TITLE:
Improvement of Cylindrical Cloak by Layered Structure of Homogeneous Isotropic Materials
AUTHORS:
Jun DING, Yang LIU, Chenjiang GUO, Qian XU
KEYWORDS:
Cylindrical Cloak, Concentric Layered Structures
JOURNAL NAME:
Journal of Electromagnetic Analysis and Applications,
Vol.1 No.4,
December
31,
2009
ABSTRACT: The perfect cylindrical cloak requires three spatial variant material parameters, which is very difficult to realize in practice [Science 312, 1780 (2006)]. The approach of realizing the electromagnetic cloaking by concentric layered structures instead of using the metamaterial was presented [Optics Express, Vol. 15, No. 18 (2007)]. We use the concentric layered structures to realize a simplified cylindrical cloak with improved parameters and an ideal cylindrical cloak with spatially invariant axial material parameters. Numerical simulation results validate that cloaking performance is significantly improved compared with previously proposed multilayered cloak.