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Abstract
In this paper, a novel local time-step scheme for hybrid time-domain method combing finite difference and Cell-Centered finite volume method is put forward. This scheme leads to satisfied results and high efficiency with no special requirement for meshes. The principles of the hybrid method and numerical schemes are described and applied to solve three dimensional electromagnetic scattering problems. Two numerical results are given to compare this method with the FDTD alone in terms of accuracy and memory requirement for a solution with a given accuracy. They are also compared with the results obtained by using MOM. It is shown that the presented method is more accurate and efficient.