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

Volume

39

Issue

3

fYear

2003

fDate

5/1/2003 12:00:00 AM

Firstpage

1246

Lastpage

1249

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2003.810339

Filename

1198445