Analysis and design of terahertz antennas based on plasmonic resonant graphene sheets

Tamagnone, Michele; Gómez‐Díaz, J. S.; Mosig, J. R.; Perruisseau‐Carrier, Julien

doi:10.1063/1.4768840

Cited by 246 publications

(149 citation statements)

References 20 publications

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“…A graphene sheet (a one-atom-thick carbon layer) is able to support surface plasmon modes at terahertz frequencies [19][20][21][22][23]. A recent work in [24] a discussed HM based on a semi-infinite stack of graphene-dielectric multilayers, studied at a temperature of 4 K, thus assuming graphene losses negligible, leading to purely real permittivity and wavenumbers.…”

Section: Introductionmentioning

confidence: 99%

Graphene-based tunable hyperbolic metamaterials and enhanced near-field absorption

Othman¹,

Guclu²,

Capolino³

2013

Opt. Express

258

158

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Abstract:We investigate a novel implementation of hyperbolic metamaterial (HM) at far-infrared frequencies composed of stacked graphene sheets separated by thin dielectric layers. Using the surface conductivity model of graphene, we derive the homogenization formula for the multilayer structure by treating graphene sheets as lumped layers with complex admittances. Homogenization results and limits are investigated by comparison with a transfer matrix formulation for the HM constituent layers. We show that infrared iso-frequency wavevector dispersion characteristics of the proposed HM can be tuned by varying the chemical potential of the graphene sheets via electrostatic biasing. Accordingly, reflection and transmission properties for a film made of graphene-dielectric multilayer are tunable at terahertz frequencies, and we investigate the limits in using the homogenized model compared to the more accurate transfer matrix model. We also propose to use graphene-based HM as a super absorber for near-fields generated at its surface. The power emitted by a dipole near the surface of a graphene-based HM is increased dramatically (up to 5 × 10 2 at 2 THz), furthermore we show that most of the scattered power is directed into the HM. The validity and limits of the homogenized HM model are assessed also for near-fields and show that in certain conditions it overestimates the dipole radiated power into the HM.

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Section: Introductionmentioning

confidence: 99%

Graphene-based tunable hyperbolic metamaterials and enhanced near-field absorption

Othman¹,

Guclu²,

Capolino³

2013

Opt. Express

258

158

View full text Add to dashboard Cite

show abstract

“…The antenna length is L = 5 µm and the plots correspond, from left to right, to 1 µm, 2 µm, 5 µm, 10 µm and infinitely wide patches. [14], which is reduced to a total efficiency of 4% when the impedance mismatch between the antenna and a hypothetical load is considered. However, the development of impedance matching circuits for graphene nano-antennas may help improve this low efficiency.…”

Section: Antenna Characterizationmentioning

confidence: 99%

Graphene-enabled wireless communication for massive multicore architectures

et al. 2013

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Abstract-Current trends in microprocessor architecture design are leading towards a dramatic increase of core-level parallelization, wherein a given number of independent processors or cores are interconnected. Since the main bottleneck is foreseen to migrate from computation to communication, efficient and scalable means of inter-core communication are crucial for guaranteeing steady performance improvements in many-core processors. As the number of cores grows, it remains unclear whether initial proposals, such as the Network-on-Chip (NoC) paradigm, will meet the stringent requirements of this scenario. This position paper presents a new research area where massive multicore architectures have wireless communication capabilities at the core level. This goal is feasible by using graphene-based planar antennas, which can radiate signals at the Terahertz band while utilizing lower chip area than its metallic counterparts. To the best of our knowledge, this is the first work that discusses the utilization of graphene-enabled wireless communication for massive multicore processors. Such wireless systems enable broadcasting, multicasting, all-to-all communication, as well as significantly reduce many of the issues present in massively multicore environments, such as data coherency, consistency, synchronization and communication problems. Several open research challenges are pointed out related to implementation, communications and multicore architectures, which pave the way for future research in this multidisciplinary area.

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“…The arrows indicate the real impedance W.P. [7]. (With permission from IEEE and AIP) In Reference [6,7], graphene-based antennas devised in microwave frequency and THz frequency are investigated.…”

Section: (With Permission From Ieee)mentioning

confidence: 99%

“…Therefore, a graphene antenna operates at the THz frequency using the negative imaginary conductivity characteristics of graphene, as shown in Figure 1. In Reference [6,7], graphene-based antennas devised in microwave frequency and THz frequency are investigated. A graphene-based patch antenna resonating at the microwave frequency features a radiation efficiency of 8% in Figure 2a.…”

Section: Graphenementioning

confidence: 99%

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Optically Transparent Nano-Patterned Antennas: A Review and Future Directions

et al. 2018

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Transparent antennas have been continuously developed for integration with solar cells, vehicular communications, and ultra-high-speed communications such as 5G in recent years. A transparent antenna takes advantage of spatial extensibility more so than all other antennas in terms of wide range of usable area. In addition, the production price of transparent antennas is steadily decreasing due to the development of nano-process technology. This paper reviews published studies of transparent antennas classified by various materials in terms of optical transmittance and electrical, sheet resistance. The transparent electrodes for the transparent antenna are logically classified and the transparent antennas are described according to the characteristics of each electrode. Finally, the contributions transparent antennas can make toward next-generation 5G high-speed communication are discussed.

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Analysis and design of terahertz antennas based on plasmonic resonant graphene sheets

Cited by 246 publications

References 20 publications

Graphene-based tunable hyperbolic metamaterials and enhanced near-field absorption

Graphene-based tunable hyperbolic metamaterials and enhanced near-field absorption

Graphene-enabled wireless communication for massive multicore architectures

Optically Transparent Nano-Patterned Antennas: A Review and Future Directions

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