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Numerical analysis of uniform rectangular waveguides filled by inhomogeneous dielectrics
Author(s) -
Toscano Alessandro,
Bilotti Filiberto,
Vegni Lucio
Publication year - 2002
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10446
Subject(s) - microwave , waveguide , permittivity , dielectric , transverse plane , cutoff frequency , cutoff , numerical analysis , optics , relative permittivity , materials science , computational physics , physics , mathematical analysis , mathematics , engineering , optoelectronics , structural engineering , quantum mechanics
A numerical analysis of a uniform rectangular waveguide filled by an inhomogeneous dielectric with a continuous spatial variation of the relative permittivity is presented in this Letter. The proposed method, based on a method‐of‐moments (MoM) solution of the differential equations for TE, LSE, and LSM modes, is applied to find out the cutoff frequencies of the waveguide. Some numerical examples are also presented, considering both continuous and stepped variations of the permittivity along a transverse direction. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 34: 313–316, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10446

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