用FDTD法分析各向异性介质填充矩形波导的截止特性  

FDTD method analysis of cut-off characteristic of Rectangular Waveguides Filled with anisotropic medium

作　　者：王建敏[1] 郑勤红[1] 姚斌[1] 林福明[1] 李升辉[1] 胥万松[1] 李琳[1] 

机构地区：[1]云南师范大学物理与电子信息学院,云南昆明650092

出　　处：《云南师范大学学报（自然科学版）》2011年第2期60-64,共5页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金重点项目(50734007)

摘　　要：给出用时域有限差分(FDTD)法分析各向异性介质填充波导问题的差分格式,实例计算了磁各向异性介质完全填充矩形波导TE模各模式的截止波数,计算结果与理论值吻合较好;分析了磁各向异性介质和电各向异性介质填充对矩形波导TE模和TM模主模归一化截止波数的影响。This paper presents the difference expression of waveguide filled with anisotropic medium by using finite-difference time-domain（FDTD） method.In order to demonstrate the validity of the method,the cut-off wavenumber of TE-mode of the rectangular waveguide filled with anisotropic medium is calculated and a comparison is given.The law,the relation of the normalized cut-off wavenumber and the loaded medium width in rectangular partially filled with magnetic and electric anisotropic medium,has be given.

关 键 词：时域有限差分法 各向异性介质 矩形波导 截止波数 

分 类 号：O441[理学—电磁学]