The calculation of mutual coupling usually demands intense computations, especially for large aperture antennas placed in the near-field region of each other. In this article, the validity of an integral coupling formula is evaluated to demonstrate its utilizations where an efficient method for computing mutual coupling is most required. The integral coupling formula is used to compute the mutual coupling between two antennas in the near-field and far-field regions. The formula demonstrates fast and accurate computing properties based on typically available information such as 3-D vector far-field patterns and antenna configurations. Based on the coupling formula, a comprehensive evaluation is performed with respect to diverse antenna configurations, computation time, accuracy, and different polarizations. The expanded applicability of the formula is also examined through an antenna configuration, which includes a circular polarization selective surface (CPSS) structure to reduce the level of mutual coupling.

中文翻译：

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关于计算两个天线之间的相互耦合

相互耦合的计算通常需要大量的计算，特别是对于放置在彼此近场区域的大口径天线。在本文中，评估了积分耦合公式的有效性，以展示其在最需要计算互耦合的有效方法的情况下的用途。积分耦合公式用于计算两个天线在近场和远场区域的互耦合。该公式展示了基于典型可用信息（例如 3-D 矢量远场模式和天线配置）的快速准确计算特性。基于耦合公式，对不同的天线配置、计算时间、精度和不同的极化进行综合评估。