摘要
文中介绍一种毫米波低副瓣波导窄边缝隙行波阵的设计方法。设计过程中利用高频电磁仿真软件Ansoft-HFSS模拟实验过程,精确获取缝隙初始参数;合理选择数据拟合方法和变量形式拟合缝隙电导函数,减小数据误差的积累,达到理想逼近缝隙电导与其尺寸的关系;考虑交叉极化分量的影响后计算电导分布,精确获取缝隙倾角。采用该方法设计一根中心频率为35.5GHz的148单元缝隙直线阵。泰勒综合副瓣值为-40dB,仿真得到的最大副瓣为-35dB,实测E面方向图的最大副瓣值为-28.3dB。
In this paper,a method is presented to design nonresonant waveguide sidewall slot arrays operating in the millimeter wave band with a low sidelobe level.Ansoft-HFSS is used to simulate experimentations for getting the accurate parameters of elementary slot.The method of data approaching is used to establish the slot function,and the cross component of electric field is considered.A 148 elements narrow-wall slot array is made and measured.Numerical results and the experimental ones are in good agreement.
出处
《遥测遥控》
2007年第S1期168-171,共4页
Journal of Telemetry,Tracking and Command
关键词
波导窄边倾斜缝
行波阵
低副瓣
Sidewall inclined slot array in a rectangular waveguide
Traveling-wave-fed array
Low sidelobe
