Hybridization of a boundary element method with the finite element method in electromagnetics

Constantine Balanis, A. C. Polycarpou, M. N. Vouvakis, C. R. Birtcher

Research output: Contribution to journalConference articlepeer-review


A three-dimensional finite element method hybridized with the spectral and spatial domain method of moments is presented for the analysis of ferrite-tuned cavity-backed slot antennas. The cavity, which is partially filled with magnetized ferrite layers, is flush mounted on an infinite ground plane with possible dielectric or magnetic overlay. The antenna operates primarily in the ultra high frequency band. The finite element method is used to solve for the electric field distribution inside the cavity whereas the spectral domain approach is used to solve for the exterior region. An asymptotic extraction of the exponential behavior of the Green's function followed by a spatial evaluation of the resulting integral is used to improve computational speed. Radar cross section of ferrite-tuned cavity-backed slots are calculated for various biasing conditions. Numerical results are compared with data from the literature.

Original languageEnglish (US)
Pages (from-to)195-204
Number of pages10
JournalInternational Series on Advances in Boundary Elements
StatePublished - Dec 1 2001
EventTwenty-Third International Conference on the Boundary Element Method, BEM XXIII - Lemnos, Greece
Duration: May 7 2001May 9 2001

ASJC Scopus subject areas

  • Engineering(all)


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