Abstract
The problem of diffraction of a cylindrical wave by a plate whose medium has a negative refractive index (a metamaterial) is numerically solved. The near and far fields are investigated for the case when a cylindrical wave source is located near the narrow butt-end of a long plate and when the metamaterial of the plate has various values of the permittivity and permeability. The results obtained are interpreted in terms of the geometric optics. It is shown that a plate made from such a metamaterial can be applied for fabricating antennas with multi- and single-lobe patterns.
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