Wideband Rectangular Double-Ring Nanoribbon Graphene-Based Antenna for Terahertz Communications

Nickpay, Mohammad-Reza; Danaie, Mohammad; Shahzadi, Ali

doi:10.1080/03772063.2019.1661801

Cited by 40 publications

(14 citation statements)

References 30 publications

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“…In the past few years, most research has applied CNFs in the field of electrocatalysis [73], gas storage [74] and probe tips [75]. The use of CNFs composite has been investigated for bu [76]ilding antennas and RF circuit [52,64] in recent years. Lee, et al [75] fabricate CNF films via electrospinning technique and the result shows that relatively thick CNF (~430 μm) will perform an acceptable electric conductivity (ε = 6.30)) and electric permittivity (𝜎 = 0.75S/m) at 0.5 GHz, which makes it possible to use the composite of CNFs to produce an antenna related device i.e., signal attenuator [77].…”

Section: A One-dimensional Carbon-based Materialsmentioning

confidence: 99%

Carbon-Based THz Microstrip Antenna Design: A Review

Wang

Xie

et al. 2022

IEEE Open J. Nanotechnol.

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Increasing demands for high-speed wireless communication have stimulated the development of novel optoelectrical devices. Typically, terahertz (THz) wave, is much advantageous because of its relatively high-resolution transportation and strong penetrability property. One of the electromagnetic devices, the antenna, plays a key role in future THz devices. However, there are few review publishments related to carbon-based THz microstrip antenna designs. In this article, we list the basic figure of merits for evaluating antennas. We also show the developing microstrip antenna structures. Importantly, we summarize the current progress of THz microstrip antennas using different dimensional carbon materials, such as carbon nanotubes, graphene, and carbon foams. This review will lay a solid foundation for carbon-based THz microstrip antenna design, and furthermore provide novel sights for other THz antenna designs.

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Section: A One-dimensional Carbon-based Materialsmentioning

confidence: 99%

Carbon-Based THz Microstrip Antenna Design: A Review

Wang

Xie

et al. 2022

IEEE Open J. Nanotechnol.

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“…The graphene conductivity consists of a collection of two inter-band and intra-band terms. [36]. The surface conductivity of graphene is described as Eq.…”

Section: Graphene Conductivitymentioning

confidence: 99%

“…Graphene is a two-dimensional (2D) single-layer structure in which carbon atoms are coordinated into a honeycomb structure. In the far-infrared to THz band, graphene supports surface plasmonic polaritons (SPPs) [36][37][38][39][40][41][42] and they have strong electric field constraints and low loss optical attributes compared to other plasmonic metals such as gold and silver [43], [44]. Also, graphene plasmonic sensors can improve sensing characteristics due to the high amount of modal confinement in graphene-insulator surfaces [45].…”

Section: Introductionmentioning

confidence: 99%

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Highly Sensitive THz Refractive Index Sensor Based on Folded Split-Ring Metamaterial Graphene Resonators

2021

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A highly sensitive absorption-based sensor based on folded split-ring metamaterial graphene resonators (FSRMGRs) is designed, and its biomedical application in terahertz (THz) spectrum is investigated. The sensor has a nearly perfect absorption with a spectral absorption coefficient of 99.75% at 4 THz, with a high Q-factor (average) of 13.76. The resonance peak frequency is sensitive to the refractive index (RI) of the test medium (analyte) and a fairly high sensitivity of 851 GHz/RIU has been obtained. The specifications of the sensor can be tuned by an external DC-bias voltage applied to the graphene layer. According to the obtained results, the developed absorber appears to be a good candidate bio-sensing applications.

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“…However, the slotting will reduce the coupling efficiency of the antenna, and the tuning of this antenna is very difficult. In the reference [36], a wide-band, efficient and re-configurable antenna simultaneously with double rectangular rings for THz communications has been presented. In this proposed antenna topology, the width of the rings and the distance between them are used to achieve impedance matching and optimal efficiency.…”

Section: Data Comparison and Analysismentioning

confidence: 99%

Design of Terahertz Detection Antenna With Fractal Butterfly Structure

et al. 2021

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Terahertz (THz) technology can be widely used in radar, remote sensing, homeland security and counter-terrorism, high-secret data communication and transmission, atmospheric and environmental monitoring, real-time biological information extraction, and medical diagnosis. It is the frontier of current research. However, most of highly sensitive THz detectors work in a relatively narrow frequency range. It attracts great attention to design a high-gain terahertz antenna operates in a wide spectrum range. In this paper we propose a new structure of fractal butterfly antenna with high gain which can be used for broadband THz detection. This fractal butterfly antenna is constructed by independent fractal unit groups on butterfly antenna, which simplifies the antenna manufacturing process and reduces the manufacturing cost. The antenna can operate in the 0.1-10 THz frequency band, with impedance bandwidth of 85% resonated at 4.9 THz, return loss of as small as -33.59 dB, and maximum gain of 16.95 dB. Among the antenna with 3 to 4 fractal unit groups, the best operation band of the antenna is 6.2-6.4 THz. The proposed fractal butterfly antenna can effectively improve the performance of terahertz detectors, and provide the possibility for detection research in higher frequency bands.

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Wideband Rectangular Double-Ring Nanoribbon Graphene-Based Antenna for Terahertz Communications

Cited by 40 publications

References 30 publications

Carbon-Based THz Microstrip Antenna Design: A Review

Carbon-Based THz Microstrip Antenna Design: A Review

Highly Sensitive THz Refractive Index Sensor Based on Folded Split-Ring Metamaterial Graphene Resonators

Design of Terahertz Detection Antenna With Fractal Butterfly Structure

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