北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (5): 80-83.doi: 10.13190/jbupt.201005.80.zhaohj

• 论文 • 上一篇    下一篇

周期线性传播结构中电磁场的模式匹配

赵海军1,崔梦天2,李明东1,蒲斌1   

  1. 1西华师范大学 计算机学院; 2西南民族大学 计算机科学与技术学院
  • 收稿日期:2009-12-01 修回日期:2010-03-09 出版日期:2010-08-28 发布日期:2010-06-15
  • 通讯作者: 赵海军 E-mail:zhaohai_jun@163.com
  • 基金资助:

    四川省科技攻关项目

Mode Matching of Electromagnetic Fields in PeriodicLinear TravellingWave Structures

  • Received:2009-12-01 Revised:2010-03-09 Online:2010-08-28 Published:2010-06-15

摘要:

为了对周期性盘荷圆波导中的电磁场进行分析和描述,提出了采用模式匹配技术,并根据波导模式表示出电磁场. 首先在波导中考虑一个专门的盘荷隔板,由入射模引起的反射问题可采用模式匹配技术来解决;然后得到周期性负载波导的矩阵特征值方程;最后由方程的解可得到场结构的传播曲线. 实验结果表明,每种模式都能与边界条件匹配,利用匹配方法分析周期线性结构中的场分布是可靠的.

关键词: 电磁场, 特征值, 特征函数, 边界条件, 周期线性结构

Abstract:

For analysis and description of the electromagnetic field in a periodically diskloaded circular waveguide, a modematching technique is introduced and the electromagnetic field is expressed according to the waveguide modes. The particular way is that a specific diskloaded diaphragm is considered in the waveguide and the reflection problem arising from one incident is solved using the modematching technique. Thereafter, a matrix eigenvalue equation is derived for the periodically loaded waveguide. Solution of this equation yields the dispersion curve for the field structure. Experiment shows that each mode matches the boundary conditions and the matching technique used to analyze the electromagnetic field distribution in periodic linear travellingwave.

Key words: electromagnetic field, eigenvalue, eigenfunction, boundary condition, periodic linear structures