有限法兰上开端波导电磁场耦合的模态分析：带方形法兰的矩形波导评估
A Modal Analysis of Electromagnetic Fields Coupling into an Open-Ended Waveguide Mounted on a Finite Flange: Evaluation of a Rectangular Waveguide with a Square Flange
AI总结：
本文基于互易定理提出模态分析方法，首次全面评估有限法兰对开端波导穿透场的影响，并通过与全波仿真和实测对比验证了其精度与60倍速度优势。
摘要：
本文提出了一种基于互易定理的模态分析方法，用于计算耦合/穿透到安装在有限法兰上的开端波导中的场。尽管对外部源的几何形状和类型没有限制，但本文选择了一个无穷小偶极子来产生入射到波导孔径的平面波。所提出的方法将波导中每种穿透模式的幅度与该模式从波导孔径辐射的远场分量联系起来。最终结果的精度取决于所计算辐射场的精度。辐射场分量的计算考虑了由于孔径引起的反射场和由于法兰边缘引起的衍射场。本文首次全面讨论了有限法兰对波导穿透场的影响。选择安装在厚方形法兰上的矩形波导的几何结构进行评估。在各种示例中，严格讨论了改变几何结构主要参数对穿透场的影响。我们的结果与3D全波仿真进行了比较，结果之间发现了极好的一致性，而我们的分析方法显示出快60倍的性能。此外，我们将我们的结果与先前研究报告的测量结果进行了比较。
英文摘要：
This paper presents a modal analysis based on the reciprocity theorem to calculate the coupled/penetrated fields into an open-ended waveguide mounted on a finite flange. Although there is no limitation on the geometry and type of the external source, an infinitesimal dipole is chosen to produce a plane wave incident to the waveguide aperture. The proposed method relates the amplitude of each penetrated mode into the waveguide to the far-field radiation components of that mode from the waveguide aperture. The accuracy of the final result depends on the accuracy of the calculated radiated fields. The radiated field components are calculated considering the reflected fields due to the aperture and the diffracted fields due to the flange edges. For the first time, the impact of a finite flange on the penetrated fields into a waveguide is discussed comprehensively. The geometry of a rectangular waveguide mounted on a thick square flange is selected to be evaluated. The effects of changing the main parameters of the geometry on the penetrated fields are discussed rigorously in various examples. Our results are compared with 3D full-wave simulations, and an excellent agreement was found between the results while our analytical approach showing a 60 times faster performance. In addition, we compared our results with the measurement reported in a previous study.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
