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Volume 26 Issue 3
Mar.  2000
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Journal of Beijing University of Aeronautics and Astronautics  > 2000  >  26(3): 286-289.
SU Dong-lin, Lü Shan-wei, ZHANG Qi-shanet al. Modal Technique in Time Domain for the FDTD-Diakoptics[J]. Journal of Beijing University of Aeronautics and Astronautics, 2000, 26(3): 286-289. (in Chinese)
Citation: SU Dong-lin, Lü Shan-wei, ZHANG Qi-shanet al. Modal Technique in Time Domain for the FDTD-Diakoptics[J]. Journal of Beijing University of Aeronautics and Astronautics, 2000, 26(3): 286-289. (in Chinese)
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Modal Technique in Time Domain for the FDTD-Diakoptics

  • Beijing University of Aeronautics and Astronautics,Dept. of Electronic Engineering

  • Received Date: 17 Nov 1998
  • Publish Date: 31 Mar 2000
    Abstract
  • A modal technique in time domain for the FDTD-Diakoptics is proposed. Based on modal functions in time domain, which are formed according to geometries of structures, a microwave circuit is equivalent to a multi-mode circuit. Full-wave analysis method is used to get the time domain responses ofthe multi-mode circuit. Then Fourier transfer technique is employed to obtain the impulse responses. The multi-mode circuit is equivalent to a multi-port circuit and the FDTD-Diakoptics is applied to analyze whole circuit. In this paper, some rules about the excitation of full-wave analysis are given and also the bandwidth for inverse Fourier transfer in calculating impulse responses of time-domain modes are discussed. Finally the approach is verified by a waveguide bandpass filter. The results show good agreements with FDTD results.

     

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    • References(1)
  • [1] Huang T W, Houshmand B, Itoh T. The implementation of time-domain Diakoptics in the FDTD method[J]. IEEE Trans Microwave Theory Tech, 1994, 42:2149~2155. [2]Su D, Park J S, Houshmand B,et al. A novel 2-D multi-mode parallel time domain Diakoptics and its application in filter analysis and design. In:Meixner R. IEEE International Microwave Symp Dig. USA:IEEE Publication Order Department,1998.807. [3]Su D,Park J S,Qian Y,et al. Design of filters with thick irises by a hybrid timedomain Diakoptics and frequency synthesis approach. In:Liao Fujiang ed.International Conference on Microwave and Millimeter Wave Technology. 北京:电子工业出版社,1998.
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