Efficient modeling of novel uniplanar left-handed metamaterials

Yunchuan Guo, George Goussetis, Alexandros P Feresidis, J C Vardaxoglou

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39 Citations (Scopus)

Abstract

This paper presents an efficient. modeling technique for the derivation of the dispersion characteristics of novel uniplanar metallodielectric periodic structures. The analysis is based on the method of moments and an interpolation scheme, which significantly accelerates the computations. Triangular basis functions are used that allow for modeling of arbitrary shaped metallic elements. Based on this method, novel uniplanar left-handed (LH) metamaterials are proposed. Variations of the split rectangular-loop element printed on grounded dielectric substrate are demonstrated to possess LH propagation properties. Full-wave dispersion curves are presented. Based on the dual transmission-line concept, we study the distribution of the modal fields And the variation of series capacitance and shunt inductance for all the proposed elements. A verification of the left-handedness is presented by means of full-wave simulation of finite uniplanar arrays using commercial software (HFSS). The cell dimensions are a small fraction of the wavelength (approximately lambda/24) so that the structures can he considered as a homogeneous effective medium. The structures are simple, readily scalable to higher frequencies, and compatible with low-cost fabrication techniques.

Original languageEnglish
Pages (from-to)1462-1468
Number of pages7
JournalIEEE Transactions on Microwave Theory and Techniques
Volume53
Issue number4
DOIs
Publication statusPublished - Apr 2005

Keywords

  • Rao-Wilton-Glisson (RWG) basis function
  • transmission line
  • negative refractive index
  • metamaterials
  • media
  • method of moments (MoM)
  • moments
  • left-handed (LH) materials

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