Accurate modeling of the scattering of 2D cloaks using dispersive FDTD method with higher-order algorithm

作者：Ai, X.^*; Tian, Y.; Han, Y. P.; Shi, X. W.; Li, W. T.

来源：Journal of Quantitative Spectroscopy and Radiative Transfer, 2013, 124: 28-36.

DOI：10.1016/j.jqsrt.2013.03.016

• Finite difference time domain method
• Higher-order algorithm
• Scattering of cloaks

A higher-order dispersive finite-difference time-domain (FDTD) method has been proposed to accurately model cloaking structures. In the proposed method, the higher-order FDTD scheme with second-order accuracy in time and fourth-order in space has combined with the shift operator algorithm. The exotic electromagnetic parameters of the cloaks are taken into account using shift operator based on dispersive FDTD method. The introduction of the higher-order algorithm would reduce the numerical dispersion of the FDTD method and guarantee a coarser grid during the simulation. Numerical results have indicated that the proposed method is more accurate than the available method maintaining the same grid size. Scattering width of different kinds of simplified cylindrical cloaks including thickness and loss is presented and this could serve for a further study on this subject.

• 出版日期2013-7
• 单位西安电子科技大学