Preliminary study of AWE method for FEM analysis of scattering problems

Jing Ping Zhang, Jian Ming Jin

Research output: Contribution to journalArticlepeer-review

Abstract

The method of asymptotic waveform evaluation (AWE) is applied to the finite-element analysis of electromagnetic scattering problems. The finite-element mesh is terminated using a perfectly matched layer (PML), an absorbing boundary condition (ABC), or their combination. It is shown that the finite-element method (FEM) in conjunction with AWE can predict the radar cross section (RCS) over a frequency band whose bandwidth is highly dependent on the size of the scatterer. For a given order of AWE, the bandwidth decreases when the size of the scatterer increases. A simple binary search algorithm is described to apply AWE at multiple frequency points to generate an accurate solution over a specified frequency band. Numerical examples are given to demonstrate the performance of AWE in the RCS calculation by the FEM.

Original languageEnglish (US)
Pages (from-to)7-12
Number of pages6
JournalMicrowave and Optical Technology Letters
Volume17
Issue number1
DOIs
StatePublished - 1998

Keywords

  • Asymptotic waveform evaluation
  • Electromagnetic scattering
  • Finite-element method

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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