Spatial-Temporal Talbot Effects in Impulse-Regime Metamaterial Leaky-Wave Antennas
Konferenz: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
23.03.2009 - 27.03.2009 in Berlin, Germany
Tagungsband: EuCAP 2009
Seiten: 5Sprache: EnglischTyp: PDF
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Autoren:
Gomez-Daz, J. S.; Alvarez-Melcon, A. (Technical University of Cartagena, Campus Muralla del Mar-Antigones, Cartagena (Murcia), Spain)
Gupta, S.; Caloz, C. (Ecole Polytechnique de Montreal, 2500, Ch. de Polytechnique de Montreal, Quebec, H3T 1J4, Canada)
Inhalt:
A spatial-temporal Talbot phenomenon, based on metamaterial composite right/left-handed (CRLH) leaky-wave antennas (LWAs), is presented. The phenomenon is based on the combination of the regular spatial Talbot effect and the transient character of the pulse radiation phenomenon in the LWA structure, and it is localized both in space in time. The CRLH LWA scanning properties are used to obtain, for the first time in the microwave domain, a tunable Talbot effect as a function of frequency. A novel mathematical development is proposed to the analysis of the impulse-regime radiation of the CRLH LWA array. The presented Talbot phenomenon is analyzed theoretically and validated numerically for the case of narrow-band pulses.