矩形变形脊波导主模截止波长研究  

Research on Transmission Characteristics of Changed Rectangular Waveguide

作　　者：李锦屏[1] 唐益文[1] 周云[1] 

机构地区：[1]兰州交通大学电子与信息工程学院,甘肃兰州730070

出　　处：《兰州交通大学学报》2010年第4期28-31,共4页Journal of Lanzhou Jiaotong University

摘　　要：为了满足微波传输系统性能的某些需求,各种结构形状的新型波导应运而生.本文采用有限差分法,利用Matlab计算了脊变形之中脊下陷矩形波导的传输特性,并对计算结果进行了对比分析,得出了在改变波导内部脊的位置、形状和大小等不同几何尺寸情况下的波导主模截止波长,通过分析,变形可以改变传输特性的调节范围,对微波工程有很重要的参考价值和指导意义.The influence of the ridge position and dimensions on the cutoff wavelength of the dominant mode in a changed rectangular waveguide is analyzed by the finite difference method based on MATLAB.The cutoff wavelength can be adjusted by changing the ridge dimensions.The numerical results for different values of ridge position,ridge height are obtained,which is useful in the design of many microwave components and subsystems.

关 键 词：脊波导 主模 截止波长 有限差分法 

分 类 号：TN015[电子电信—物理电子学]