Fast and Accurate Analysis of Complicated Metamaterial Structures Using a Low-Frequency Multilevel Fast Multipole Algorithm


Erguel O. , Guerel L.

International Conference on Electromagnetics in Advanced Applications (ICEAA 2009), Torino, Italy, 14 - 18 September 2009, pp.1042-1045 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Torino
  • Country: Italy
  • Page Numbers: pp.1042-1045

Abstract

We 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 diagonalization of the Green's function suffer from the low-frequency breakdown, and they become inefficient for the solution of metamaterial problems discretized 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.