Ultra-wideband Terahertz Absorber Based on E Shape Graphene Pattern

作者

  • Muhammad Sajjad Key Laboratory of Radar Imaging and Microwave Photonics Ministry of Education, College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing, 211106, China https://orcid.org/0000-0002-6986-2747
  • Xiangkun Kong Key Laboratory of Radar Imaging and Microwave Photonics Ministry of Education, College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing, 211106, China
  • Shaobin Liu Key Laboratory of Radar Imaging and Microwave Photonics Ministry of Education, College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing, 211106, China
  • Saeed Ur Rahman School of Electronic Engineering Xidian University, Xi’an, China
  • Zakir Khan Department Micro-/Nano-Electronic System Integration Center University of Science and Technology of China, Hefei 230027, China
  • Owais Department of Electrical and Computer Engineering COMSATS University Islamabad, Abbottabad, 22060, Pakistan

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https://doi.org/10.13052/2023.ACES.J.380207

关键词:

absorber, broadband, graphene, tunable

摘要

We present a tunable ultra-wideband (UWB) absorber based on a multilayer of “E” shaped graphene patterns. The numerically calculated results indicate that the absorption of the proposed design is above 95% in the range of 1.12 to 14.04 THz. By using the multiple layers of graphene, the relative bandwidth is 95% and reaches up to 170% of the central frequency. Furthermore, for transverse electric polarization mode at a resonating frequency of 1.68, 3.99, 7.51, 13.56, and 17.74 THz the absolute value exceeds 99.57, 99.37, 99.94, 99.86, and 99.09%, respectively. Also, owing to the structure’s rotational symmetry, the absorber is insensitive to both transverse magnetic (TM) and transverse electric (TE) polarization. The absorption peaks and frequency band can be controlled effectively by altering the Fermi level of graphene without modifying the structure manually. Moreover, the absorber exhibits steady absorption over an incident angle of 0o to 60o, with just a minor decrease in bandwidth around 60o.

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Muhammad Sajjad was born in 1990. He received the B.Sc. degree in Telecommunication from the University of Science and Technology, Bannu, Pakistan, in 2013, and the MSc. degree in Electrical Engineering from COMSAT University, Pakistan, in 2017. He is currently pursuing the Ph.D. degree with the Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing, China. His research interests include electromagnetics and antennas especially metasurfaces, FSS, and polarization conversation.

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Xiangkun Kong (Member, IEEE) received a Ph.D. degree in Communication and Information Systems from the Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing, China, in 2015. He has been an Associate Professor with NUAA since his promotion in July 2015. He used to work at the University of St. Andrews, U.K., as an Academic Visitor supported by the China Scholarship Council. His main research interests include the electromagnetic properties of frequency selective surface, metamaterial and metasurface application, plasma photonic crystal, and computational electromagnetics. He has published more than 100 articles in different academic journals, including Applied Physics Letters, Optics Express, and IEEE Transactions on Antennas and Propagation, and has been cited 1600 times.

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Shaobin Liu (Member, IEEE) received a Ph.D. in Electronics Science and Technology from the National University of Defense Technology, Changsha, China, in 2004. He is currently a Professor of Electromagnetic and Microwave Technology with the Nanjing University of Aeronautics and Astronautics, Nanjing, China. His current research interests include plasma stealthy antennas, microwave, radio frequency, and electromagnet incompatibility.

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Saeed Ur Rahman is with school of Electronic Engineering, Xidian University, Xi’an, China. He has worked as a postdoctoral research fellow at Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing China and also received his Ph.D. degree in information and communication engineering from NUAA. Currently he is an Associate Professor at Xidian University, Xi’an China.

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Zakir Khan received his B.Sc. Engineering degree in Telecommunication Engineering from the University of Engineering and Technology, Peshawar, Pakistan, in 2013, the M.Sc. degrees in Electrical Engineering from COMSATS Institute of Information and Technology, Abbottabad, Pakistan in 2016 and the Ph.D. degree with Department of Electronics science and Technology, University of Science and Technology of China in 2022. His research interests include microwave and millimeter wave antenna design, microstrip patch antennas, miniaturized antennas, wide band antennas and multiband antennas.

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Owais received the B.Eng. and M.Sc. degrees from the University of Engineering and Technology, Peshawar, Pakistan, in 1996 and 2000, respectively, and the Ph.D. degree in Communication Electronics from the Department of Science and Technology, Linköping University, Sweden. He is currently serving as an Associate Professor with the COMSATS University Islamabad, Abbottabad Campus, Pakistan. He has authored 40 international journal articles. His main research interests include the design of microstrip patch and dielectric resonator antennas, MIMO and reconfigurable DRAs, electromagnetic bandgap, and double-negative metamaterials; moreover, six-port front-end circuits for direct conversion transceiver design and high-speed data transmissions are also his area of interest.

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已出版

2023-02-28

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[1]
M. . Sajjad, X. . Kong, S. . Liu, S. U. . Rahman, Z. . Khan, 和 Owais, 《Ultra-wideband Terahertz Absorber Based on E Shape Graphene Pattern》, ACES Journal, 卷 38, 期 2, 页 129–136, 2月 2023.

期

2023: Vol 38 Iss 2

栏目

General Submission