摘要
设计了一种适用于雷达、通信等领域的介质加载圆极化波导阵列天线,天线的圆极化信号通过隔板移相器的方式实现,设计的天线在K频段内驻波比小于2,交叉极化低于25 dB,单元增益在带内大于5 dB,波束宽度大于100°,能够满足阵列扫描的要求。加工天线后实测结果与仿真结果吻合一致,该阵列天线既适合固定波束阵列天线,又适合具有相扫功能的阵列天线。
A kind of circularly polarized waveguide phased array antenna loaded with the dielectric material of K band is designed for radar, communication. The circular signal is produced by step wall shifter which is arranged inside the waveguide antenna. The antenna in array has a series of advantage, such as VSWR less than 2 and low cross polarization less than 25 dB. The gain of ele- ment antenna is greater than 5 dB, and beam width is more than 1130 degrees. The results obtained from the simulation model and the manufactured agree much well. And the antenna arrays not only can be applied in single beam system, but also in the phased scanning occasion.
出处
《现代雷达》
CSCD
北大核心
2013年第12期60-63,共4页
Modern Radar
关键词
K频段
相控阵
介质加载
圆极化
K-band
phased array
dielectric loading
circularly polarized
