Ultrawideband Absorbing Boundary Condition for Termination of Waveguiding Structures in FD-TD Simulations

Christopher E. Reuter, Rose M. Joseph, Eric T. Thiele, Allen Taflove, Daniel S. Katz

Research output: Contribution to journalArticlepeer-review

80 Scopus citations

Abstract

A new method for ultrawideband termination of waveguides in finite-difference time-domain (FD-TD) grids is presented. The Berenger perfectly matched layer (PML) absorbing boundary condition is applied to terminate both perfect electrically conducting (PEC) and dielectric waveguides in two dimensions. Reflections of less than -75 dB are obtained over the entire propagation regime. Evidence is presented that the PML ABC is effective even for the evanescent energy present below cutoff in PEC waveguides and the multimode propagation present in dielectric waveguides.

Original languageEnglish (US)
Pages (from-to)344-346
Number of pages3
JournalIEEE Microwave and Guided Wave Letters
Volume4
Issue number10
DOIs
StatePublished - Oct 1994

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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