Complementary perfectly matched layers to reduce reflection errors

Jian Ming Jin, Xin Qing Sheng, Weng Cho Chew

Research output: Contribution to journalArticlepeer-review


A new approach is proposed to reduce the reflection error of a perfectly matched layer (PML) in the frequency-domain finite-element solution of electromagnetics problems. The approach is based on the complementary nature of a PML backed by a perfect electric conductor (PEC) and one backed by a perfect magnetic conductor (PMC). By averaging the solutions obtained by PEC- and PMC-backed PML, the error is reduced by 20 log|R| dB, where R is the reflection coefficient of the PEC- or PMC-backed PML. Numerical results are presented to demonstrate the accuracy of the complementary PMLs.

Original languageEnglish (US)
Pages (from-to)284-287
Number of pages4
JournalMicrowave and Optical Technology Letters
Issue number5
StatePublished - Apr 5 1997


  • Absorbing boundary condition
  • Finite-element method
  • Perfectly matched layer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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