A Nonlinear Eigenvalue Hybrid FEM Formulation for Two Dimensional Open Waveguiding Structures
A non linear hybrid finite element formulation,for the two dimensional eigenvalue analysis of open waveguides is proposed. The infinite solution domain of this kind of problems is divided into two region using a fictitious cylindrical surface-C. Inside the surface-C the finite element method is employed. Outside the surface-C the infinite domain is modeled through an infinite sum of cylindrical harmonics. The two solutions are coupled considering the continuity of the tangential field components along the surface-C. The overall procedure ends up to a nonlinear eigenvalue problem of the form A(β) ·x=0 where β is the propagation constant along the axis of the waveguide. For the solution of the nonlinear eigenvalue problem the Regula Falsi method is considered. The solution procedure is based on the initial values provided from a linear approximation of the problem. Finally, the validity of the method is verified by comparison with measurements presented in the bibliography.
P.C.Allilomes G.A.Kyriacou
Democritus University of Thrace,Greece
国际会议
Progress in Electromagnetics Research Symposium 2005(2005年电磁学研究新进展学术研讨会)(PIERS 2005)
杭州
英文
620-624
2005-08-22（万方平台首次上网日期，不代表论文的发表时间）