Spatial-temporal Talbot effects in impulse-regime metamaterial leaky-wave antennas

Author

Gomez-Diaz, Juan Sebastian ; Gupta, S. ; Melcon, A. Alvarez ; Caloz, C.

Author_Institution

Campus Muralla del Mar-Antigones, Tech. Univ. of Cartagena, Cartagena

fYear

2009

fDate

23-27 March 2009

Firstpage

870

Lastpage

874

Abstract

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.

Keywords

Talbot effect; antenna radiation patterns; leaky wave antennas; metamaterials; microwave antenna arrays; spatiotemporal phenomena; CRLH LWA array; impulse-regime metamaterial leaky-wave antennas; impulse-regime radiation; metamaterial composite right/left-handed LWA; microwave domain; pulse radiation phenomenon; spatial-temporal Talbot effects; Dispersion; Extraterrestrial phenomena; Frequency; Green´s function methods; Interference; Leaky wave antennas; Metamaterials; Power system transients; Pulse modulation; Talbot effect;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on

Conference_Location

Berlin

Print_ISBN

978-1-4244-4753-4

Electronic_ISBN

978-3-00-024573-2

Type

conf

Filename

5067755