Dispersion Characteristics of Strip Dielectric Waveguides

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Original languageEnglish
Pages (from-to)349-352
Journal / PublicationIEEE Transactions on Microwave Theory and Techniques
Issue number2
Publication statusPublished - Feb 1991
Externally publishedYes


A simple and accurate dispersion relation is derived for the guided modes of a strip dielectric waveguide. This relation shows explicitly the effect of the width of the waveguide and involves only the solution for a single three-layer slab waveguide. It is discovered that there always exists a strip waveguide with a specific aspect ratio in which the Ex mn and Ey mnmodes propagate at the same phase velocity. © 1991 IEEE