arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1406.7328physics.optics
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用介电常数梯度球实现宽带电磁透明

Realizing broadband electromagnetic transparency with a graded-permittivity sphere

Lei Sun, Jie Gao, Xiaodong Yang

摘要:

基于广义Mie散射理论和全波条件下的数值模拟,通过精心设计的介电常数梯度球,实现了宽带电磁透明现象,该球在很宽的频率范围内具有极低的散射截面。通过研究极化随频率的变化,揭示了动态极化抵消现象。此外,为了减少实验中实现宽带透明的苛刻条件,本文还提出并验证了一种合理设计的多壳层球。

英文摘要:

Broadband electromagnetic transparency phenomenon is realized with a well-designed graded-permittivity sphere, which has an extremely low scattering cross section over a wide frequency range, based on the generalized Mie scattering theory and numerical simulation in full-wave condition. The dynamic polarization cancellation is revealed by studying the variation of the polarization with respect to the frequency. Furthermore, a properly-designed multi-shell sphere is also proposed and examined in order to reduce the rigorous conditions for realizing the broadband transparency in experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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