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Near-field enhancement using uniaxial wire medium with impedance loadings

Kaipa, C. S. R. ; Yakovlev, A. ; Silveirinha, M. G. ; Maslovski , S.

Near-field enhancement using uniaxial wire medium with impedance loadings, Proc Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS, St. Petersburg, Russia, Vol. 1, pp. 472 - 474, September, 2012.

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Abstract
Uniaxial wire-medium slab loaded with patches and impedance insertions (as lumped loads) is proposed for the resonant amplification of evanescent waves. The analysis is based on the nonlocal homogenization model for the mushroom structure with a generalized additional boundary condition for loaded vias. It is shown that by appropriately tuning the value of the lumped capacitance, it is
possible to achieve a flat dispersion behavior for surface waves resulting in a significant amplification of the near field.