单轴各向异性左手介质填充波导截止特性的FDTD分析  

Cut-off Characteristic of Waveguide Filled with Uniaxial Anisotropic Left-handed Medium Analyzed by FDTD

作　　者：翟实庆 郑勤红[1] 段佳艳 姚斌[1] 向泰[1] 杨继孔 曹湘琪 

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）》2014年第2期10-13,共4页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金资助项目(10365002)

摘　　要：给出用时域有限差分(finite-difference time-domain,FDTD)法分析单轴各向异性左手介质填充波导问题的差分公式.为验证递推公式的正确性和有效性,计算了各向同性左手介质填充矩形波导TE模归一化截止频率,计算结果与文献报道吻合较好;分析了介质厚度以及介质的相对磁导率对部分各向同性及各向异性左手介质填充矩形波导TE模归一化截止频率的影响.The difference formulas of finite-difference time-domain （FDTD） method of waveguide filled with uniaxial anisotropic left-handed medium were derived.To demonstrate the validity of the formula,the normalized cut-off frequency of TE-mode was calculated and coincided with former research.The effects of the width and relative permeability of medium on rectangular waveguide partially filled with isotropic left-handed medium and uniaxial anisotropic left-handed medium were also analyzed.

关 键 词：时域有限差分 单轴各向异性左手介质 波导 截止特性 

分 类 号：O441.1[理学—电磁学]