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The finite element solution of dissipative electromagnetic surface waveguides
Author(s) -
McAulay A. D.
Publication year - 1977
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620110104
Subject(s) - dissipative system , finite element method , waveguide , dielectric , electromagnetic radiation , wave propagation , propagation constant , electromagnetic field , physics , surface wave , classical mechanics , materials science , optics , optoelectronics , quantum mechanics , thermodynamics
A finite element method is developed for investigating the propagation of high frequency electromagnetic waves along closed or open (surface) waveguides containing dissipative materials and having a cross section of arbitrary shape. The complex propagation constants and associated complex electromagnetic fields are determined as a function of frequency for possible modes of propagation. The method is verified by applying it to structures of simple shape for which analytical results may be calculated for comparison. Waveguides considered include a waveguide filled with dissipative material, a dissipative dielectric rod, a dielectric coated wire and a conducting wire.