Phys. Rev. Lett. 92, 117403 (2004) [4 pages]Overcoming the Diffraction Limit with a Planar Left-Handed Transmission-Line LensReceived 28 May 2003; published 18 March 2004 We report experimental results at 1.057 GHz that demonstrate the ability of a planar left-handed lens, with a relative refractive index of -1, to form images that overcome the diffraction limit. The left-handed lens is a planar slab consisting of a grid of printed metallic strips over a ground plane, loaded with series capacitors (C) and shunt inductors (L). The measured half-power beamwidth of the point-source image formed by the left-handed lens is 0.21 effective wavelengths, which is significantly narrower than that of the diffraction-limited image corresponding to 0.36 wavelengths. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.117403
DOI:
10.1103/PhysRevLett.92.117403
PACS:
78.20.Ci, 41.20.Jb, 42.25.Fx
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