SEMCAD X Microwave: Enhanced Simulation of Waveguide Structures

TitleSEMCAD X Microwave: Enhanced Simulation of Waveguide Structures
Publication TypeJournal Article
Year of Publication2011
AuthorsOfli, E., P. Crespo-Valero, J. A. Ruiz-Cruz, C. A. Leal-Sevillano, J. R. Montejo-Garai, and J. M. Rebollar
JournalMicrowave Engineering Europe
VolumeSeptember
Pagination12-15
ISSN0332-1649
AbstractA general and rigorous formulation is proposed for the analysis of hollow metallic waveguides from the gigahertz to the terahertz band. The analysis is based on a hybrid mode formulation and the Drude model for the dielectric permittivity of metallic conductors. The obtained results for the circular waveguide are compared with the classical microwave approach (surface impedance approximation or Leontovich condition). The validity range of the surface impedance approximation in both the propagation constant and the electromagnetic field pattern is studied. As a consequence, a direct relation between the error in the propagation constant and the electromagnetic field configuration is shown. Moreover, this formulation shows the evolution in the field pattern: from TE=TM modes at microwaves to the so-called Surface Plasmon Polariton at terahertz frequencies
URLhttp://www.microwave-eetimes.com/en/magazine/mwee-2010.html