A Fully High-Order Finite-Element Simulation of Scattering by Deep Cavities

Jianming Jin, Jian Liu, Zheng Lou, Charles S.T. Liang

Research output: Contribution to journalArticle

Abstract

A fully high-order finite element algorithm is presented for simulating electromagnetic scattering by a deep cavity using curvilinear tetrahedral elements. Unlike the previously developed algorithm based on mixed-order triangular prism elements, this new algorithm can significantly suppress numerical dispersion errors in all directions, thus resulting in a more accurate and efficient simulation of complex wave propagation inside a deep cavity. Moreover, the use of tetrahedral elements removes limitations on the modeling of complex cavities imposed by the use of triangular prism elements. Numerical examples and experimental results are presented to demonstrate the advantages of the new algorithm.

Original languageEnglish (US)
Pages (from-to)2420-2429
Number of pages10
JournalIEEE Transactions on Antennas and Propagation
Volume51
Issue number9
DOIs
StatePublished - Sep 1 2003

Keywords

  • Electromagnetic scattering
  • Finite element methods
  • Numerical analysis
  • Radar cross sections

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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