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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Calculating Radiation from Arbitrarily Shaped Aperture Antennas Using the Free Space Radiation Integrals
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Calculating Radiation from Arbitrarily Shaped Aperture Antennas Using the Free Space Radiation Integrals

机译：使用自由空间辐射积分计算任意形状孔径天线的辐射

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摘要

A technique is derived by means of which the calculation of radiation from arbitrarily shaped aperture antennas can be greatly simplified compared to the conventional approach. In the conventional approach the null field region of an equivalence problem is typically filled with a conductor, effectively short-circuiting the aperture and the electric surface current density everywhere. The remaining aperture magnetic surface current density, which is known, then radiates in the presence of the conductor and the Green's function associated with each particular antenna configuration has to be derived, usually a very cumbersome process. In the proposed technique a conductor is again placed within S, but with an infinitesimal small distance between the conductor and S. The image of the electric current density on S is shown to be induced on the conductor and the free space radiation integrals can now be used to solve the radiation problem. Examples are presented to prove the new technique and to demonstrate the mechanics of the equivalence principle when applied to aperture antenna problems.
机译：得出一种技术，与常规方法相比，借助该技术可以极大地简化来自任意形状的孔径天线的辐射的计算。在常规方法中，等效问题的零场区域通常填充有导体，从而有效地使孔和表面电流密度各处短路。然后，已知的剩余孔径磁表面电流密度在导体存在时辐射，并且必须推导与每个特定天线配置相关的格林函数，这通常是非常麻烦的过程。在提出的技术中，将导体再次放置在S内，但导体与S之间的距离无穷小。在导体上感应出S上的电流密度图像，现在可以得到自由空间辐射积分用于解决辐射问题。举例说明了该新技术，并证明了当应用于孔径天线问题时的等效原理的原理。

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