摘要
在三维柱坐标系下推导了麦克斯韦方程组在完全匹配层(PML)吸收边界条件中的时域有限差分(FDTD)表达式并编程实现;然后用一种简便的线性插值法完成了柱坐标系下的近场—远场转换;最后利用这种方法对圆柱形单极天线的反射电压、近区辐射场和远区辐射场进行了数值计算.结果表明该方法是正确可行的,可用于圆柱型目标结构的电磁特性研究.
The finite-difference time-domain formation of Maxwell’s equation is deduced and coded in a perfectly matched layer (PML) in three dimension cylindrical stretched coordinates. Then, the near-field to far-field Conversion is completed in 3-D cylindrical coordinates by using a convenient linear interpolation method. The reflected voltage on the reference plane, the computation of near and far electric fields of cylindrical monopole antenna are completed using this method. This method is examined for validity, and it can be used for study of electromagnetic characteristics of cylindrical objects.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
2003年第5期566-570,共5页
Journal of Harbin Engineering University
基金
国家自然科学基金资助项目(60271018).
