Performance analysis of graphene based nano dipole antenna on stacked substrate

Inum, Reefat; Rana, Md. Masud; Shushama, Kamrun Nahar

doi:10.1109/icecte.2016.7879574

Cited by 8 publications

(3 citation statements)

References 8 publications

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“…By increasing the chemical potential value from 0.2 to 0.5 eV, the beam width along with the gain of the antenna is increased. Reefat and coworkers presented a graphene dipole antenna designed on a stacked substrate as well as its chemical potential and relaxation time constant [111]. The gap between dipole arms is used to excite the antenna, which allows the graphene strips to propagate surface plasmons at terahertz frequencies.…”

Section: Graphene Resonant Terahertz Antennasmentioning

confidence: 99%

A Review on the Development of Tunable Graphene Nanoantennas for Terahertz Optoelectronic and Plasmonic Applications

Ullah

Witjaksono

Nawi

et al. 2020

Sensors

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Exceptional advancement has been made in the development of graphene optical nanoantennas. They are incorporated with optoelectronic devices for plasmonics application and have been an active research area across the globe. The interest in graphene plasmonic devices is driven by the different applications they have empowered, such as ultrafast nanodevices, photodetection, energy harvesting, biosensing, biomedical imaging and high-speed terahertz communications. In this article, the aim is to provide a detailed review of the essential explanation behind graphene nanoantennas experimental proofs for the developments of graphene-based plasmonics antennas, achieving enhanced light–matter interaction by exploiting graphene material conductivity and optical properties. First, the fundamental graphene nanoantennas and their tunable resonant behavior over THz frequencies are summarized. Furthermore, incorporating graphene–metal hybrid antennas with optoelectronic devices can prompt the acknowledgment of multi-platforms for photonics. More interestingly, various technical methods are critically studied for frequency tuning and active modulation of optical characteristics, through in situ modulations by applying an external electric field. Second, the various methods for radiation beam scanning and beam reconfigurability are discussed through reflectarray and leaky-wave graphene antennas. In particular, numerous graphene antenna photodetectors and graphene rectennas for energy harvesting are studied by giving a critical evaluation of antenna performances, enhanced photodetection, energy conversion efficiency and the significant problems that remain to be addressed. Finally, the potential developments in the synthesis of graphene material and technological methods involved in the fabrication of graphene–metal nanoantennas are discussed.

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Section: Graphene Resonant Terahertz Antennasmentioning

confidence: 99%

A Review on the Development of Tunable Graphene Nanoantennas for Terahertz Optoelectronic and Plasmonic Applications

Ullah

Witjaksono

Nawi

et al. 2020

Sensors

View full text Add to dashboard Cite

show abstract

“…In terahertz, to facilitate the manufacture and improve the performance of the antenna we use the characteristic impedance of graphene to have a UWB antenna. The use of graphene improves the gain as well as avoids the skin effect of the metal and decreases the loss of the antenna [17,18].…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Graphene Annular Ring Antenna for Medical and Imaging Applications

Krid¹,

Houaneb²,

Zairi³

2020

PIER M

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In this article, we design a reconfigurable bandwidth based on a concentric ring slot antenna using graphene. The developed antenna has good agreement between simulated and experimental results. The use of graphene in Terahertz (THz) has shown better performance than metal, and the variation in the chemical potential of graphene provides excellent performance properties, good return loss reaching −33.288 dB, bandwidth reconfiguration from 255 GHz to 406 GHz, and a good gain. These results are promising for THz applications and particularly for the application of medical imaging. The modeling and validation are performed using the CST Simulator.

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“…This tunable property of graphene conductivity is utilized to tune the antenna resonance frequency, which in turn paves the way to design frequency reconfigurable antennas in microwave and THz regimes. Graphene based antennas could provide several other benefits including ease of integration, transparency and mechanical flexibility [21]. The frequency dependent 2-D surface conductivity of a single layer graphene sheet can be modeled using the well-known Kubo formula as [22],…”

Section: Graphene Materialsmentioning

confidence: 99%

Development of Graphene Based Tapered Slot Antennas for Ultra-Wideband Applications

Inum¹,

Rana²,

Shushama³

2017

PIER C

Self Cite

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Abstract-In this paper, three different types of graphene based tapered slot antennas are designed for ultra-wideband (UWB) applications. The taper profiles for three antenna types are linear, exponential, and constant width. A single layer graphene sheet of 35 µm thickness is used to model the radiating element and feeding structure of the designed antennas. To feed the antennas, microstrip to slotline transition technique is adopted. An approximate analytical theory based on conical transmission line model is considered to authenticate the design of graphene based tapered slot antennas. Better impedance matching over 2-20 GHz is obtained by designing a balun in the form of a radial stub. Return loss, bandwidth, radiation pattern, and directive gain are the considered antenna performance parameters. Time domain solver of CST MWS software is used to evaluate the performances of linearly tapered slot antenna (LTSA), exponentially tapered slot antenna (Vivaldi), and constant width slot antenna (CWSA). The results obtained from CST are compared with that from HFSS to further validate the design. Simulation results with extensive parametric study confirm that the novel 2-D material graphene can be considered as a promising one to model UWB tapered slot antennas. Furthermore, the effectiveness of designed graphene based tapered slot antennas is revealed by comparing their performances with other existing UWB antennas. Moreover, as a UWB application, Vivaldi antenna shows promising results in microwave brain tumor detection.

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Performance analysis of graphene based nano dipole antenna on stacked substrate

Cited by 8 publications

References 8 publications

A Review on the Development of Tunable Graphene Nanoantennas for Terahertz Optoelectronic and Plasmonic Applications

A Review on the Development of Tunable Graphene Nanoantennas for Terahertz Optoelectronic and Plasmonic Applications

Reconfigurable Graphene Annular Ring Antenna for Medical and Imaging Applications

Development of Graphene Based Tapered Slot Antennas for Ultra-Wideband Applications

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