Dual-band beam steering THz antenna using active frequency selective surface based on graphene

Yang, Yaojia; Wu, Bian; Zhao, Yutong; Chi-Fan,

doi:10.1051/epjam/2021004

Cited by 8 publications

(2 citation statements)

References 37 publications

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“…Metamaterials are artificial materials that can be used to improve many parameters of THz antennas [ 1 ]. Split-ring resonators or thin wires can be used to create these metamaterials [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Design and Development of Ultrabroadband, High-Gain, and High-Isolation THz MIMO Antenna with a Complementary Split-Ring Resonator Metamaterial

et al. 2023

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The need for high-speed communication has created a way to design THz antennas that operate at high frequencies, speeds, and data rates. In this manuscript, a THz MIMO antenna is designed using a metamaterial. The two-port antenna design proposed uses a complementary split-ring resonator patch. The design results are also compared with a simple patch antenna to show the improvement. The design shows a better isolation of 50 dB. A broadband width of 8.3 THz is achieved using this complementary split-ring resonator design. The percentage bandwidth is 90%, showing an ultrabroadband response. The highest gain of 10.34 dB is achieved with this design. Structural parametric optimization is applied to the complementary split-ring resonator MIMO antenna design. The designed antenna is also optimized by applying parametric optimization to different geometrical parameters. The optimized design has a 20 µm ground plane, 14 µm outer ring width, 6 µm inner ring width, and 1.6 µm substrate thickness. The proposed antenna with its broadband width, high gain, and high isolation could be applied in high-speed communication devices.

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Section: Introductionmentioning

confidence: 99%

Design and Development of Ultrabroadband, High-Gain, and High-Isolation THz MIMO Antenna with a Complementary Split-Ring Resonator Metamaterial

et al. 2023

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“…In paper [ 19 ], a monopole source antenna is surrounded by six hexagonal active frequency selective surfaces. These surfaces permit stepwise

, and

-switching of the beam in two different frequency bands of 0.96 THz and 1.21 THz.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional THz Graphene Antenna with 360∘ Continuous ϕ-Steering and θ-Control of Beam

Dmitriev

Oliveira

Paiva

et al. 2023

Sensors

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A novel graphene antenna composed of a graphene dipole and four auxiliary graphene sheets oriented at 90∘ to each other is proposed and analyzed. The sheets play the role of reflectors. A detailed group-theoretical analysis of symmetry properties of the discussed antennas has been completed. Through electric field control of the chemical potentials of the graphene elements, the antenna can provide a quasi-omnidirectional diagram, a one- or two-directional beam regime, dynamic control of the beam width and, due to the vertical orientation of the dipole with respect to the base substrate, a 360∘ beam steering in the azimuth plane. An additional graphene layer on the base permits control of the radiation pattern in the θ-direction. Radiation patterns in different working states of the antenna are considered using symmetry arguments. We discuss the antenna parameters such as input reflection coefficient, total efficiency, front-to-back ratio, and gain. An equivalent circuit of the antenna is suggested. The proposed antenna operates at frequencies between 1.75 THz and 2.03 THz. Depending on the active regime defined by the chemical potentials set on the antenna graphene elements, the maximum gain varies from 0.86 to 1.63.

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Overview of THz Antenna Design Methodologies

Anusha¹,

Geetha²,

Amsaveni³

2021

Advances in Terahertz Technology and Its Applications

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Dual-band beam steering THz antenna using active frequency selective surface based on graphene

Cited by 8 publications

References 37 publications

Design and Development of Ultrabroadband, High-Gain, and High-Isolation THz MIMO Antenna with a Complementary Split-Ring Resonator Metamaterial

Design and Development of Ultrabroadband, High-Gain, and High-Isolation THz MIMO Antenna with a Complementary Split-Ring Resonator Metamaterial

Multifunctional THz Graphene Antenna with 360∘ Continuous ϕ-Steering and θ-Control of Beam

Overview of THz Antenna Design Methodologies

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