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The Measured Electric Field Spatial Distribution within a Metamaterial Sub-Wavelength Cavity Resonator
Departmental Papers (ESE)
  • Thomas Hand, Duke University
  • Steven A Cummer, Duke University
  • Nader Engheta, University of Pennsylvania
Document Type
Journal Article
Date of this Version
6-1-2007
Comments
Copyright 2007 IEEE. Reprinted from IEEE Transactions on Antennas and Propagation, Volume 55, Issue 6, June 2007, pages 1781-1788.

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Abstract

Through experimental investigation, a thin subwavelength cavity resonator was physically realized using a bilayer structure composed of air and a negative permeability metamaterial structure one unit cell in thickness. We designed and built the metamaterial slab with periodic metallic ring structures and measured the spatial electric field magnitude in a cavity formed from this slab and a region of air, showing that a subwavelength cavity can be realized. The measured electric field magnitude distribution in the cavity matched very well with effective medium theory, showing that even a slab one unit cell in thickness may be effectively equivalent to a thin homogeneous medium as far as the construction of a sub-wavelength cavity is concerned, provided that the unit cell size is significantly smaller than the free space wavelength.

Keywords
  • cavity resonator,
  • metamaterials,
  • microwave cavities,
  • negative index of refraction,
  • negative permeability
Citation Information
Thomas Hand, Steven A Cummer and Nader Engheta. "The Measured Electric Field Spatial Distribution within a Metamaterial Sub-Wavelength Cavity Resonator" (2007)
Available at: http://works.bepress.com/nader_engheta/37/