Admittance of a longitudinal waveguide slot radiating into an arbitrary cylindrical structure
Admittance of a longitudinal waveguide slot radiating into an arbitrary cylindrical structure
复制标题
辐射到任意圆柱形结构的纵向波导槽的导纳
DOI：
10.1109/8.391137
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发表时间：
1995
影响因子：
5.7
通讯作者：
P. Kildal
中科院分区：
文献类型：
--
作者：
J. Wettergren;P. Kildal
在本文中，我们使用混合方法来计算矩形波导中纵向槽（有限长度）的导纳，当槽辐射到任意有限横截面的圆柱形外部结构时。该分析利用了沿圆柱轴的傅立叶变换，从而大大减少了计算量。结构上的谐波谱电流在分段三角基函数中展开，并使用电场积分方程 (EFIE) 和矩法确定。这些电流和相应的场通过使用槽场的整个域基函数的附加矩方法方法进行逆傅里叶变换并在槽上与波导内的场匹配。与所选几何形状的测量结果相比，计算出的槽导纳具有良好的精度。 >
In this paper we use a hybrid method to calculate the admittance of a longitudinal slot (of finite length) in a rectangular waveguide, when the slot radiates into a cylindrical outer structure of arbitrary finite cross section. The analysis takes advantage of a Fourier transformation along the cylinder axis, by which the computational effort is drastically reduced. The harmonic spectral currents on the structure are expanded in subsectional triangular basis functions and determined using an electric field integral equation (EFIE) and the moment method. These currents and the corresponding fields are inverse Fourier transformed and matched over the slot to the fields inside the waveguide by an additional moment method approach using entire domain basis functions for the slot field. The calculated slot admittance has good accuracy when compared with measurements on a chosen geometry. >