Per citar aquest document: http://ddd.uab.cat/record/163130
Modeling metamaterial transmission lines loaded with pairs of coupled split-ring resonators
Su, Lijuan (Universitat Autònoma de Barcelona. Departament d’Enginyeria Electrònica)
Naqui Garolera, Jordi (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Mata Contreras, Francisco Javier (Universitat Autònoma de Barcelona. Departament d’Enginyeria Electrònica)
Martín, Ferran, (Martín Antolín) (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)

Data: 2015
Resum: A lumped-element equivalent circuit model of the unit cell of metamaterial transmission lines loaded with pairs of coupled split-ring resonators (SRRs) is presented. It is assumed that the dominant coupling mechanism between the SRRs forming the pair is magnetic, and that the distance between SRRs of adjacent cells is high enough to neglect such additional inter-resonator coupling. SRRs are oriented with their symmetry plane orthogonal to the line axis. Under these conditions, the line-to-SRR coupling is also magnetic, the electric coupling being negligible. The presented model accounts for the rupture of symmetry that can be caused, for instance, by asymmetric dielectric loading of the SRRs. Thus, the analysis is carried out on a general model where the SRRs of the pair have different inductance and capacitance. Then, different cases are studied, in particular a line with identical SRRs, and a line with different SRRs, but with the same resonance frequency. It is shown that coupling between SRRs tends to far or split the resonance frequencies of the loaded lines (transmission zeros), except for the symmetric case, where only one resonance (different to the one of uncoupled SRRs) appears. The model is validated by comparing circuit simulations using extracted parameters with electromagnetic simulations and experimental data.
Nota: Número d'acord de subvenció MICINN/TEC2010-17512
Nota: Número d'acord de subvenció MICINN/CSD2008-00066
Nota: Número d'acord de subvenció MINECO/TEC2013-40600-R
Nota: Número d'acord de subvenció AGAUR/2014/SGR-157
Nota: Número d'acord de subvenció AGAUR/2019/SGR-421
Drets: Tots els drets reservats
Llengua: Anglès
Document: article ; recerca ; submittedVersion
Matèria: Electromagnetic metamaterials ; Metamaterial transmission lines ; Split-ring resonators (SRRs)
Publicat a: IEEE antennas and wireless propagation letters, Vol. 14 (2015) , p. 68-71, ISSN 1536-1225

DOI: 10.1109/LAWP.2014.2355035


Pre-print
4 p, 2.0 MB

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 Registre creat el 2016-07-25, darrera modificació el 2016-09-20



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