Abstract

In this paper, a graphene-based (MIMO) antenna is designed and examined. Two unique properties of the proposed terahertz (THz) MIMO antenna are (1) circular polarization is achieved through an asymmetrical cross slot, etched over the graphene patch; and (2) a bidirectional radiation pattern is achieved through oppositely oriented identical antenna ports. Mutual coupling between the antenna ports is less than ${-}{35}\;{\rm dB}$. Due to the inclusion of the pattern diversity concept, a low value of envelope correlation coefficient is achieved. The proposed THz radiator operates over the frequency range of 4.67–4.87 THz, along with a 3 dB axial ratio between 4.76 and 4.81 THz. This type of antenna is widely employable for biomedical applications.

© 2022 Optica Publishing Group

Performance prediction of a circularly polarized graphene-dielectric resonator-based antenna for THz frequency application using machine learning algorithms

Kundan Kumar and Pradip Kumar Sadhu
Appl. Opt. 63(6) A1-A6 (2024)

Terahertz antenna with tunable filtering

Mohd Farman Ali, Zaid Jawed, Vinamra Raj, and Gaurav Varshney
Appl. Opt. 62(2) 284-290 (2023)

Large angle beam steering THz antenna using active frequency selective surface based on hybrid graphene-gold structure

Bian Wu, Yue Hu, Yu Tong Zhao, Wei Bing Lu, and Wei Zhang
Opt. Express 26(12) 15353-15361 (2018)

Beam steered graphene-based Yagi–Uda array antenna with a transverse magnetic to hybrid mode conversion approach

Rajesh Yadav, V. S. Pandey, Sandeep Kumar, and Shailza Gotra
J. Opt. Soc. Am. A 39(10) 1749-1759 (2022)

Dual-mode microstrip leaky-wave antenna for pattern diversity application

Xiaoyu Du, Jian Ren, Huidong Li, and Yingzeng Yin
Appl. Opt. 61(26) 7719-7725 (2022)