| N阶色散媒质的FDTD法与数字信号处理技术 |
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| 引用本文： | 汪彤,张文俊,刘维亮.N阶色散媒质的FDTD法与数字信号处理技术[J].电波科学学报,2000,15(4):455-458. |
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| 作者姓名： | 汪彤 张文俊 刘维亮 |
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| 作者单位： | 上海大学通信系277信箱,上海,200072 |
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| 摘 要： | 提出了一种新的N阶色散媒质的时域分析方法,并将其表征为一组无限冲击响应滤波器,将色散媒质在FDTD中的表述问题转化为数字滤波器(IIR)的设计问题.改进FDTD能分析处理与频率有关的电磁场问题.为验证此方法的有效性和可靠性,用此方法计算了高斯平面波脉冲入射N阶色散媒质的情况,计算结果与解析值非常吻合.
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| 关 键 词： | 时域有限差分 数字信号处理 无限冲激响应滤波器 N阶色散媒质 |
FDTD and digital signal processing for the nth-order dispersive media |
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| WANG Tong,ZHANG Wen-jun,LIU Wei-Liang.FDTD and digital signal processing for the nth-order dispersive media[J].Chinese Journal of Radio Science,2000,15(4):455-458. |
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| Authors: | WANG Tong ZHANG Wen-jun LIU Wei-Liang |
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| Abstract: | A new frequency dependent FDTD method using digital signal processing for Nth order dispersive medium was proposed in this paper.The dispersive midium is characterized as a set of infinite impulse filters. The representation of a dispersive medium had turned to the digital IIR design. In order to demonstrate the effectiveness of this approach, the coefficient of reflection of boundary between vacuum and dispersive medium was calculated by using this FDTD method, the results through FFT are compared with the analytic solutions. |
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| Keywords: | FDTD digital signal processing IIR nth order dispersive meX |
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