单层波导缝隙阵天线的设计与仿真

单层波导缝隙阵天线与多层波导缝隙阵天线相比,具有结构简单,纵向尺寸更小,加工成本低等特点,本文首先对单层波导缝隙阵天线的功分网络进行了设计与仿真,分析了Π型结、T型结以及H-T功分网络的结构及场分布,并分别采用Π型结、T型结以及H-T功分网络完成了单层波导缝隙阵天线设计,仿真计算结果表明:Π型结、T型结可分别实现同相和反相等功率馈电,而H-T功分网络可实现任意功率馈电,均可以作为单层波导缝隙阵天线的功分单元。仿真结果验证了本文设计方法的正确性。

Design and simulation of a Single-layer Slotted Waveguide Array

Compared with mutilayer slotted waveguide array, the single-layer slotted waveguide array is characterized by simpler configuration, smaller longitudinal dimension and lower processing cost. The power dividing network in single-layer slotted waveguide array is designed and simulated, and the configuration and field distribution of Ⅱ-junction, T-junction and Ⅱ-T power dividing network are analyzed. The Ⅱ-junction, T-junction and Ⅱ-T power dividing network are respectively used to complete design of single-layer slotted waveguide array. The simulated results show that Ⅱ-junction and T-junction can respectively implement power feeding in cophase and inverse phase constant power, and the H-T power dividing network can implement feeding in arbitrary power. All of these can be used as the power dividing unit of the single-layer slotted waveguide array antenna. The simulated results validate the correctness of this design approach.