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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
Copyright 2007 IEEE. Reprinted from IEEE Transactions on Antennas and Propagation, Volume 55, Issue 6, June 2007, pages 1781-1788.

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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.

  • 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)
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