变形圆脊矩形波导传输特性的研究  

Study on Transmission Characteristic of Circular-ridge Waveguide in Different Distortions

作　　者：陈小强[1] 赵霞[1] 逯迈[1] 任恩恩[1] 

机构地区：[1]兰州交通大学,甘肃兰州730070

出　　处：《现代电子技术》2010年第2期134-136,共3页Modern Electronics Technique

基　　金：甘肃省自然科学基金资助项目(3ZS024-B25-034);兰州交通大学青蓝人才工程资助

摘　　要：脊波导器件在使用中会产生各种变形,在此采用有限元方法研究错位和受力变形对圆脊矩形波导传输特性的影响。数值分析结果表明,错位变形使脊波导截止波长变长,单模带宽增大程度小于2%;双边受力变形对脊波导传输特性的影响较大,当变形达到10%时,其特性变化超过10%,在使用中应引起重视。Ridge waveguide apparatus can engender various distortions in use, the finite element method is applied to research the influence of transmission characteristic of displacement distortion and distortion under stress to circular-ridge waveguide. Numerical results indicate that displacement distortion makes the cutoff wavelength of ridge waveguide increase, but the extent of single--mode bandwidth increased is less than 2%. For transmission characteristic of ridge waveguide,it has bigger influence and should be respected in use that distortion of ridge waveguide under stress in two sides,while deformation attains 10%,its characteristics change more than 10%.

关 键 词：有限元法 脊波导 截止波长 单模带宽 

分 类 号：TN814[电子电信—信息与通信工程]