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Enhancing the accuracy of the interpolations and anterpolations in MLFMA
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Date
2006-01-01
Author
Ergül, Özgür Salih
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We present an efficient technique to reduce the interpolation and anterpolation (transpose interpolation) errors in the aggregation and disaggregation processes of the multilevel fast multipole algorithm (MLFMA), which is based on the sampling of the radiated and incoming fields over all possible solid angles, i.e., all directions on the sphere. The fields sampled on the sphere are subject to various operations, such as interpolation, aggregation, translation, disaggregation, anterpolation, and integration. We identify the areas on the sphere, where the highest levels of interpolation errors are encountered. The error is reduced by employing additional samples on such parts of the sphere. Since the interpolation error is propagated and amplified by every level of aggregation, this technique is particulary useful for large problems. The additional costs in the memory and processing time are negligible, and the technique can easily be adapted into the existing implementations of MLFMA.
Subject Keywords
Electrical and Electronic Engineering
URI
https://hdl.handle.net/11511/40664
Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
DOI
https://doi.org/10.1109/lawp.2006.885010
Collections
Department of Electrical and Electronics Engineering, Article
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Ö. S. Ergül, “Enhancing the accuracy of the interpolations and anterpolations in MLFMA,”
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
, pp. 467–470, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40664.