一种新型圆极化宽带喇叭天线  

Novel circularly polarized broadband horn antenna

作　　者：刘微[1] 韦高[1] 侯新宇[1] 

机构地区：[1]西北工业大学,西安710072

出　　处：《电子测量技术》2007年第5期169-171,共3页Electronic Measurement Technology

摘　　要：介绍了一种新型的椭圆极化的加脊宽带喇叭天线。根据天线的性能要求,馈电端口采用了矩-圆转换器,采用圆波导内置介质片实现了辐射电场的圆极化,采用扼流环抑制旁瓣。使用Ansoft公司的HFSS软件仿真了该天线,调整各部分的结构尺寸,使得在7～17GHz的工作频带范围之内,天线的方向图满足要求,具有比较宽的半功率波瓣宽度,输入端阻抗匹配,驻波比达到最小,具有很高的承受功率。与实际的测量数据相对比,结果基本吻合。A novel elliptically polarized ridged broadband horn antenna is introduced. The design of the antenna is based on practical need. Square-circular conversion is used in the excitation port. The circular polarized field is realized by dielectric loaded in a waveguide, and choke is used to suppress the sidelobe. The antenna is simulated in HFSS which is developed by Ansoft. After adjusting, the dimension of each part the antenna can work well between 7 to 17 GHz, the pattern can satisfy the system demand, and impedances are well matched in import. VSWR is up to the minimum and the antenna can receive rather high a power. Simulation experiment shows the results are consistent with the measurement data.

关 键 词：椭圆极化 加脊喇叭 HFSS 

分 类 号：TN821[电子电信—信息与通信工程]