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Magnification of subwavelength field distributions at microwave frequencies using a wire medium slab operating in the canalization regime

2007; American Institute of Physics; Volume: 91; Issue: 10 Linguagem: Inglês

10.1063/1.2767996

1520-8842

Pekka Ikonen, Constantin Simovski, Sergei Tretyakov, Pavel A. Belov, Yang Hao,

Plasmonic and Surface Plasmon Research

Authors demonstrate numerically the magnification of subwavelength field pattern using a wire medium slab operating in the canalization regime. The magnifying slab is implemented by radially enlarging the distance between adjacent wires, and the operational frequency is tuned to coincide with the Fabry-Pérot resonance condition. The near-field pattern of a complex-shaped source is canalized over an electrical distance corresponding roughly to three wavelengths (3λ), and the pattern details are magnified by a factor of 3. The performance is also studied at several frequencies deviating from the one of the Fabry-Pérot resonance.