Super-resolution characteristics based on time-reversed single-frequency electromagnetic wave

Huilin Tu, Shaoqiu Xiao, Dominique Lesselier and Mohammed Serhir

Journal of Electromagnetic Waves and Applications, 2016, vol. 30, issue 13, 1670-1680

Abstract: A sub-wavelength three-antenna array that is able to perform super-resolution focusing with single-frequency signal excitations is investigated using time-reversal. The antenna array is loaded with a set of uniformly distributed thin metal wires, which when combined with single-frequency electromagnetic waves from a time-reversal mirror yields a 1/35 wavelength super-resolution focusing at the targeted antenna. The length of the metal wires in particular determines the frequency band enabling super-resolution performance. The results have significance for the super-resolution investigation of multi-band compact antenna arrays involving micro-structures, with potential linkage with recent studies on super-resolution mechanisms in deterministic complex media.

Date: 2016
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DOI: 10.1080/09205071.2016.1210037

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Journal of Electromagnetic Waves and Applications is currently edited by Mohamad Abou El-Nasr and Pankaj Kumar Choudhury

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