https://doi.org/10.1051/epjap:2008152
Non-rotationally invariant invisibility cloaks and concentrators of EM Waves
1
State Key Laboratory of Millimeter Waves, Department of Radio Engineering
Southeast University, Nanjing 210096, P.R. China
2
College of Information Science and Technology
Nanjing Forestry University, Nanjing 210037, P.R. China
Corresponding authors: wxjiang@emfield.org tjcui@seu.edu.cn
Received:
11
June
2008
Revised:
29
June
2008
Accepted:
22
July
2008
Published online:
21
August
2008
We present electromagnetic invisible cloaks and concentrators which are composed of inhomogeneous and anisotropic metamaterials with a square-shaped outer boundary and a circular-shaped inner boundary. Using the technique of coordinate transformation, closed-form formulations of the permittivity and permeability tensors have been derived for the metamaterials to realize the invisible cloaking and to concentrate electromagnetic waves. Full-wave simulation results are given to validate the non-rotationally invariant cloaks and concentrators.
PACS: 41.20.Jb – Electromagnetic wave propagation; radiowave propagation / 42.25.Gy – Edge and boundary effects; reflection and refraction / 42.79.Dj – Gratings
© EDP Sciences, 2008
