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An improved shift operator finite-difference time-domain method based on digital signal processing technique for general dispersive medium

Ge De-Biao Zhang Yu-Qiang

An improved shift operator finite-difference time-domain method based on digital signal processing technique for general dispersive medium

Ge De-Biao, Zhang Yu-Qiang
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  • Abstract views:  3475
  • PDF Downloads:  792
  • Cited By: 0
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  • Received Date:  13 January 2008
  • Accepted Date:  28 March 2009
  • Published Online:  20 December 2009

An improved shift operator finite-difference time-domain method based on digital signal processing technique for general dispersive medium

  • 1. (1)西安电子科技大学物理系,西安 710071; (2)西安电子科技大学物理系,西安 710071;延安大学物理与电子信息学院,延安 716000

Abstract: An improved shift operator finite-difference time-domain (SO-FDTD) method for general dispersive medium based on the implementation of infinite impulse response filter in digital signal processing technique is presented. Compared with the commonly used SO-FDTD, the storage variables in the improved SO-FDTD are reduced by 33% and computational efficiency is also increased. Finally, the generality and the feasibility of the presented scheme are validated by calculations of scattering by first order and second order dispersive objects.

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