Journal
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume 51, Issue 1, Pages 130-137Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2003.808517
Keywords
Dirichlet-Neumann map; finite element method; 2-D cavity
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In this paper, a finite element method (FEM) is implemented to compute the radar cross section of a two-dimensional (2-D) cavity embedded in an infinite ground plane. The method is based on the variational formulation. which uses the Fourier transform to couple the fields outside the cavity and those inside the cavity; hence, the scattering problem can be reduced to a bounded domain. The convergence of the discrete finite element problem is analyzed. Numerical results are presented and compared with those obtained by the standard finite element-Green function method and by the 2-D integral equation method.
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