Mode conversion and leaky-wave excitation at open-end coupled-microstrip discontinuities

J.L. Cina, L. Carin

Research output: Contribution to journalArticlepeer-review


The method of moments (MoM) is used to study mode conversion and leaky-wave excitation at an asymmetric coupled-microstrip discontinuity. The results show that significant mode conversion can occur at such discontinuities and that dominant leaky-wave modes can be excited strongly. Numerical issues with regard to the MoM analysis of such discontinuities are addressed as well, and for some examples it is shown that inclusion of a complete-domain basis function for the leaky mode improves numerical stability dramatically.
Original languageEnglish (US)
Article number414542
Pages (from-to)2066-2072
Number of pages7
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number9
StatePublished - Sep 1 1995
Externally publishedYes


  • Message-oriented middleware
  • Transmission line discontinuities
  • Transmission lines
  • Planar transmission lines
  • Surface waves
  • Couplings
  • Microstrip components
  • Cutoff frequency
  • Coplanar waveguides
  • Circuits


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