一种新型U频段圆极化介质棒天线  

A novel U-band circularly polarized dielectric rod antenna

作　　者：高初[1] 赖清华[1] 陈明[1] 

机构地区：[1]中国电子科技集团公司第三十八研究所,合肥230088

出　　处：《雷达与对抗》2013年第1期38-41,共4页Radar & ECM

摘　　要：设计了一种由同轴矩形波导变换段、矩圆波导变换段、圆极化段和介质段组成的新型U频段圆极化介质棒天线,给出了相应的设计方法。仿真结果显示,在6%的带宽内驻波优于1.5,频带内轴比优于2 dB,3 dB波束宽度约为22°。该介质棒天线可用作U频段反射面天线或透镜天线的馈源。A novel U-band circularly polarized dielectric rod antenna composed of a coaxial-to-rectangular waveguide transition, a rectangular-to-circular waveguide transition, a circularly polarized waveguide and a dielectric rod is designed with the corresponding method given. The simulation resuits show that the VSWR is lower than 1.5 in the bandwidth of 6%, the axial ratio is less than 2dB in the band, and 3dB beam width is about 22°. The dielectric rod antenna can be used as the feed of U-band reflector or lens antennas.

关 键 词：天线 U频段 圆极化 介质棒 

分 类 号：TN821.5[电子电信—信息与通信工程]