Hybridization of SBR and FEM for scattering by large bodies with cracks and cavities

Jian Ming Jin, Sean Ni, Shung Wu Lee

Research output: Contribution to journalConference articlepeer-review

Abstract

High-frequency methods are very efficient for electromagnetic scattering from large targets whose size are on the tens or hundreds of wavelengths. However, they cannot incorporate the contributions from small features such as cracks and gaps, therefore rendering them unable to accurately treat large and complex targets having these small features. In this paper, a robust hybrid technique to remove this limitation is presented. This new technique combines a high-frequency method with a low-frequency method in such manner that (1) it includes all significant interactions between the large target and the small features and (2) it permits the high-frequency and low-frequency methods to be computed separately. The low-frequency method used in this work is the finite element method (FEM), which is well-known for its ability to model complex geometries and inhomogeneous materials.

Original languageEnglish (US)
Pages (from-to)1476-1479
Number of pages4
JournalIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
Volume3
StatePublished - Jan 1 1995
EventProceedings of the 1995 IEEE Antennas and Propagation Society International Symposium. Part 4 (of 4) - Newport Beach, CA, USA
Duration: Jun 18 1995Jun 23 1995

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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