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Tunable Talbot imaging distance using an array of beam-steered metamaterial leaky-wave antennas
J. Appl. Phys. 106, 084908 (2009); doi:10.1063/1.3213382
Published 29 October 2009
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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.
©2009 American Institute of Physics
| History: | Received 19 February 2009; accepted 7 August 2009; published 29 October 2009 |
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http://link.aip.org/link/?JAPIAU/106/084908/1 |
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0021-8979 (print)
1089-7550 (online)
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