Design of a novel reconfigurable Sierpinski fractal graphene antenna operating at THz band

Xu, Yingying; Xu, Yang; Hu, Jun; Wang, Yin

doi:10.1109/aps.2013.6710947

Cited by 3 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fractal geometry [7], whose perimeter becomes larger and larger, while the area becomes smaller and smaller with fractal level increasing, can be applicable to the design of an antenna structure [8]. Compared to traditional microstrip antennae, because of its unique self-similarity geometry, the fractal antenna has two obvious advantages.…”

Section: Introductionmentioning

confidence: 99%

Thermal Transport of Graphene Sheets with Fractal Defects

et al. 2018

View full text Add to dashboard Cite

Graphene combined with fractal structures would probably be a promising candidate design of an antenna for a wireless communication system. However, the thermal transport properties of fractal graphene, which would influence the properties of wireless communication systems, are unclear. In this paper, the thermal transport properties of graphene with a Sierpinski fractal structure were investigated via the reverse non-equilibrium molecular dynamics simulation method. Simulation results indicated that the thermal conductivity of graphene with fractal defects decreased from 157.62 to 19.60 (W m−1 K−1) as the fractal level increased. Furthermore, visual display and statistical results of fractal graphene atomic heat flux revealed that with fractal levels increasing, the real heat flux paths twisted, and the angle distributions of atomic heat flux vectors enlarged from about (−30°, 30°) to about (−45°, 45°). In fact, the fractal structures decreased the real heat flow areas and extended the real heat flux paths, and enhanced the phonon scattering in the defect edges of the fractal graphene. Analyses of fractal graphene thermal transport characters in our work indicated that the heat transfer properties of fractal graphene dropped greatly as fractal levels increased, which would provide effective guidance to the design of antennae based on fractal graphene.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermal Transport of Graphene Sheets with Fractal Defects

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Guo et al [ 75 ] used ultraviolet lithography to prepare a square metal spiral antenna. This structure of antenna can increase the absorption area, approximately stabilize radiation impedance in the THz band, and be widely used in broadband detection [ 76 ]. For THz wave coupling and metallic electrodes, the antenna can be employed.…”

Section: Classification Of Graphene Terahertz Detectorsmentioning

confidence: 99%

Recent Progress in the Development of Graphene Detector for Terahertz Detection

Liu

Jiang

et al. 2021

Sensors

View full text Add to dashboard Cite

Terahertz waves are expected to be used in next-generation communications, detection, and other fields due to their unique characteristics. As a basic part of the terahertz application system, the terahertz detector plays a key role in terahertz technology. Due to the two-dimensional structure, graphene has unique characteristics features, such as exceptionally high electron mobility, zero band-gap, and frequency-independent spectral absorption, particularly in the terahertz region, making it a suitable material for terahertz detectors. In this review, the recent progress of graphene terahertz detectors related to photovoltaic effect (PV), photothermoelectric effect (PTE), bolometric effect, and plasma wave resonance are introduced and discussed.

show abstract

Recent Advances in The Design and Analysis of Fractal Antennas

Dhaliwal¹,

Pattnaik²,

Pattnaik³

2023

Fractal Antenna Design Using Bio-Inspired Computing Algorithms

View full text Add to dashboard Cite

Microstrip patch antennas mainly draw attention to low-power transmitting and receiving applications. These antennas consist of a metal patch (rectangular, square, or some other shape) on a thin layer of dielectric/ferrite (called a substrate) on a ground plane. Microstrip antennas have matured considerably during the past three decades, and many of their limitations have been overcome. As the size of communication devices is decreasing day by day, the demand for miniaturized patch antennas is growing. Many methods of reducing the size of antennas have been developed in the past two decades. The recent trend in this direction is to use fractal geometry. The design of an antenna for a specific resonant frequency requires the calculation of the optimal value of various dimensions. This is a hard task for fractal antennas because the accurate mathematical formulas leading to exact solutions do not exist for the analysis and design of these antennas. The use of bio-inspired computing techniques is gaining momentum in antenna design and analysis due to rapid growth in the computational processing power, and the main techniques are Artificial Neural Network (ANN), Genetic Algorithm (GA), Particle Swarm Optimization (PSO), Bacterial Foraging Optimization (BFO), and Swine Influenza Model-based Optimization (SIMBO), etc. In the area of antenna design, the ANNs are employed to model the relationship between the physical and electromagnetic parameters. The trained ANNs are effectively used for the analysis and design of various types of antennas. Bio-inspired optimization techniques have been used by researchers to calculate the optimal parameters of various patch antennas and for the size optimization of antennas. Also, the hybrids of ANN and optimization techniques are proposed as effective algorithms for many applications, especially when the expressions for relating the input and output variables are not available. The presented research has addressed these recent topics by designing miniaturized fractal antennas using bio-inspired computing techniques for various low-power applications, thus, providing cost.effective and efficient solutions.

show abstract

Design of a novel reconfigurable Sierpinski fractal graphene antenna operating at THz band

Cited by 3 publications

References 5 publications

Thermal Transport of Graphene Sheets with Fractal Defects

Thermal Transport of Graphene Sheets with Fractal Defects

Recent Progress in the Development of Graphene Detector for Terahertz Detection

Recent Advances in The Design and Analysis of Fractal Antennas

Contact Info

Product

Resources

About