各向异性介质填充矩形波导的FDTD分析  

FDTD Method Analysis of Rectangular Waveguide Filled With Anisotropic Medium

作　　者：张方涛[1] 郑勤红[1] 向泰[1] 尤丽佳[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）》2012年第3期54-57,共4页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金重点资助项目(50734007)

摘　　要：从麦克斯韦方程推导出用时域有限差分(FDTD)法分析电各向异性介质填充波导问题的差分公式;在MATLAB平台上,编程实例计算了电各向异性无耗介质完全填充矩形波导TE波部分模式的截止频率,计算值与理论值吻合较好;分析计算了矩形波导尺寸变化及电各向异性非单轴介质加载厚度对TE波截止特性的影响。This paper describes the difference expression in the waveguide filled with anisotropic medium by using finite-difference time-domain（FDTD）method. In order to demonstrate the validity of the FDTD method, the TE-mode cut-off wavenumbers of the rectangular waveguide filled with lossless electrical anisotropic medium is calculated with the MATLAB tool and a comparison is given. The law of the TE-mode cut-off wavenumbers is obtained when the rectangular waveguide dimension and the loaded width of non-uniaxial electrical anisotropic medium vary.

关 键 词：时域有限差分法 电各向异性介质 矩形波导 截止波数 截止频率 

分 类 号：O441.4[理学—电磁学]