Non-linear-transformation based cylindrical cloaks and their practical advantages

Abstract

Constitutive electromagnetic parameters of cloaks based on non-linear (quadratic and exponential) coordinate transformations are considered in this paper. The paper includes analysis and comparison of such parameters and parameters of cloaks based on the linear transformation found previously by other researchers. The shortcomings and advantages of found parameters are presented in this work. Also the results of numerical analysis of the cloak parameters done with COMSOL Multiphysics are shown.