Analysis of Nearly Cylindrical Antennas and Scattering Problems Using a Spectrum of Two-Dimentional Solutions
Analysis of Nearly Cylindrical Antennas and Scattering Problems Using a Spectrum of Two-Dimentional Solutions
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使用二维解谱分析近圆柱形天线和散射问题
DOI：
10.1109/8.511828
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Arild Moldsvor
中科院分区：
文献类型：
--
作者：
P. Kildal;S. Rengarajan;Arild Moldsvor
本文提出了一种分析天线的强有力的方法，除了一些三维（3-D）物理或等效源，例如，偶极子或槽。傅里叶变换技术表明，这种天线可以分析为具有谐波纵向场变化的二维问题。辐射模式通常可以直接从这样的二维解的有限集合中确定，每个解可以通过任何方法获得，例如，矩量法为了确定源上的电流分布和源的阻抗或导纳，必须计算圆柱形散射体和源之间的相互作用。这是通过执行一个逆傅立叶变换的无限频谱的数值2-D solutions其次是矩量法解决方案在空间域中，以满足边界条件的3-D等效sourcesothemselves。利用渐近线提取法简化了傅里叶逆变换。该方法本身是一种混合技术，因为一种方法用于求解谐波二维问题，另一种方法用于求解源电流
This paper presents a powerful method to analyzeantennas which can be considered principally two-dimensional(2-D) or cylindrical, except for some three-dimensional (3-D)physical or equivalent sources, e.g., dipoles or slots. It is shown byFourier transform techniques that such antennas can be analyzedas 2-D problems with harmonic longitudinal field variation. Theradiation pattern can often be determined directly from a finiteset of such 2-D solutions, each one obtained by any method, e.g.,the moment method. The mutual interaction between the cylindrical scatterer and the sources must be calculated to determine theexact current distribution on the sources and their impedances oradmittances. This is facilitated by performing an inverse Fouriertransform of an infinite spectrum of the numerical 2-D solutionsfollowed by a moment method solution in the spatial domain tosatisfy the boundary conditions on the 3-D equivalent sourcesthemselves. The inverse Fourier transform is simplified by theuse of asymptote extraction. The method is in itself a hybridtechnique as one method is used to solve the harmonic 2-Dproblem, and the other to solve for the source currents