Spatiooral Talbot phenomenon using metamaterial composite right/left-handed leaky-wave antennas

  • J. S. Gómez-Díaz /
  • A. Alvarez-Melcon /
  • S. Gupta /
  • C. Caloz
Journal ar
Journal of Applied Physics
  • Volumen: 104
  • Número: 10
  • Fecha: 08 December 2008
  • ISSN: 00218979
  • Source Type: Journal
  • DOI: 10.1063/1.3013905
  • Document Type: Article
A spatialoral Talbot phenomenon, based on metamaterial composite right/left-handed (CRLH) leaky-wave antennas (LWAs), is presented. This phenomenon, reported in the microwave domain, is based on the combination of the conventional spatial monochromatic Talbot effect and the transient (polychromatic) character of the pulse radiation phenomenon in the LWA structure. When the elements of a periodic CRLH LWA array are fed simultaneously by an input pulse, the spatial beams corresponding to different temporal frequencies constructively interfere in space so as to form a self-imaged pattern constituted by narrow Talbot zones. This Talbot effect is spatialoral since the Talbot zones are localized both in space and time. The phenomenon is analyzed theoretically and validated numerically for the case of narrow-band pulses. © 2008 American Institute of Physics.

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