Abstract
Presented in this paper is a new approach to deriving a numerical absorbing condition (NABC) for mesh truncation in the Finite Difference/Finite Element Methods (FD/FEM) analysis of scattering and radiation by periodic structures. Through imposing the absorption condition on a selected set of Floquet models at the truncation boundary, the NABC is obtained. The proposed approach preserves the sparsity of the FD/FEM matrices, unlike the boundary element method or matching to Floquet mode series. The accuracy of the method has been demonstrated for a number of 2D examples. Extension of the present formulation to the full 3D formulation is currently under investigation and the initial results look quite promising.
| Original language | English |
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| Pages (from-to) | 2092-2095 |
| Number of pages | 4 |
| Journal | IEEE Antennas and Propagation Society, AP-S International Symposium (Digest) |
| Volume | 3 |
| State | Published - 1994 |
| Externally published | Yes |
| Event | Proceedings of the IEEE Antennas and Propagation International Symposium. Part 3 (of 3) - Seattle, WA, USA Duration: 19 Jun 1994 → 24 Jun 1994 |