太赫兹波纹圆波导模式变换器的优化设计  

Optimization Design of Terahertz Corrugated Circular Waveguide Mode Converter

作　　者：兰峰[1] 杨梓强[1] 史宗君[1] 

机构地区：[1]电子科技大学物理电子学院,成都610054

出　　处：《电子科技大学学报》2015年第4期534-538,共5页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金重大项目培育项目(91438118);中央高校基本科研业务费专项资金(ZYGX2014J037)

摘　　要：提出一种基于复功率守恒技术(CCPT)的广义散射矩阵(GSM)优化方法设计太赫兹波纹圆波导模式变换器。与传统的基于耦合波理论(CWT)的优化方法不同,广义散射矩阵法对模式变换系统进行准确的全波分析,避免了耦合波方程组在计算反向波幅值时的数值计算困难,缩短了计算时间。广义散射矩阵法、耦合波法和HFSS仿真法结果吻合很好,前者耗费时间远小于后两者。该研究为太赫兹源的径向渐变波纹圆波导模式变换器研究提供了一种重要的理论分析手段。This paper presents the optimized design of THz ripple-wall mode converters in circular waveguide using generalized scattering matrix（GSM） method based on conservation of complex power technique（CCPT）. The GSM method, which is different from the traditional method of solving coupled mode equations, could give full-wave analysis for optimal design of the converter, thereby avoid difficulty in solving backward wave amplitude and shorten calculating time. The numerical result of GSM is in agreement with that of coupled wave theory（CWT） and HFSS simulation result. The elapsed time of the former is much less than the latter two. This work provides important theoretical reference and analytical method for designing ripple-wall mode converters in circular waveguide for millimeter wave and submillimeter wave sources.

关 键 词：波纹圆波导 耦合波理论 广义散射矩阵 太赫兹 

分 类 号：O44[理学—电磁学] TM15[理学—物理]