摘要
对屏蔽体耦合口径的辐射问题进行数值仿真时,导体盒内部结构的复杂性,以及导体盒外部近场到远场的变换是其中的难点所在.时域有限差分法(FDTD)可以处理内部结构复杂、非均匀介质的情况,而矩量法(MoM)擅长处理电大尺寸的辐射问题,因此可以把2种方法相结合来处理此问题.在导体盒内部由于结构和介质上的复杂性,使用了FDTD,在计算导体盒外部远场情况时,使用基于电场积分方程(EFIE)的MoM来变换到远场,从而解决了导体盒耦合口径的辐射问题,节省了计算机内存和计算时间.
This paper presents a hybrid method of the Finite-Difference Time-Domain （FDTD） and the method of moment （MoM） to compute the radiation from the aperture. The FDTD is a commonly used electromagnetic simulation way. It can solve the question with complex dielectric, but it is difficult （even cannot） for FDTD to calculate the far field because of large compute time and computer memory. So the authors can make use of the FDTD to get a large number of near electric field intensity, and then use the MoM, which based on electric field integral equation to compute the far field. Using this procedure, the authors solve the radiation of the box with apertures on one or more sides and reduced the compute time and the computer memory.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第6期54-57,共4页
Journal of Chongqing University
关键词
时域有限差分法
矩量法
混合方法
辐射
the Finite-Difference Time-Domain
the method of moment
electromagnetic compatibility
radiation
