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Abstract
A composite antenna with wide impedance bandwidth and enhanced isolation for multiple-input-multiple-output (MIMO) applications is introduced in this article. A simple conformal-strip fed rectangular dielectric resonator (rDR) with a conducting conformal-patch, which provides wide impedance bandwidth (3.21-6.19 GHz), is utilized as an antenna element. The proposed MIMO antenna is formed by arranging two symmetrical composite antenna elements side by side along with a simple decoupling structure (based on a wide rectangular slot and two metallic strips) in between them. The proposed MIMO antenna delivers good inter-port isolation (greater than 18 dB) over the entire operating bandwidth. Also, a well satisfactory outcome of the envelope correlation coefficient (ECC) is obtained over this bandwidth. Moreover, the proposed antenna exhibits a stable broadside directional radiation pattern over the entire operating bandwidth.
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Notes on contributors
Nikesh Kumar Sahu
Nikesh Kumar Sahu was born in Keonjhar, India, in 1991. He received the B.Tech degree in Electronics and Telecommunication Engineering from Biju Patnaik University of Technology, Odisha, India, and the M.Tech degree in Electronics Engineering from IIT (ISM) Dhanbad, India, where he is currently pursuing his Ph.D. degree. He joined the Department of Electronics Engineering, IIT (ISM) Dhanbad, in 2016, as a Junior Research Fellow, where he has been a Senior Research Fellow, since 2018. He has authored or co-authored over 19 research articles in international/national journal/conference proceedings. His current research interests involve circular polarization, dielectric resonator antennas, and MIMO antennas.
Gourab Das
Gourab Das was born in Kharagpur, India, in 1990. He received the B.Tech degree in Electronics and Communication Engineering from West Bengal University of Technology, Kolkata, India, and the M.Tech degree in Electronics Engineering from IIT (ISM) Dhanbad, India. He has completed his Ph.D. degree from IIT (ISM) Dhanbad, India. He has authored or co-authored over 40 research articles in international/national journal/conference proceedings. His current research interests involve antenna arrays, dielectric resonator antennas, and MIMO antennas.
Ravi Kumar Gangwar
Ravi Kumar Gangwar received the B.Tech degree in Electronics and Communication Engineering from U. P. Technical University, in 2006, and the Ph.D. degree in Electronics Engineering from IIT (Banaras Hindu University) (IITBHU), Varanasi, India, in 2011. He is currently an Associate Professor in the Department of Electronics Engineering, IIT (ISM) Dhanbad, India. He has authored or coauthored over 160 research papers in international journals/conferences proceedings. His research interests include dielectric resonator antennas, microstrip antennas, and bio-electromagnetics. He has guided/guiding ten Ph.D. and ten M.Tech students. He has completed/ongoing four research and development projects related to dielectric resonator antenna and their applications from various funding agencies like DRDO, SERB-DST, and ISRO. He is a member of the Antenna and Propagation Society and Communication Society, and a member of the Institution of Engineers (MIE), India, and the Institution of Electronics and Telecommunication Engineers (MIETE), India. He is a reviewer for IEEE Antenna and Propagation Letters, IEEE Antennas and Propagation Magazine, IET Microwave and Antenna Propagation, IET Electronics Letters, Progress in Electromagnetic Research, the International Journal of RF Microwave and Computer Aided Engineering, and the International Journal of Microwave and Wireless Technology.