Comments on and extensions of "a note on the application of edge-elements for modeling three-dimensional inhomogeneouslyfilled cavities"

Davidson D.B. (1998)


Some comments are made on the above paper1 and a typographical error is corrected. Eigenvalue solutions for three-dimensional (3-D) cavities computed using an independently implemented finiteelement code using edge-based elements are reported as verification of the tabulated formulas in this paper. The question of "trivial" eigenvalues is briefly addressed. The extension of the tabulated formulas to diagonally anisotropic media is presented; it is shown to be very straightforward. Such media currently have significant applications as artificial absorbers in finite-element meshes. © 1998 IEEE.

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