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, İtalya, 14 - 18 Eylül 2009, ss.1042-1045 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Torino
  • Basıldığı Ülke: İtalya
  • Sayfa Sayıları: ss.1042-1045
  • Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

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.