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Analysis of Transient Electromagnetic Scattering from an Overfilled Cavity Embedded in an Impedance Ground Plane

机译:埋在阻抗接地平面中的过满空腔的瞬态电磁散射分析

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摘要

In this paper, we consider the time-domain scattering problem of a two-dimensional overfilled cavity embedded in an impedance ground plane. An artificial boundary condition is introduced on a semicircle enclosing the cavity that couples the fields from the infinite exterior domain to those fields inside. The problem is first discretized in time using the Newmark scheme, and at each time step, we derive the variational formulation for the TM polarization, and establish well-posedness. Numerical implementation of the method for both the planar and overfilled cavity models is also presented.
机译:在本文中,我们考虑了嵌入在阻抗接地平面中的二维过填充腔的时域散射问题。在包围腔的半圆上引入了人工边界条件,该半圆将场从无限外部域耦合到内部场。首先使用Newmark方案将问题离散化,然后在每个时间步上推导TM极化的变化公式,并建立适定性。还介绍了该方法在平面模型和填充模型中的数值实现。

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