Admittance of an isolated waveguide-fed slot radiating between baffles using a spectrum of two-dimensional solutions
Admittance of an isolated waveguide-fed slot radiating between baffles using a spectrum of two-dimensional solutions
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使用二维解谱来确定挡板之间辐射的隔离波导槽的导纳
DOI：
10.1109/8.220974
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发表时间：
1993
影响因子：
5.7
通讯作者：
S. Rengarajan
中科院分区：
文献类型：
--
作者：
K. Forooraghi;P. Kildal;S. Rengarajan
本文提出了一种计算有限高隔板间辐射的孤立宽壁分流缝隙谐振长度和导纳特性的有效方法。通过相对于纵向z方向的傅立叶变换，将与该几何形状相关联的外部三维（3D）场问题简化为二维（2D）场问题。对于纵波数k/sub z/的每个值，使用矩量法求解板的口部中的E场的积分方程。对于k/sub z/的几个离散值重复该过程，以获得2D解的谱，然后将其逆变换以在空间域中构建外部挡板区域和半空间的3D解。缝隙孔径场由积分方程的常规矩量法解确定，该积分方程强制H场在缝隙上的连续性。然后推导出缝隙的散射特性。谐振长度和谐振电导的数值结果。计算结果与实验测量数据吻合较好。>
An efficient method of computing resonant length and admittance characteristics of an isolated broad-wall shunt slot radiating between baffles of finite height is presented. The outer three-dimensional (3D) field problem associated with this geometry is reduced to a two-dimensional (2D) one via a Fourier transformation with respect to the longitudinal z direction. For each value of the longitudinal wave number k/sub z/ an integral equation is solved for the E field in the mouth of the plates using the method of moments. This procedure is repeated for several discrete values of k/sub z/, to obtain a spectrum of 2D solutions which are then inverse-transformed to construct the 3D solution in the spatial domain for the exterior baffle region and the half space. The slot aperture field is determined by the conventional moment method solution to the integral equation that enforces the continuity of the H field across the slot. Scattering properties of the slot are then deduced. Numerical results for the resonant length and resonant conductance are presented. Computer results are found to be in good agreement with experimentally measured data. >