ABSTRACT This article deals with a new hybrid approach combining a Moment Method (MOM), with the Geometrical Theory of Diffraction (GTD), this approach evaluates the currents surface on the microstrip antenna placed in the rectangular Electric Magnetic Electric Magnetic(EMEM) Waveguides. The incident field is taken as a TEM polarized plane wave in the principal plane. The new hybrid current function based on the Geometrical Theory of Diffraction (GTD), consists in approximating the total current on a homogenous metallic pattern on two steps; in the inside of the metal is dominated by the Physical Optic (PO) method, and the edges, tips effects are described by the GTD method. A set of test functions (sinusoidal or triangular or others) used in the MoM method is replaced by one and unique test function, to get a rapid convergence and less computation time. The new hybrid method can be applied to different structures to calculate scattering for validation proposes. The result of this new method electromagnetic variables current and filed distributions are in agreement with those given by the MoM method. An accurate gain in precision and time, memory resources are obtained.

中文翻译：

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矩形波导中金属物体的电磁散射建模混合方法（MOM-PO-GTD）

摘要 本文介绍了一种新的混合方法，它结合了矩量法 (MOM) 和几何衍射理论 (GTD)，该方法评估了放置在矩形电磁电磁 (EMEM) 波导中的微带天线上的电流表面。入射场被视为主平面中的 TEM 偏振平面波。基于几何衍射理论 (GTD) 的新混合电流函数包括分两步逼近均匀金属图案上的总电流；金属内部以物理光学 (PO) 方法为主，边缘、尖端效应以 GTD 方法描述。MoM 方法中使用的一组测试函数（正弦或三角形或其他）被一个独特的测试函数取代，以获得快速收敛和更少的计算时间。新的混合方法可以应用于不同的结构来计算验证建议的散射。这种新方法的电磁变量电流和场分布的结果与由 MoM 方法给出的结果一致。获得精确度和时间的准确增益，获得内存资源。