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基于达朗伯行波法的光导开关传输线研究

朱言午1;石顺祥1;孙艳玲1;冯象初2;刘继芳1
  

  1. (1. 西安电子科技大学 技术物理学院,陕西 西安 710071;
    2. 西安电子科技大学 理学院,陕西 西安 710071)
  • 收稿日期:2007-09-24 修回日期:1900-01-01 出版日期:2008-12-20 发布日期:2008-12-20
  • 通讯作者: 朱言午

Study of photoconductive switches transmission line based on D’Alembert’s method

ZHU Yan-wu1;SHI Shun-xiang1;SUN Yan-ling1;FENG Xiang-chu2;LIU Ji-fang1
  

  1. (1. School of Technical Physics, Xidian Univ., Xi’an 710071, China;
    2. School of Science, Xidian Univ., Xi’an 710071, China)
  • Received:2007-09-24 Revised:1900-01-01 Online:2008-12-20 Published:2008-12-20
  • Contact: ZHU Yan-wu

摘要: 提出了利用达朗伯公式行波法分析光导开关传输线的新方法,建立了电磁波时域有限差分中边界条件及源的设置方法.利用时域有限差分法分析了普通微带线产生脉冲的瞬态过程,得到了Blumlein线几何结构与输出脉冲幅度的比例关系,提出并分析了一种可以产生双极性电脉冲的光导开关传输线.仿真和实验结果良好的一致性证明了达朗伯公式行波法结合时域有限差分法可以从电磁场角度研究并精确分析脉冲产生电路.

关键词: 达朗伯公式, 光导开关, 传输线, 有限时域差分, 双极性脉冲

Abstract: D’Alembert’s method is used to analyze the Photoconductive Switches transmission line. A total reflection border and the implementation of a new field source excitation for the finite-difference time-domain method are built to satisfy D’Alembert’s method. The electrical pulse generation and propagation by Photoconductive Switches (PCSS) microstrip line are simulated by the finite-difference time-domain method and the effect of Blumlein line geometrics on the pulse amplitude is acquired An ultra short bipolar pulse generator based PCSS is developed and analyzed. The good agreement of experimental results with the simulated values shows that D’Alembert’s method coupled with the finite-difference time-domain method could be used to study and accurately analyze the pulse circuit from the electromagnetic viewpoint.

Key words: D'Alembert's method, photoconductive switches, transmission line, FDTD, bipolar pulse

中图分类号: 

  • TN789.1