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Abstract
In this paper, a metamaterial-loaded hybrid fractal multiband antenna, using Moore and Koch curves regarding wireless standards, is presented. The antenna has an electrical dimension of 0.344 λ × 0.257 λ × 0.0187 λ (29.5 × 22 × 1.6 mm3) at 3.5 GHz and is fabricated on FR-4 epoxy substrate. The structure resonates at multiple frequencies, i.e. 3.5, 4.41, 5.8, 8.26, 10.48, 13.35 and 14.42 GHz with appropriate impedance matching (S11 ≤ −10 dB) and achieves the peak gains 1.98, 2.38, 2.62, 3.91, 2.24, 3.28 and 4.11 dBi, respectively. The comparison of the simulated and measured results shows a good agreement. The frequency selective surface (FSS) is fabricated and tested. FSS is implemented with the antenna structure to enhance the antenna gain at achieved operating bands.
ACKNOWLEDGEMENTS
The authors thank Prof. S. K. Koul, CARE, IIT Delhi, India, for providing measurement facilities.
DISCLOSURE STATEMENT
No potential conflict of interest was reported by the author(s).
Additional information
Notes on contributors
Ritesh Kumar Saraswat
Ritesh Kumar Saraswat received the PhD in electronics engineering from Rajasthan Technical University, Kota, Rajasthan, India, in 2018. He is presently assistant professor in the Department of Electronics and Communication Engineering, MLV Textile & Engineering College, Bhilwara, Rajasthan, India. The main areas of his research are RF & microwave engineering, microwave antenna design and wireless communication, and many more. Corresponding author. Email: [email protected]
Mithilesh Kumar
Mithilesh Kumar obtained his PhD in RF communication engineering from the Indian Institute of Technology, Delhi, India, in 2011. He is presently working as a professor in the Department of Electronics Engineering, Rajasthan Technical University, Kota, Rajasthan, India. His area of research includes RF & microwave communication, active & passive microwave circuits, MIC, MMIC and MEMS components design, and active & passive microstrip antenna. He has contributed numerous (more than 150 publications) research articles in various journals and conferences. Email: [email protected]