纵向槽和径向槽组合波纹喇叭馈源的优化设计  

Design and optimization of a corrugated horn feed with axial and radial slots

作　　者：牛耕 张文静[1] 解磊[1] 杜彪[1] NIU Geng;ZHANG Wenjing;XIE Lei;DU Biao(The 54th Research Institute of CETC,Shijiazhuang 050081,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,石家庄050081

出　　处：《电波科学学报》2018年第4期490-495,共6页Chinese Journal of Radio Science

基　　金：国家重点研发计划(2016YFE0100100)

摘　　要：研究了纵向槽和径向槽组合的波纹喇叭馈源的优化设计方法.基于旋转体时域有限差分算法分析波纹喇叭的性能,结合协方差矩阵自适应进化策略,以天线口径效率为目标,优化设计了一款Ku频段波纹喇叭馈源,并加工和测试了馈源样机.计算与实测结果表明,在10.7～12.75GHz频带内,该喇叭具有良好的阻抗匹配和辐射特性,应用于标准卡塞格仑天线时,天线口径效率优于78%,验证了这种优化设计方法的有效性.The optimization method of horns that combine axial and radial slots was studied. Body of revolution finite difference time domain algorithm was applied in analyzing horns. A corrugated horn work- ing in the Ku band was designed and optimized using covariance matrix adaptation evolution strategy for better aperture efficiency. The optimized horn was fabricated and tested. Simulated and measured results show a good agreement in both impedance matching and radiation patterns in 10.7-12.75 GHz. The aper- ture efficiency is better than 78% with the feed illuminating a classical Cassegrain antenna, which proves the effectiveness of this optimization method.

关 键 词：旋转体时域有限差分法 协方差矩阵自适应进化策略 波纹喇叭 紧凑型馈源 纵向波纹槽 

分 类 号：TN82[电子电信—信息与通信工程]