Alavikia Babak, Ramahi Omar M
Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Ontario, Canada.
J Opt Soc Am A Opt Image Sci Vis. 2012 Jun 1;29(6):1132-40. doi: 10.1364/JOSAA.29.001132.
The coupling interactions in electromagnetic scattering from a finite array of two-dimensional identical cavities engraved in a perfectly electric conducting screen covered with stratified dielectric coating are presented using an algorithm based on the hybrid finite element-boundary integral method. The solution to the scattering from a finite array of cavities is approximated using the array factor method, which does not take into account the coupling between the cavities, and is compared to the recently developed finite element-boundary element method to demonstrate the importance of the inclusion of the coupling effect. Dependence of the coupling interactions between the cavities on various parameters such as separation periods, incident angle of the plane-wave excitation, and permittivity and thickness of the dielectric coating is demonstrated quantitatively through several numerical examples.
利用基于混合有限元-边界积分法的算法，给出了刻在覆盖有分层介质涂层的理想导电屏幕上的二维相同腔体有限阵列电磁散射中的耦合相互作用。使用阵列因子法近似求解腔体有限阵列的散射，该方法未考虑腔体之间的耦合，并将其与最近开发的有限元-边界元法进行比较，以证明考虑耦合效应的重要性。通过几个数值例子定量地展示了腔体之间的耦合相互作用对各种参数的依赖性，如间隔周期、平面波激励的入射角以及介质涂层的介电常数和厚度。
