Realizing broadband electromagnetic transparency with a graded-permittivity sphere

  title={Realizing broadband electromagnetic transparency with a graded-permittivity sphere},
  author={Lei Sun and Jie Gao and Xiaodong Yang},
  journal={Journal of Optics},
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… 
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