https://orcid.org/0000-0001-6414-2954
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ABSTRACT
In this paper, initially a photonic crystal is proposed with a periodic air gap and its performance is investigated at terahertz frequencies by varying the radius of the air gap. Then a microstrip array antenna on the 2-D photonic crystal using graphene sheet as patch material is designed and its electromagnetic characteristics are analysed and compared with those of the existing non-air gap antenna. The suggested antenna also operates in the multi-frequency terahertz range. Using a photonic band gap (PBG), crystal substrate causes the return loss to rise from −29 to −44 dB. Additionally, the antenna array's bandwidth was increased from 40 to 110 GHz. By using PBG, the gain of the suggested antenna is increased by up to 13 dB, as opposed to 4.81 dB for a substrate that does not use PBG.
Acknowledgement
This work is carried out from Research Grant under Grant number: CRG/2022/002356 [Indian Institute Of Technology (ISM), Dhanbad R&D Project No. DST(SERB)(359)/2022-2023/962/ECE] dated 22 December 2022 provided by Science and Engineering Research Board, Department of Science and Technology (SERB-DST), Government of India, with the project entitled “Generation of high chirp rate dual chirp microwave waveform in Ku band using novel microwave photonic techniques for high-performance radar application”.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Data availability
No data were generated or analysed in the presented research.
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Notes on contributors
Chandan Kumar
Chandan Kumar is currently pursuing PhD from Indian Institute of Technology (Indian School of Mines) Dhanbad in Electronics Engg. Dept. under the guidance of Dr. S.K. Raghuwanshi. He has completed his B.Tech in Electronics & Communication Engineering from Siliguri Institute of Technology, W.B in 2010 and Master of Engineering in Microwave Engineering from Birla Institute of Technology-Mesra, Ranchi in 2013(First Class with Distinction). His primary research interests are in Antenna, Photonics & Microwave. He has 7 years of teaching experience and more than 10 Journals and conference papers. He is also working as SRF in DST(SERB) sponsored project of titled “Generation of high chirp rate microwave waveform in Ku band using novel microwave photonic techniques for high performance radar application”.
Sanjeev Kumar Raghuwanshi
Sanjeev Kumar Raghuwanshi (Senior Member, IEEE) received the bachelor's degree in electronic and instrumentation engineering from the Shri Govindram Seksaria Institute of Technology and Science, Indore, Madhya Pradesh, India, in August 1999, the master's degree in solidstate technology from IIT Kharagpur, Kharagpur, India, in January 2002, and the PhD degree in optics from the Department of Electrical Communication Engineering, Indian Institute of Science (IISc), Bengaluru, India, in 2008. He worked as a Post-doctoral Research Fellow with the Instrumentation and Sensor Division, School of Engineering and Mathematical Sciences, University of London, London, UK, from 2014 to 2015. He was an Associate Professor with the Electronics Engineering Department, Indian Institute of Technology (Indian School of Mines) (IIT-ISM) Dhanbad, Dhanbad, India. He serves on the editorial boards of various Indian publications and serves as a reviewer for them. He was a Visiting Scientist (under the Indian National Science Academy (INSA) Visiting Scientist Fellowship Scheme 2020) with the Department of Electrical Communication Engineering, Indian Institute of Science (IISc), Bengaluru, from December 2021 to January 2022. He has published over 100 peer-reviewed and indexed international science citation index (SCI) journal articles. Dr. Raghuwanshi has served as a Reviewer for journals, such as IEEE Journal of Quantum Electronics, IEEE Transactions on Instrumentation and Measurement, IEEE Photonics Technology Letter, and IEEE Sensor Journal.
Vikram Kumar
Dr. Vikram Kumar an Assistant Professor in the Department of Electronic Science at Delhi University South Campus, brings a significance of academic with research experience to the field. After completing his Masters at Birla Institute of Technology Mesra in 2011, he honed his expertise in high-power microwaves during his time at NIT Patna. In 2019, Dr. Kumar further solidified his knowledge base with a Ph.D. from the prestigious IIT BHU Varanasi in research of high power microwave sectoral waveguide mode converter. He is focusing on cutting-edge areas like metasurfaces, photonic crystal antennas, and high-power microwave applications.