journal6 ›› 2003, Vol. 24 ›› Issue (4): 43-47.

• Information and Engineering • Previous Articles     Next Articles

Mode Analyses of Quasi-Rectangular Waveguides by Using PMOBG


  1. (Microwave Engineering Dept.of Air Force Radar Academy,Wuhan 430010,Hubei China)
  • Online:2003-12-15 Published:2012-11-06
  • About author:FU Wen-bin(1945-),male,was born in Tianmen city,Hubei Province,professor of Microwave Engineering Dept.,Air Force Radar Academy,research area is electromagnetic field and microwave technology.
  • Supported by:

    Sponsored by Fundation of State Lab of Advanced Technology for Material Synthesis and Processing

Abstract: Perturbation method of boundary geometry (PMOBG) is used in rectangular waveguides with one-dimension perturbed walls and mode analyses are made.The boundary conditions are transformed into perturbation form firstly.Then the governing equation is separated into ε0 and ε1 order problem by using the method of strained parameters.Finally the solution is obtained via the solvability conditions of differential equation.Moreover,the effect of boundary perturbation on mode degeneration,transmitting parameters and field structure is discussed by comparing with regular rectangular waveguides.The results show that the effect is able to come down to analyzing two perturbation factors,i.e.perturbation factor of boundary geometry (PFBG) and perturbation factor of relative cut-off wavelength (PFRCW).

Key words: quasi-rectangular waveguide, mode analysis, Perturbation method of boundary geometry (PMOBG)

WeChat e-book chaoxing Mobile QQ