wide bandwidth(more than 5%),low voltage standing wave ratio(VSWR)(less than 1.2),little gain difference between sum and difference patterns(less than 1.5 dB),good symmetry of patterns in elevation and azimuth.The measured results agree well with analysis results and simulation results,which validates the analysis and design theory.

关 键 词：单脉冲反射面天线 毫米波 多模喇叭馈源 

分 类 号：TN822.8[电子电信—信息与通信工程]