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Z-transform algorithm in the finite-difference time domain analysis of ferrite subject to an arbitrary direction of external magnetic field

Wang Fei Wei Bing

Z-transform algorithm in the finite-difference time domain analysis of ferrite subject to an arbitrary direction of external magnetic field

Wang Fei, Wei Bing
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  • Received Date:  26 November 2012
  • Accepted Date:  22 January 2013
  • Published Online:  20 April 2013

Z-transform algorithm in the finite-difference time domain analysis of ferrite subject to an arbitrary direction of external magnetic field

  • 1. Department of Physics, Xidian University, Xi’an 710071, China
Fund Project:  Project supported by the National High Technique Research and Development Program of China (Grant No. 2012AA01A308) and the Basic Science Research Fund in Xidian University, China (Grant No. K50511070007).

Abstract: The susceptibility tensor of saturated magnetized ferrite in frequency domain in laboratory coordinate system is gained by using the transfer matrix between the principal and the laboratory system, and then its form in Z-domain is derived by Z-transform (ZT). The ZT-finite-difference time domain method applied to the ferrite subject to an arbitrary direction of external dc magnetic field is obtained. The co-polarized and cross-polarized backward radar scattering cross-section for a saturated magnetized ferrite sphere are obtained by the presented algorithm. The computed results indicate the correctness and feasibility of the method.

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