Analysis of multiband graphene-based terahertz square-ring fractal antenna

Mezache, Zinelabiddine

doi:10.3116/16091833/21/2/93/2020

Cited by 6 publications

(6 citation statements)

References 12 publications

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“…According to the Pythagoras Tree Fractal antenna performance analysis (see Table 3), four bands were obtained at 4.975THz, 5.38THz, 6.73THz and 7.61THz. The performance of this antenna at each band, return loss, efficiency, bandwidth is given in Table 3, and compared to results already published [2], [10].…”

Section: Resultsmentioning

confidence: 93%

“…For example (see Table 3), a silicon (the dielectric permittivity 11.9) substrate with the thickness 45 µm produces the antenna resonate at two bands [2]. In the literature [10], the fractal square-ring geometry and a thin (3.25 µm) silicon substrate are used to provide the antenna resonances at two or three frequency bands. In this research the Pythagoras Tree Fractal (4 th order) patch is considered on a SiO2 substrate (dielectric permittivity The study provides insights into the design and performance of fractal antennas with graphene and thin substrates for THz applications.…”

Section: Resultsmentioning

confidence: 99%

“…The replacement of metal radiating elements by graphene in THz frequencies is a solution proposed by several research teams. Indeed, the very high mobility allows graphene to support the propagation of the Surface Plasmon Polaritons (SPPs) waves and the resulting lower plasma frequency allows the graphene of a few micrometers to resonate in the terahertz band [1][2][3][4][5][6][7][8][9][10]. The developments of dual bands graphene-based THz antennas are considered [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Graphene Pythagoras Tree Fractal Antenna with Thin SiO₂ Substrate in Terahertz Regime

Hafdi

Mezache

Tao

et al. 2023

Annals of West University of Timisoara - Physics

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The Pythagoras Tree Fractal patch is considered on a SiO2 substrate thickness of 1.5 µm to radiate at four frequencies of 4.975THz, 5.38THz, 6.73THz, and 7.61THz with Voltage Standing Wave Ratio (VSWR) ≤ 2. This is a very creative fractal design of a multiband THz antenna, based on a very thin graphene layer, the study proved a value in terms of high radiation efficiency and high gain, at the level of current research we made a comparison study where the design has evidently huge potential regarding applicability for telecommunication technology in the terahertz regime. The demand for high-performance terahertz (THz) antennas has increased significantly in recent years due to their potential applications in various fields such as medical imaging, security screening, and wireless communications. In this paper, the authors present an analysis of a graphene Pythagoras Tree Fractal (GPTF) antenna with a thin SiO2 substrate for THz regime. The GPTF antenna is designed using a fractal geometry approach, which provides multiple resonant frequencies and enhances the overall radiation efficiency. The thin SiO2 substrate is used to reduce the substrate losses and improve the radiation performance of the antenna. The authors use the Finite-Difference Time-Domain (FDTD) software to simulate the performance of the proposed antenna. The results show that the proposed antenna exhibits high gain, low return loss, and wide bandwidth, making it a promising candidate for THz applications.

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Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of Graphene Pythagoras Tree Fractal Antenna with Thin SiO₂ Substrate in Terahertz Regime

Hafdi

Mezache

Tao

et al. 2023

Annals of West University of Timisoara - Physics

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“…Their fractal concepts inspired the resonator engineering community to explore the potential use of these geometries in antenna research and design in Ghz regime to minimize the size of the antennas which has a high radiation efficiency, they are considered the fractal geometry in the manufacturing of the antennas [2][3][4]. In references [5][6][7][8][9][10], fractal forms were utilized to enhance antenna characteristics, whereas a combination of metamaterials and fractal shapes was employed to improve properties in references [11][12][13][14]. Using fractal forms at the nanotechnology level has proven its importance in improving the antenna characteristics in the Terahertz Regime [15].…”

Section: Introductionmentioning

confidence: 99%

Miniaturization and Fabrication of a Novel Cross-Fractal Biosensor and Sensor for Characterizing 3D Printing Electromagnetic Properties in Polylactic Acid

Zinelabiddine,

Alzahrani,

Alwabli

et al. 2024

IEEE Access

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This study presents a new approach for characterizing the 3D printing electromagnetic properties in Polylactic Acid (PLA) using a novel cross-fractal sensor. The CST Studio Suite simulation, employing the finite element method (FEM), and the ADS simulation software, based on the equivalent circuit of this novel sensor, are utilized to enhance confidence in the convergence of simulation and measurement results. The analysis confirms that the real sensor, based on a cross-sectional fractal resonator, exhibits excellent sensitivity, selectivity, and linearity. Sensor performance is evaluated through two methods: the frequency-based approach and the S11 parameter analysis. In the frequency-based method, the sensor demonstrates a typical sensitivity of 0.0302 GHz/cm³, while in the S11 parameter analysis, it exhibits a typical sensitivity of 0.3065 dB/cm³. These results underscore the high sensitivity and linearity of this innovative sensor. The using of this novel cross fractal sensor, it promises to show how to properly adjust 3D printer parameters, potentially setting the "infill percentage" of the 3D print, this is because the proportion of air present changes when the printing percentage is changed, which can lead to (εr) and loss-tangent (tan (δ)) with varying the infill percentage, by the resonance frequency (fr) approach demonstrates a characteristic sensitivity of 0.1822 GHz/RIU. The experimental study confirmed that the fabricated sensor exhibits miniaturization (with an electrical size of λ0/8), high sensitivity, and excellent linearity in the frequency approach, with a typical sensitivity of 0.004615 GHz/%. The suggested biosensor demonstrated its capability to detect low concentrations of ethanol. These aqueous solutions, containing known alcohols like ethanol in low concentrations, enables identification of Halal and alcohol-free products in food sensing applications.

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“…Prior to the truncating the edges of the radiating square patch, the performance of the structure was not satisfactory due to low radiation and limited bandwidth at the resonance frequency (see Section III) Thus, the truncated design shows an improved radiation parameter (see Section III). The performance of the truncated patch antenna was compared with a previously published THz patch antenna built on a homogeneous substrate [3][4][5] [6].…”

Section: Introductionmentioning

confidence: 99%

Design of Truncated Microstrip Square Patch Antenna for Terahertz Communication

Zubair

Jabbar

Akinsolu

et al. 2022

2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)

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This paper presents the effect of truncation on each corner of a microstrip square patch that can be utilized for Terahertz (THz) communication. The truncated microstrip patch antenna has a bandwidth of 410 GHz (-10 dB impedance bandwidth from 3.48 THz to 3.90 THz). Moreover, the proposed antenna reveals a minimum reflection coefficient of about -29 dB, maximum gain of 5.01 dBi, directivity 6.06 dBi and a total radiation efficiency of 80.2% at 3.65 THz frequency. The proposed antenna is suitable for future Terahertz communication and imaging.applications.

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Analysis of multiband graphene-based terahertz square-ring fractal antenna

Cited by 6 publications

References 12 publications

Analysis of Graphene Pythagoras Tree Fractal Antenna with Thin SiO₂ Substrate in Terahertz Regime

Analysis of Graphene Pythagoras Tree Fractal Antenna with Thin SiO₂ Substrate in Terahertz Regime

Miniaturization and Fabrication of a Novel Cross-Fractal Biosensor and Sensor for Characterizing 3D Printing Electromagnetic Properties in Polylactic Acid

Design of Truncated Microstrip Square Patch Antenna for Terahertz Communication

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Analysis of multiband graphene-based terahertz square-ring fractal antenna

Cited by 6 publications

References 12 publications

Analysis of Graphene Pythagoras Tree Fractal Antenna with Thin SiO2 Substrate in Terahertz Regime

Analysis of Graphene Pythagoras Tree Fractal Antenna with Thin SiO2 Substrate in Terahertz Regime

Miniaturization and Fabrication of a Novel Cross-Fractal Biosensor and Sensor for Characterizing 3D Printing Electromagnetic Properties in Polylactic Acid

Design of Truncated Microstrip Square Patch Antenna for Terahertz Communication

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Analysis of Graphene Pythagoras Tree Fractal Antenna with Thin SiO₂ Substrate in Terahertz Regime

Analysis of Graphene Pythagoras Tree Fractal Antenna with Thin SiO₂ Substrate in Terahertz Regime