用FDTD法分析对跖脊波导的带宽特性  

FDTD Analysis on Dominant-mode Bandwidth of Antipodal Ridge Waveguide

作　　者：胥万松[1,2] 郑勤红[2] 彭金辉[3] 姚斌[2] 

机构地区：[1]云南德宏师范高等专科学校,云南芒市678400 [2]云南师范大学物理与电子信息,云南昆明650092 [3]昆明理工大学材料与冶金工程学院,云南昆明650093

出　　处：《通信技术》2011年第10期27-29,共3页Communications Technology

摘　　要：提出用时域有限差分(FDTD)法分析对跖脊波导的主模单模带宽,并与相关文献报道的结果进行比较,计算结果表明:FDTD法具有较高的计算精度,可以很方便地用于波导传输特性分析。用FDTD法计算了脊位置、脊宽及脊高变化时对跖脊波导的主模单模带宽,给出了主模单模带宽分别在脊位置变化、脊宽变化及脊高变化时的变化规律,为对跖脊波导的设计和工程应用提供参考数据。The analysis on bandwidth of the dominant mode of antipodal ridge waveguide by finite-difference time-domain（FDTD） method is proposed,the numerical results are compared with those reported in the literatures,and the calculation results proves the efficiency of FDTD method.The bandwidth of the dominant mode of antipodal ridge waveguide is calculated,and the variable regularity of the bandwidth of the dominant mode is acquired when the ridge position,the ridged width,and the ridged height vary.These could serve as reference data for the design and engineering application of antipodal ridge waveguide.

关 键 词：时域有限差分法 对跖脊波导 截止频率 单模带宽 

分 类 号：O451[理学—无线电物理]