A novel ultrathin wideband metamaterial absorber for X-band applications

ABSTRACT

In this paper, a wideband Metamaterial Absorber (MA) is presented for various applications of X-band spectra. MA consists of an array of a unit cell arranged in a periodic fashion having two split square resonators printed on FR4 substrate whose relative permittivity is 4.4. The simulation result reveals that $-10$ dB absorption bandwidth of 5.98 GHz (from 5.94 GHz to 11.92 GHz) and the Full Width Half Maxima (FWHM) bandwidth of 7.55 GHz (from 5.58 GHz to 13.13 GHz). It has three peaks of absorption at 6.2, 8.1 and 11.1 GHz with Absorptivity of 99.59, 99.92 and 99.85$\mathrm{\%}$, respectively. $0.095{\lambda }_0$ ${\lambda }_0$ The profile of absorber is low due to unit cell size dimensions of 9 mm×9 mm. The absorption mechanism is explained by taking effective electromagnetic parameters (${ϵ}_{\mathrm{e}\mathrm{f}\mathrm{f}}$ and ${\mu }_{\mathrm{e}\mathrm{f}\mathrm{f}}$) which are reacquired. The absorber has been investigated for a wide angle of oblique incidence and for different polarization angles as well. The proposed absorber is fabricated and its Absorptivity is tested experimentally.

KEYWORDS:

• Metamaterial absorber
• ultrathin
• wideband
• frequency selective surface

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

Prakash Ranjan  http://orcid.org/0000-0002-3325-2584

Additional information

Notes on contributors

Prakash Ranjan

Dr. Prakash Ranjan was born in Vaishali, India in 1982. He received the B.E. degree in Electronics & Communication Engineering from the Anna University, Chennai, India, in 2009, and the M.Tech degrees in Electronics & Communication Engineering from the YMCA University, Haryana, India, in 2012. In 2019, he completed his Ph.D at the National Institute of Technology, Jamshedpur, India and subsequently, joined Department of Electronics & Communication Engineering, Indian Institute of Information Technology, Bhagalpur, as Assistant Professor. He is a graduate student member of IEEE. His research interest includes metasurfaces, metamaterials & its applications, electromagnetic wave absorbers, ZOR antenna and soft computing optimization techniques.

Arvind Choubey

Prof. Arvind Choubey was born in Buxar, India in 1958. He obtained B. Tech. degree in Electrical Engineering from Bihar University, India and M. Tech degree in Electrical Engineering from Indian Institute of Technology (BHU), Varanasi, India. He received Ph.D. degree from Ranchi University, Ranchi, India. He is a Professor in the department of Electronics & Communication engineering, National Institute of Technology, Jamshedpur, India. Presently, he the Director of Indian Institute of Information Technology, Bhaalpur, India. He is a member of Executive Committee, AICTE, Govt. of India. Prof. Choubey is a project co-coordinator of System to Chip Design (C2SD) under MHRD project, Govt. of India. He is a Member, Institute of Electrical and Electronics Engineers (IEEE), USA and fellow Member of Institute of Engineers (FIE), India. He is also a life member of Indian Society for Technical Education (LISTE), India. His main areas of research interest are communication systems, metamaterial, antenna, signal processing and soft computing optimization techniques and has published more than 60 papers in these areas and got several awards for outstanding publications.

Santosh Kumar Mahto

Dr. Santosh Kumar Mahto was born in Patna, India in 1985. He received the B.Tech degree in Electronics & Communication Engineering from National Institute of Science & Technology, Berhampur, India, in 2010, and the M.E in wireless communication from BIT Mesra, Ranchi, India in 2012 and Ph.D in Microwave Engineering from National Institute of Technology, Jamshedpur, India in 2017. In 2017, he joined Department of Electronics & Communication Engineering, Indian Institute of Information Technology, Ranchi, as a faculty. Dr Mahto is Associate Member of Institute of Engineers India. His current research interest includes microwave and millimeter wave antenna, array synthesis, soft computing and electromagnetic wave absorbers.

Rashmi Sinha

Dr. Rashmi Sinha was born in Ranchi, India in 1972. She received her B.Sc (Engineering) & M.Sc (Engineering) in Electrical Engineering from National Institute of Technology, Jamshedpur, India in 1995 and 2000 respectively. She did her Ph.D from the same Institute. In 1997, she joined the Department of Electronic and Communication Engineering, NIT Jamshedpur, India, as an Assistant Professor and become Associate Professor in 2007. Her current research interest includes signal processing, communication, soft computing & antenna design. Dr Sinha is a member of IEEE. She is a life member of Institute of Engineers (India), life member of Indian Society for Technical Education (ISTE). Presently she is the Head of Department of ECE, NIT Jamshedpur.

Chetan Barde

Mr Chetan Barde was born in Jabalpur, India in 1986. He received the B.E. degree in Electronics & Communication Engineering from the RGPV University, Bhopal, India, in 2008, and the M.Tech degrees in Nanotechnology from the VIT University, Vellore, India, in 2013. He is currently pursuing Ph.D at the National Institute of Technology, Jamshedpur, India. His research interest includes ZOR Antenna, metamaterials & its applications, electromagnetic wave absorbers.