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    題名: The Charges, Currents and Near-Field Characteristics of the Transparent Source for the FDTD Method
    作者: 李慶烈;Li, Ching-lieh;Chen, Shao-hon;Liu, Chien-wei;Lin, Chih-wei
    貢獻者: 淡江大學電機工程學系
    關鍵詞: FDTD;transparent source;dc offset
    日期: 2005-09
    上傳時間: 2013-07-11 11:57:13 (UTC+8)
    出版者: Taipei : Chinese Institute of Chemical Engineers
    摘要: The electromagnetic characteristics of a transparent source for the finite‐difference time‐domain (FDTD) method are investigated. The approximate formulations for the corresponding electric and magnetic fields at the source are first reported, while the associated charges and current are also demonstrated. The approximate E field and H field are very closely related to the FDTD simulated results. It is shown that the magnetic field is proportional to the temporal derivative of the electric field at the source node, while the electric field is proportional to the temporal integration of the driving function. Static charges may be built up to produce static E fields after the driving function has passed, which are responsible for the dc offset problem in the pulsed FDTD algorithm. The dc offset is verified for the case of Gaussian pulse excitation and is avoided via the use of a bipolar pulse.
    關聯: Journal of the Chinese Institute of Engineers=中國工程學刊 28(5), pp.819-826
    DOI: 10.1080/02533839.2005.9671052
    顯示於類別:[電機工程學系暨研究所] 期刊論文

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