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dc.contributor.authorGómez Díaz, Juan Sebastián 
dc.contributor.authorGupta, Shulabh 
dc.contributor.authorÁlvarez Melcón , Alejandro 
dc.contributor.authorCaloz, Christophe 
dc.date.accessioned2011-01-25T13:12:31Z
dc.date.available2011-01-25T13:12:31Z
dc.date.issued2010-10
dc.identifier.citationGÓMEZ DÍAZ, J.S., GUPTA, S., ÁLVAREZ MELCÓN, A., CALOZ, C. Efficient time-domain analysis of highly dispersive linear and non-linear metamaterial waveguide and antenna structures operated in the impulse-regime. IET Microwaves, Antennas & Propagation, 4 (10): 1617 - 1625 , Octubre 2010. ISSN 1751-8725en_US
dc.identifier.issn1751-8725
dc.description.abstractIn this paper, a numerical method has been proposed for the analysis of highlydispersive linear and non-linear metamaterial structures. Initially, pulse propagation along non-linear composite right/left-handed transmission line (CRLH TL) has been carefully studied. For this purpose, a dispersive CRLH line has been loaded with hyper abrupt diodes to achieve non-linearity. The characteristic impedance and propagation constant of each unit cell of the CRLH TL is then varied at each time-step, and the nonuniform line is analyzed. A novel interpolation scheme, based on the smooth behaviour of the propagation constant with small variations of the shunt capacitor has been proposed. This scheme has provided an 80% reduction of the computational cost maintaining high accuracy. A general example which combines dispersion and nonlinearity has finally been presented, validated and discussed. Secondly, the impulseregime radiation of a leaky-wave antenna has been analyzed and employed to describe a real-time spectrogram analyzer (RTSA). A calibration method for the system, which takes into account the directivity variation of the antenna with frequency, has been introduced. Numerical results have shown that the proposed technique provides an extremely fast and accurate tool to characterize leaky-wave based RTSA systems.en_US
dc.description.sponsorshipThis work was partially supported by the Spanish Ministry of Education and Science under Grant FPU-AP2006-015 and with the Project TEC2007-67630-C03-02.en_US
dc.formatapplication/pdf
dc.language.isoengen_US
dc.publisherInstitution of Engineering and Technology (IET)en_US
dc.rightsCopyright © 2008 IETen_US
dc.titleEfficient time-domain analysis of highly dispersive linear and non-linear metamaterial waveguide and antenna structures operated in the impulse-regimeen_US
dc.typeinfo:eu-repo/semantics/articleen_US
dc.subject.otherTeoría de la Señal y las Comunicacionesen_US
dc.subjectAntena de fuga de ondasen_US
dc.subjectInterpolaciónen_US
dc.subjectMetamaterialesen_US
dc.subjectDominio del tiempo de análisisen_US
dc.subjectGuías de ondaen_US
dc.subjectEstructuras de antenaen_US
dc.subjectInterpolationen_US
dc.subjectMetamaterialsen_US
dc.subjectTime-domain analysisen_US
dc.subjectWaveguidesen_US
dc.subjectAntenna structuresen_US
dc.subjectLeaky wave antenna (LWA)
dc.identifier.urihttp://hdl.handle.net/10317/1563
dc.peerreviewsien_US
dc.contributor.investgroupGrupo de Electromagnetismo Aplicado a las Telecomunicaciones (GEAT)
dc.identifier.doi10.1049/iet-map.2009.0205
dc.identifier.urlhttp://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5609059&tag=1
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen_US
dc.type.versioninfo:eu-repo/semantics/acceptedVersionen_US


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