Title :
Selection of proper modes of an NRD guide using a perturbing boundary
Author :
Lee, J.Y. ; Lee, J.H. ; Im, C.H. ; Kim, H.S. ; Choi, K. ; Jung, H.K.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea
fDate :
5/1/2003 12:00:00 AM
Abstract :
A novel method to remove unwanted modes in the analysis of nonradiative dielectric (NRD) guide is proposed. Those modes are originated by the compulsory truncation of an infinite boundary to restrict finite-element domain. It will be shown that unwanted modes can be filtered out by a special boundary concept named a perturbing boundary condition. This method is applied to obtaining the propagation constant of inhomogeneous NRD guides and NRD guides with a trapezoidal cross section of which analytic solutions do not exist.
Keywords :
finite element analysis; nonradiative dielectric waveguides; perturbation techniques; waveguide theory; NRD guide; finite-element domain; infinite boundary; inhomogeneous guides; nonradiative dielectric guide; perturbing boundary condition; propagation constant; trapezoidal cross section; unwanted modes; Boundary conditions; Dielectric losses; Finite element methods; Information analysis; Millimeter wave propagation; Millimeter wave technology; Propagation constant; Shape; Strips; Waveguide components;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.810339
