球面阻抗帽的表面电流和低语通道模式的衍射

6th International SYmposium on Antennas, Propagation and EM Theory, 2003. Proceedings. 2003 Pub Date : 1900-01-01 DOI:10.1109/ISAPE.2003.1276721

T. Sengor

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引用次数: 0

摘要

在具有不同阻抗面的球面弯曲阻抗片上，得到了高频低语通道波所产生的表面电流。明确地给出了几种衍射现象对表面电流的影响。描述了表面电流的产生原因和形式，并根据这些电流确定了散射场。结果以一种非常简单的形式解释了表面电流对散射场的贡献。当阻抗趋于零时，表达式减小为完全导电片的表达式。所得结果不依赖于源的实际配置，适用于更复杂的散射和逆散射现象。

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Surface currents and diffraction of whispering gallery modes by a spherical impedance cap

Surface currents induced by high-frequency whispering gallery waves on a spherically curved impedance sheet having different impedance faces are obtained. The influences of several diffraction phenomena on surface currents are given explicitly. The causes and forms of surface currents are described, and the scattered fields are determined from those currents. The results explain the contribution of surface currents to the scattered field in a quite simple form. When the impedance tends to zero the expressions reduce to those of the perfectly conducting sheet. The results are independent of the actual source configuration and applicable to more complicated scattering and inverse scattering phenomena.

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6th International SYmposium on Antennas, Propagation and EM Theory, 2003. Proceedings. 2003

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