摘要
设计一种双线极化的赋形波束波导缝隙驻波天线阵,它是由两个极化相互正交的线阵交错排列组成的二维阵列。馈电网络通过采用等高不等宽的波导实现相位加权,通过改变缝隙倾角实现幅度加权,从而得到特定的赋形波束。馈电网络置于阵面背后,背馈方式的采用展宽了天线的带宽。脊波导的采用减小了波导的宽边尺寸,避免了栅瓣的出现,使天线结构更加紧凑。加工了天线实物,测试结果与仿真结果在赋形波束主瓣内吻合良好。
A dual polarized shaped beam waveguide slot array antenna is proposed in this paper. The first polarization slot array is interlaced with the second one whose polarization is orthogonal with the first one to provide a planar antenna array. The phase exciting is made by the waveguides with equal height and different width, and the amplitude exciting is made by changing the slot angles, then the proper shaped beam is achieved. A ridged waveguide is adopted to obtain a compact structure and the rear-feed distribution network is adopted to broaden the bandwidth. The antenna is manufactured and the test result is coincident well with the simulation in the shaped beam part.
出处
《遥测遥控》
2014年第6期16-19,28,共5页
Journal of Telemetry,Tracking and Command
基金
总装预研项目
关键词
波导缝隙天线
双极化
赋形波束
Waveguide slot array antenna
Dual polarization
Shaped beam
