Tunable Talbot imaging distance using an array of beam-steered metamaterial leaky-wave antennas

Juan Sebastian Gomez Diaz, A. Lvarez-Melcón, S. Gupta, C. Caloz

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

A tunable spatio-temporal Talbot imaging phenomenon is presented. This phenomenon is based on the radiation properties of an array of beam-steered metamaterial composite right-/left-handed leaky-wave antennas, which is excited by a modulated pulse. The scanning law property of these antennas is exploited to achieve off-axis radiation, which leads to a tunable Talbot distance, as a function of the input pulse modulation frequency. The proposed Talbot phenomenon is analyzed theoretically, taking into account the aberrations produced by higher-order terms present in the free-space transfer function. Numerical simulations confirm the self-imaging and pulse multiplication effects and their tunability capabilities as a function of frequency. Finally, the experimental results are included to confirm the phenomenon predicted.

Original languageEnglish (US)
Article number084908
JournalJournal of Applied Physics
Volume106
Issue number8
DOIs
StatePublished - Nov 10 2009
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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