Terahertz Quasi-TEM Mode Tunable Composite Right/Left-Handed Leaky-Wave Antennas Using Graphene-Based Coplanar Waveguides

Gao, Muzhi; Li, Kang; Kong, Fanmin; Zhu, Gaoyang; Wang, Yunlong; Zhuang, Huawei

doi:10.1007/s11468-021-01376-y

Cited by 3 publications

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Terahertz technology between microwave and infrared radiation frequencies has recently generated substantial interest within the engineering community [1][2][3]. This attention comes from using dynamic materials such as semiconductors, graphene, and liquid crystals [4][5][6][7][8][9][10][11]. However, a fundamental challenge in the practical application of THz technology is the absence of natural materials capable of direct interaction with THz waves.…”

Section: Introductionmentioning

confidence: 99%

Enhancing broadband terahertz absorption via a graphene-based metasurface absorber featuring a rectangular ring and triple crossbars

Chou Chau

2024

Phys. Scr.

View full text Add to dashboard Cite

This study introduces an innovative strategy to achieve a versatile and adaptive terahertz (THz) absorber by leveraging a graphene-based metasurface. This metasurface comprises a rectangular ring and three crossbars, combined with a grounded gold film, all separated by a thin SiO2 layer. The phenomenon of plasmonic hybridization, involving surface and cavity plasmon resonances, enables the interaction between incident THz waves and the proposed graphene-based metasurface, leading to a substantial enhancement in the absorptance bandwidth of the plasmonic system. The enhancement of absorptance can be finely adjusted by modifying the chemical potential (Fermi energy) in graphene and manipulating the structural parameters of the device. A notable feature of our design is its inherent resistance to variations in incident angles and polarization states of incoming electromagnetic waves. The proposed device achieves an absorptance exceeding 80% across a continuous spectrum, exhibiting a bandwidth of approximately 0.90 THz spanning from 0.94 to 1.84 THz. This robust characteristic ensures consistent and reliable performance in diverse scenarios. Our findings present intriguing prospects for various applications centered on wave modulation, which encompass, but are not limited to, THz imaging, filtering, energy harvesting, and tunable sensors.

show abstract

Section: Introductionmentioning

confidence: 99%

Enhancing broadband terahertz absorption via a graphene-based metasurface absorber featuring a rectangular ring and triple crossbars

Chou Chau

2024

Phys. Scr.

View full text Add to dashboard Cite

show abstract

Terahertz Beam Steering: from Fundamentals to Applications

Monnai

Sengupta

2023

J Infrared Milli Terahz Waves

View full text Add to dashboard Cite

Free-space transmission of terahertz (THz) waves opens great opportunities for wireless applications including sensing and communication in the 6G era and beyond. Owing to their wider bandwidths and shorter wavelengths, the use of THz waves enhances information capacity and spatial resolution while downsizing aperture sizes compared to microwaves. On the other hand, the shorter wavelengths of THz waves can involve severe path loss. To compensate for the path loss, directional transmission based on beam steering is indispensable. In this article, we review the development of THz beam steering, which has been a longstanding challenge as well as the generation of high-power THz waves. While the use of active or passive phased arrays is the predominantly utilized approach to implement beam steering, other approaches based on variable diffractive structures and frequency dispersive structures offer low-cost alternatives. We also emphasize that application-driven system design approaches, in which THz beam steering is tightly coupled to signal processing, have been emerging to overcome hardware limitations.

show abstract

Investigation of Dominant-Mode Propagation in Spatially Dispersive 2-D Graphene-Based Transmission Lines at Terahertz

Gao

Zhu

Deng³

et al. 2023

IEEE Trans. Microwave Theory Techn.

View full text Add to dashboard Cite

Terahertz Quasi-TEM Mode Tunable Composite Right/Left-Handed Leaky-Wave Antennas Using Graphene-Based Coplanar Waveguides

Cited by 3 publications

References 26 publications

Enhancing broadband terahertz absorption via a graphene-based metasurface absorber featuring a rectangular ring and triple crossbars

Enhancing broadband terahertz absorption via a graphene-based metasurface absorber featuring a rectangular ring and triple crossbars

Terahertz Beam Steering: from Fundamentals to Applications

Investigation of Dominant-Mode Propagation in Spatially Dispersive 2-D Graphene-Based Transmission Lines at Terahertz

Contact Info

Product

Resources

About