| PML在三维柱坐标系下的应用及脉冲天线数值模拟 |
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| 引用本文： | 张洪欣,吕英华,贺鹏飞,陈大庆. PML在三维柱坐标系下的应用及脉冲天线数值模拟[J]. 遥测遥控, 2003, 0(1) |
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| 作者姓名： | 张洪欣 吕英华 贺鹏飞 陈大庆 |
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| 作者单位： | 北京邮电大学培训中心 北京100876(张洪欣，吕英华，贺鹏飞)，北京邮电大学培训中心 北京100876(陈大庆) |
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| 基金项目： | 国建自然科学基金资助项目 ,No:69931 0 30 |
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| 摘 要： | 在三维柱坐标系下推导了麦克斯韦方程在完全匹配层 (PML )吸收边界条件中的时域有限差分 (FDTD)表达式 ,从而把 FDTD推广到三维复柱坐标系中并编程实现。为保证求解的稳定性 ,给出了更为严格的时间步长计算公式 ,并去除了对称轴上的奇点。提出了利用插值法对 PML最外层理想金属层进行设置的方法 ,并简化了通常处理理想金属表面电磁场的约束条件。最后给出在柱坐标系下脉冲天线的数值模拟。
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| 关 键 词： | 时域有限差分(FDTD) 完全匹配层(PML) 电磁场 脉冲天线 |
Application of Perfectly Matched Layer (PML) in Three Complex Dimension Coordinates and the Radiation Simulation of Pulse Antenna |
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| Zhang Hongxin Lu Yinghua. Application of Perfectly Matched Layer (PML) in Three Complex Dimension Coordinates and the Radiation Simulation of Pulse Antenna[J]. Telemetry & Telecontrol, 2003, 0(1) |
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| Authors: | Zhang Hongxin Lu Yinghua |
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| Affiliation: | Zhang Hongxin Lu Yinghua |
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| Abstract: | The finite-difference time-domain formation of Maxwell's equations are deduced and coded in perfectly matched layer(PML) in 3-D cylindrical complex coordinates.In order to ensure the stability of the resolution,a strict time-step formula is given,and the singularities on axis are removed.On attempt to acquire availability,a new interpolating method is proposed and the electromagnetic constrain condition on metal face is simplified. At last,the simulation of a pulse antenna is completed with this method. |
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| Keywords: | Finite-difference time-domain(FDTD) Perfectly matched layer(PML) Electromagnetic Pulse antenna |
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