Ergül, ÖzgürGürel, Levent2016-02-082016-02-082009-09http://hdl.handle.net/11693/28675Date of Conference: 14-18 Sept. 2009Conference name: 2009 International Conference on Electromagnetics in Advanced ApplicationsWe present efficient solutions of electromagnetics problems involving realistic metamaterial structures using a low-frequency multilevel fast multipole algorithm (LF-MLFMA). Ordinary implementations of MLFMA based on the diago-nalization of the Green's function suffer from the low-frequency breakdown, and they become inefficient for the solution of metamaterial problems dis-cretized with very small elements compared to the wavelength. We show that LF-MLFMA, which employs multipoles explicitly without diagonalization, significantly improves the solution of metamaterial problems in terms of both processing time and memory. © 2009 IEEE.EnglishAccurate analysisDiagonalizationsElectromagneticsLow frequencyLow-frequency breakdownMetamaterial structuresMulti-level fast multi-pole algorithmMultipolesProcessing TimeDifferential equationsElectromagnetismGreen's functionMetamaterialsConference Paper10.1109/ICEAA.2009.5297789