Loop-tree free augmented equivalence principle algorithm for low-frequency problems

Zu Hui Ma, Li Jun Jiang, Weng Cho Chew

Research output: Contribution to journalArticlepeer-review


In this article, we describe a newly developed integral equation domain decomposition method for solving complex low frequency electromagnetic problems. This method is based on low frequency augmented equivalence principle algorithm (EPA) with the augmented electric field integral equation (A-EFIE). The A-EFIE provides a stable solution in the low-frequency regime as it includes both charge and current as unknowns to avoid the imbalance between the vector potential and the scalar potential. Based on similar idea, the augmented EPA can suppress the projection error resulting from low-frequency problems of the normal EPA. Combining these two methods, the proposed algorithm can be used in domain decomposition problems and is numerically stable at low frequencies. Several numerical examples are provided to verify its validity.

Original languageEnglish (US)
Pages (from-to)2475-2479
Number of pages5
JournalMicrowave and Optical Technology Letters
Issue number10
StatePublished - Oct 2013
Externally publishedYes


  • augmented-electric field integral equation
  • domain decomposition method
  • equivalence principle algorithm

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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