作者：高博, 童玲, 张伟静

作者单位：电子科技大学自动化工程学院, 四川成都 610054

关键词：滤波器; 微带线等效波导模型; 模式匹配法; Matlab; 微带线不连续性

摘要：

微带线介质填充的不均匀性增加了分析其场结构和不连续性的难度。为了解决这一问题,本文采用微带线等效波导模型与模式匹配相结合的方法,分析了一种简单微带低通滤波器。从文中可以看出,利用该方法分析微带滤波器,计算速度有较大的提高,同时将模式匹配法的数值计算结果与常用的微波仿真软件cst的仿真结果相比对,两者吻合的很好,证明了该方法的正确性。

Mode-matching method to analyse a lowpass microstrip filter

GAO Bo, TONG Ling, ZHANG Wei-jing

College of Automation Engineering, University of Electronic Science and Techonlogy, Chengdu 610054, China

Abstract: Analysis of field and discontinuities in micro-strip is very difficult because of its unique structure.In this paper,a waveguide model and mode matching method are used to analyse a low-pass microstrip filter.The solving speed was improved.In the end of this paper,the result getting from this method was compared with the CST result.Both of them matched well.

Keywords: Filter; Microstrip waveguide model; Mode-matching; Matlab; Microstrip discontinuities

2007, 33(2): 96-98  收稿日期: 2006-8-23;收到修改稿日期: 2006-11-2

基金项目: 

作者简介: 高博(1981-),男,硕士研究生,主要从事微波无源器件的理论研究。

参考文献

[1] 甘本拔.现代微波滤波器的结构与设计[M].北京:科学出版社, 1973.
[2] 张本全.微波无源器件设计中的模式匹配法研究[A].中国优秀博硕士学位论文全文数据库[C].2004, 3.
[3] 郑文彬.迭代频域反卷积滤波器的参数分析[J].中国测试技术, 2005, 31(3):47-49.
[4] G. Kompa and R Mehran, Planar Waveguide Model for Calculating Microstrip Components[J].Electron.Lett, 1975, 11(9):459-460.
[5] I.Wolff, G.Kompa, R.Mehran.Calculation Method for Micro Strip Discontinuities and T-junctions[J].Electron.Lett., 1972, 8(4):177-179.
[6] E. Kuhn, A Mode-matching Method for Solving Field Problems in Waveguide and Resonator Circuits[J].Arch. Elek.Bertraouna, 1973, 27(12):511-513.
[7] TAK Sum Chu, Tatsuo Itoh, Comparative Study of Mode-Matching Formulations for Microstrip Discontinuity Problems[J].IEEE Trans, 1985, 33(10):1018-1023.
[8] TAK Sum Chu, Tatsuo Itoh, Generalized Scattering Matr ix Method for Analysis of Cascaded and Offset Microstrip Step Discontinuities[J].IEEE Trans, 1986, 34(2):280-284.
[9] Wolfgang Menzel and Ingo Wolff, A Method for Calculating the Frequency-Dependent Properties of Microstrip Discontinuities[J].IEEE Trans, 1977, 25:107-112.