EFFICIENT SOLUTIONS OF METAMATERIAL PROBLEMS USING A LOW-FREQUENCY MULTILEVEL FAST MULTIPOLE ALGORITHM


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Erguel O. , Gurel L.

PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER, vol.108, pp.81-99, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 108
  • Publication Date: 2010
  • Doi Number: 10.2528/pier10071104
  • Title of Journal : PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER
  • Page Numbers: pp.81-99

Abstract

We present fast and accurate sloutions of electromagnetics problems involving realistic metamaterial structures using a lowfrequency multilevel fast multipole algorithm (LF-MLFMA). Accelerating iterative solutions using robust preconditioning techniques may not be sufficient to reduce the overall processing time when the ordinary high-frequency MLFMA is applied to metamaterial problems. The major bottleneck, i.e., the low-frequency breakdown, should be eliminated for efficient sloutions. We show that the combination of an LF-MLFMA implmentation, we demonstrate how the transmission properties of metamaterial walls can be enhanced with randomly-oriented unit cells.