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使用FDTD法对由两正交矩形波导构成的宽壁缝隙耦合器进行了严格的分析 .通过对两种类型缝隙 (纵向 /横向缝隙和斜向缝隙 )的分析 ,得出了耦合器在不同的波导尺寸及频率下散射系数、谐振长度的变化特性 ,这些结果与矩量法求得的结果完全吻合 .还利用得出的特性分析了一种带有短路器的耦合器系统 ,为缝隙阵天线的综合设计提供参考 .
The FDTD method is used to analyze the wide-gap coupler which is composed of two orthogonal rectangular waveguides. By analyzing the two types of slits (longitudinal / transverse slits and oblique slits) Waveguide size and frequency of the scattering coefficient, the resonant length of the variation characteristics of these results and the moment method obtained by the results of the exact results also used to analyze the characteristics of a coupler with a short circuit for the slot array antenna Comprehensive design for reference.