5~40 GHz超宽带双脊喇叭天线设计  

Design of 5-40 GHz Ultra-Wideband Double-Ridge Horn Antenna

作　　者：杨洋 孙全 Yang Yang;Sun Quan(Nanjing Second Military Representatives Office of the Air Force Equipment Department in Shanghai,Nanjing 211100,China;Nanjing Corad Electronic Equipment Co.,Nanjing 211100,China)

机构地区：[1]空装上海局驻南京地区第二军事代表室,南京211100 [2]南京科瑞达电子装备有限责任公司,南京211100

出　　处：《信息化研究》2024年第1期68-71,78,共5页INFORMATIZATION RESEARCH

摘　　要：本文针对超宽带喇叭天线主瓣方向图在高频的分裂现象,提出一种符合实际工程应用的超宽带双脊喇叭天线设计。此天线将双脊喇叭天线的侧壁变为金属栅格来改善天线的低频阻抗特性,缩小天线尺寸的同时抑制了高频主瓣方向图的分裂。本文从理论方面对脊波导和喇叭天线侧壁引入金属栅格的机理进行了分析,使用Ansoft HFSS电磁仿真软件对天线各部分尺寸进行优化仿真设计,实现了5~40 GHz最优双脊喇叭天线设计,其驻波比在全频带内小于2.5。本文对所设计天线进行了加工、装配、电性能测试,其测试电性能和仿真基本一致。This paper proposed a practical engineering solution for the phenomenon of splitting in the main lobe direction pattern of ultra-wideband horn antennas at high frequencies.A double-ridge horn antenna with metal grids introduced on the sidewall of the horn is proposed.This antenna improves the low-frequency impedance characteristics,reduce the antenna size,and mitigates the splitting phenomenon in the main lobe direction pattern at high frequencies.The working principle of the ridge waveguide and the introduction of metal grids on the sidewall are analyzed in this paper.The design process is described,and Ansoft HFSS electromagnetic simulation software is used to optimize the shape and dimensions of the antenna.The optimized design achieves a 5-40 GHz dual-ridge horn antenna with a VSWR of less than 2.5 across the entire frequency range.The antenna is fabricated,assembled,and subjected to electrical performance testing,which shows good agreement with thesimulationresults.

关 键 词：超宽带 栅格侧壁 双脊喇叭 

分 类 号：TN82[电子电信—信息与通信工程]