Spatio-Temporal Talbot Phenomenon using Metamaterial Composite Right/Left-Handed Leaky-Wave Antennas
Grupo de investigación
Grupo Electromagnetismo Aplicado a las TelecomunicacionesÁrea de conocimiento
Teoría de la Señal y las ComunicacionesPatrocinadores
Ministerio de Educación y Ciencia, Ref. TEC2007-67630-C03-02Fecha de publicación
2008-11-17Editorial
American Institute of PhysicsCita bibliográfica
GÓMEZ GARCÍA, J.S., ÁLVAREZ MELCÓN, A., GUPTA, S., CAKIZ, C. Spatio-Temporal Talbot Phenomenon using Metamaterial Composite Right/Left-Handed Leaky-Wave Antennas. Journal of applied physics, 2008, vol. 104, p. 104901-104901-7. ISSN 1089-7550Revisión por pares
SIPalabras clave
MetamaterialCRLH transmission lines
Talbot effect
Leaky-wave antenna
Resumen
A spatial-temporal 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 spatial-temporal
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.
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