ABSTRACT The internal admittance matrix elements that are needed during the Method of Moments analysis of a longitudinal slot in a rectangular waveguide have been evaluated by considering the slot images in waveguide walls. The contribution from all the sources (real and virtual) has been evaluated by adopting the technique of Fast Matrix Generation (FMG). The contribution from all the image terms has finally been evaluated using a simple closed-form expression and a rapidly converging series. This leads to a faster, intuitive and more efficient analysis. The results calculated using this simple method are shown to be in excellent agreement with measured results and with other theoretical results. This method is useful in the efficient design of waveguide fed slot arrays.

中文翻译：

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使用图像法的矩形波导纵向槽的内导纳元件

摘要 通过考虑波导壁中的缝隙图像，对矩形波导中纵向缝隙的矩量法分析所需的内部导纳矩阵元素进行了评估。采用快速矩阵生成 (FMG) 技术评估了所有来源（真实和虚拟）的贡献。最终使用简单的封闭式表达式和快速收敛的系列评估了所有图像项的贡献。这导致更快、更直观和更有效的分析。使用这种简单方法计算的结果与测量结果和其他理论结果非常吻合。这种方法在波导馈电槽阵列的有效设计中很有用。