Broadband MLFMA based on an approximate diagonalization of the three-dimensional Green's function

Date

2015-09-11

Author

Ergül, Özgür Salih

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We present an approximate diagonalization of the three-dimensional Green's function for straightforward broadband implementations of the multilevel fast multipole algorithm. The diagonalization is based on the use of scaled spherical functions and plane waves, leading to approximate but stable expansions for arbitrarily short distances with respect to wavelength. Despite its limited accuracy, the approximate diagonalization is easy to insert into existing MLFMA implementations for converting them into broadband solvers without reprogramming efforts. We demonstrate the effectiveness of the developed implementation on multiscale problems that are difficult to solve without low-frequency stabilizations.

Subject Keywords

Broadband communication, Green's function methods, MLFMA, Electromagnetics, Antennas, Standards, Optimized production technology

URI

https://hdl.handle.net/11511/42855

DOI

https://doi.org/10.1109/iceaa.2015.7297323

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

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Citation Formats

Ö. S. Ergül, “Broadband MLFMA based on an approximate diagonalization of the three-dimensional Green’s function,” 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42855.