中山大学学报自然科学版 ›› 2010, Vol. 49 ›› Issue (3): 28-33.

• 研究论文 • 上一篇    下一篇

关于电磁波在非理想导体边界柱形波导中的传播

林琼桂   

  1. (中山大学 物理科学与工程技术学院,广东 广州 510275)
  • 收稿日期:2009-07-19 修回日期:1900-01-01 出版日期:2010-05-25 发布日期:2010-05-25

On Propagation of Electromagnetic Waves in Cylindrical Waveguides with Imperfectly Conducting Walls

LIN Qionggui   

  1. (School of Physics and Engineering, Sun Yatsen University,Guangzhou 510275, China)
  • Received:2009-07-19 Revised:1900-01-01 Online:2010-05-25 Published:2010-05-25

摘要: 对非理想导体腔壁柱形波导的微扰法作了重新表述。所得计算修正本征值的方程形式上与过去的结果颇为不同。与过去的相应结果比较,该结果物理意义更清楚,形式更简洁凝练,且更便于实际计算。对过去忽视的一些特殊情况作了讨论。以同轴线为例给出了具体计算结果。

关键词: 波导, 微扰法, 有限电导率

Abstract:

The perturbative method for calculating the effect of imperfectly conducting walls on the propagation of electromagnetic waves in cylindrical waveguides is reformulated. The equation for calculating the corrected eigenvalues is obtained in a quite different form. In comparison with the previous result, it is physically more transparent, formally simpler and more compact, and more convenient for practical calculations. 〖JP2〗Special cases overlooked previously are discussed. Results on the coaxial line are presented.〖JP〗


Key words: waveguide, perturbative method, finite conductivity

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