Graphene nanoantennas with different shapes

Costa, Karlo Q. da; Dmitriev, Victor; Nascimento, Clerisson; Silvano, Gustavo L.

doi:10.1109/imoc.2013.6646455

Cited by 13 publications

(11 citation statements)

References 10 publications

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“…In Figure 5 a comparison between the spectra of square and circular ring graphene nanoparticles is reported. As previously analyzed in [6], also for the ring particles the square shapes allow to obtain a higher magnitude compared to the circular one.…”

Section: Effect Of the Geometrical Parametersmentioning

confidence: 59%

“…Therefore, several researchers have investigated novel designs of nanoparticles, and all these results will prove useful in the design of future graphene-based nanoparticles for wireless nanoscale communications. For example, in [6] the authors investigate common shapes of graphene nanoparticles (i.e., rectangular and circular geometries) in TeraHertz band. They conclude that the absorbing cross section presents maximum values when the electric field polarization of the incident plane wave is tangential to the antenna's surface, and minimum values when this polarization is normal.…”

Section: Introductionmentioning

confidence: 99%

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Electromagnetic Analysis of Graphene Nanoparticles Operating in the TeraHertz Band

Iovine¹,

Tarparelli²,

Vegni³

2014

ANP

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In this work electromagnetic properties of a new type of graphene nanoparticles are investigated. The particles consist of graphene circular and square rings, embedded in a dielectric environment. The electromagnetic behavior in terms of resonant frequency position, magnitude and amplitude width for the absorption cross-section and the near electric field distribution are evaluated. Moreover, the influence of the geometrical parameters is also evaluated. The electromagnetic analysis is derived through proper full-wave numerical simulations. Numerical results show that the nanoparticles can be successfully used for the development of future graphene-based antennas operating in the TeraHertz Band.

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Section: Effect Of the Geometrical Parametersmentioning

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Electromagnetic Analysis of Graphene Nanoparticles Operating in the TeraHertz Band

Iovine¹,

Tarparelli²,

Vegni³

2014

ANP

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“…The ground plane is placed on the bottom of this layer. The conducting patch generally can be designed using different shapes [26]. Two typical microstrip patch antenna topologies are chosen for their simplicity and ease of fabrication: a rectangular-shaped and an elliptical-shaped patch antenna, and both models are used to validate the calculated surface properties in the previous section.…”

Section: Geometrical Parameters Of the Proposed Patch Antennasmentioning

confidence: 99%

The Performance Improvement of THZ Antenna via Modeling and Characterization of Doped Graphene

Gatte¹,

Soh²,

Rahim³

et al. 2016

PIER M

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Abstract-The improvement of Terahertz (THz) antenna requires efficient (nano)materials to operate within the millimeter wave and THz spectrum. In this paper, doped graphene is used to improve the performance of two types of patch antennas, a rectangular and an elliptical antenna. The surface conductivity of conventional (non-doped) graphene is first modeled prior to the design and simulation of the two graphene based antennas in an electromagnetic solver. Next, different graphene models and their corresponding surface conductivities are computed based on different bias voltages or chemical doping. These configurations are then benchmarked against a similar antenna based on conventional metallic (copper) conductor to quantify their levels of performance improvement. The graphene based antennas showed significant improvements for most parameters of antenna than that of the conventional antenna. Besides that, the higher chemical potentials resulting from higher biasing voltages also resulted in this trend. Finally, the elliptical patch graphene antenna indicated better reflection performance, radiation efficiency and gain than a rectangular patch operating at the same resonant frequency.

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“…A modelagem do grafeno se dá através da equação da condutividade elétrica superficial que leva em consideração os efeitos de intrabanda da equação de Drude [6][7]. A Perfectly Matched Layer (PML), necessária para absorver as ondas refletidas pelas fronteiras por condição de espalhamento, é discretizada usando swept que seriam como folhas.…”

Section: Modelagem Teóricaunclassified

Simulação de Dipolos Retangulares de Grafeno na Faixa de Terahertz no COMSOL

Soares¹,

Azevedo²,

Costa³

2015

Anais De XXXIII Simpósio Brasileiro De Telecomunicações

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Resumo-Neste trabalho é apresentado um estudo teórico de dipolos de grafeno utilizando o software COMSOL. São analisadas antenas na faixa do terahertz com diferentes dimensões e alimentadas por fonte de tensão. Os resultados obtidos mostram uma boa concordância quando comparados com os resultados calculados com um programa baseado no método dos momentos (MatLab) e com dados existentes na literatura. Palavras-Chave-Dipolos de grafeno, radiação na faixa do terahertz, COMSOL, antenas.

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Graphene nanoantennas with different shapes

Cited by 13 publications

References 10 publications

Electromagnetic Analysis of Graphene Nanoparticles Operating in the TeraHertz Band

Electromagnetic Analysis of Graphene Nanoparticles Operating in the TeraHertz Band

The Performance Improvement of THZ Antenna via Modeling and Characterization of Doped Graphene

Simulação de Dipolos Retangulares de Grafeno na Faixa de Terahertz no COMSOL

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