Tunable terahertz dual-band inset-fed graphene-based circular microstrip antenna for 6G application

Raja Babu, Pradip Kumar Jain, and Manpuran Mahto
¹Department of Electronics and Communication Engineering,
National Institute of Technology, Patna-800 005, India.
³Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden

This paper is dedicated to Dr Shrinivas Joshi

This work presents the design and analysis of a tunable terahertz antenna. Initially, a single-band antenna is analysed with an inset microstrip line-feed that achieves a resonant frequency of 1.76 THz and bandwidth of 3.4%. Incorporation of a rectangular slot enables dual-band operation, resulting in resonances at 1.68 THz and 2.59 THz, with bandwidths of 2.98% and 2.69%, respectively, and gain of 6.22 dBi and 5.13 dBi, respectively. The slot introduces a new resonant mode (TM01) alongside the fundamental TM11 mode. Tunability of the resonant frequency, from 1.68 THz to 1.71 THz, is demonstrated using graphene and its chemical potential manipulation. This research opens up avenues for reconfigurable terahertz devices for various applications in spectroscopy, imaging, and communication. © Anita Publications. All rights reserved.
Doi: 10.54955/AJP.33.9-10.2024.591-597
Keywords: Terahertz, Antenna, Tunable, Single-band, Dual-band, Graphene, 6G, Wireless communication.

Peer Review Information
Method: Single- anonymous; Screened for Plagiarism? Yes
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References

1. Shamim S M, Uddin M S, Hasan M R, Samad M, Design and implementation of miniaturized wideband microstrip patch antenna for high-speed terahertz applications, J Comput Electron, 20(2021)604–610.
2. Khan M A K, Ullah M I, Kabir R, Alim M A, High-performance graphene patch antenna with superstrate cover for terahertz band application, Plasmonics, 15(2020)1719–1727.
3. Salamin M A, Ali W A E, Das S, Zugari A, A novel etched-substrate mechanism for characteristics improvement of X-band broadband printed monopole antenna, Microsyst Technol, 26(2020)3773–3782.
4. Kumar D, Sharma A, Arora A, Giri P, Varshney G, Terahertz antenna with tunable filtering characteristics, Opt Quantum Electron, 54(2022); doi.10.1007/s11082-022-04281-8
5. Nayak P B, Verma S, Kumar P, A novel compact tri-band antenna design for WiMAX, WLAN and Bluetooth applications, Twentieth National Conference on Communications (NCC), Kanpur, India, 2014, pp. 1-6,. doi. 10.1109/NCC.2014.6811379.
6. Sam P J C, Gunavathi N, A tri-band monopole antenna loaded with circular electric–inductive–capacitive metamaterial resonator for wireless application, Appl Phys A, 126(2020)774; doi.org/10.1007/s00339-020-03952-1.
7. Jiang H, Si M L, Hu W, Xin L, A symmetrical dual-beam bowtie antenna with gain enhancement using metamaterial for 5G MIMO applications, IEEE Photonics J, 11(2019)1–9.
8. Liu Z, Li X, Yin J, Hong Z, Asymmetric all silicon micro-antenna array for high angle beam bending in terahertz band, IEEE Photonics J, 11(2019)1–9.
9. Zhao M, Zhu S, Chen J, Chen X, Zhang A, Broadband metamaterial aperture antenna for coincidence imaging in terahertz band, IEEE Access, 8(2020)121311–121318.
10. Cao W, Zhang B, Jin J, Zhong W, Hong W, Microstrip antenna with electrically large property based on metamaterial inclusions, IEEE Trans Antennas Propag, 65(2017)2899–2905.
11. Ashyap A Y I, Abidin Z Z, Dahlan S H, Shah S M, Majid H A, Khee Y S, Malek N A, A wearable antenna based on fabric materials with circular polarization for body-centric wireless communications, Indones J Electrical Eng Comput Sci, 18(2020)335–342.
12. Vishwanath, Babu R, Sharma V, Sahana B C, Varshney G, Controlling the resonant modes/bandwidth using graphene strip and isolation enhancement in a two-port THz MIMO DRA, Opt Quant Electron, 55(2023)659; doi.org/10.1007/s11082-023-04970-y.