下陷单脊矩形波导传输特性研究  

Research on Transmission Characteristics of Ridgedown Rectangular Waveguide

作　　者：薛德强[1] 

机构地区：[1]兰州交通大学光电技术与智能控制教育部重点实验室,甘肃兰州730070

出　　处：《兰州交通大学学报》2006年第6期36-39,共4页Journal of Lanzhou Jiaotong University

基　　金：甘肃省自然科学基金项目(3ZS042-B25-034)

摘　　要：利用亥姆霍兹方程的有限差分格式,研究在下陷单脊矩形波导中,脊在中心位置且几何尺寸变化对传输特性的影响.计算了脊的尺寸变化时的截止波长cλ和单模带宽λc/cλ1,并给出了TE10和TE11模式的场结构图.通过与传统单脊矩形波导的对比,指出了下陷单脊矩形波导传输特性的优缺点.Helmhohz equation＇s finite-difference method is applied to ridge-down rectangular waveguide to investigate the influence on transmission characteristics when the ridge is in the central part of the waveguide besides its change of dimension. Some data of the cutoff wavelength λc and single-mode bandwidth λc/λc1 is calculated. Furthermore,the field patterns of TE10 mode and TE11 mode are presented. After comparing with the traditional single-ridge rectangular waveguide, the advantages and disadvantages of ridge-down rectangular waveguide are pointed out.

关 键 词：玄姆霍兹方程 有限差分 传输特性 截止波长 单模带宽 场结构 

分 类 号：O141.4[理学—数学]