https://orcid.org/0000-0002-3960-1423
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Abstract
A smart city necessitates spectrum and energy efficiency with increasing applications which demand an increasing number of nodes in the Internet of Things (IoT) system networks. In recent years, radio frequency (RF) energy harvesting is best suited to enhance the energy efficiency required for self-sustained IoT networks incorporated in smart cities. This work proposes a rectangular dielectric resonator antenna (RDRA), that comprises a rectangular dielectric resonator (DR) and slots loaded ground plane. The proposed antenna operates efficiently at 3.5 and 5.8 GHz frequencies and also achieves circularly polarized characteristics at two operating bands. A microstrip feeding approach opts for excitation of the proposed antenna. The radiational properties of the proposed antenna show that the antenna is suitable to operate for radio frequency energy harvesting in smart city applications efficiently. An HSMS2860 Schottky diode has been chosen for the rectification at two bands of frequencies. A proper impedance matching is achieved using microstrip transmission lines and rectangular stubs connected to the rectifier circuit. The proposed rectifier circuit offers the maximum power conversion efficiency (PCE) of 54.53% and 41.26% at 3.5 and 5.8 GHz frequencies respectively for 5 dBm input power. The output voltages obtained at two frequencies are 1.31 V and 1.16 V, respectively.
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Daasari Surender
Daasari Surender received the Bachelor of Technology degree in electronics and communication engineering from Sree Chaitanya College of Engineering, affiliated to Jawaharlal Nehru Technological University Hyderabad (JNTUH), Telangana in 2008, and Master of Engineering degree in microwave and radar engineering from University College of Engineering (Autonomous), Osmania University, Telangana in 2011. He worked as an assistant professor in Kamala Institute of Technology and Science, affiliated to JNTU Hyderabad during 2012–2017. Currently, he is working as a PhD research scholar in the National Institute of Technology Silchar, India since 2017. His current research interests include planar antennas, dielectric resonator antennas, and RF energy harvesting systems. Email: [email protected]
Md. Ahsan Halimi
Md Ahsan Halimi received BTech and MTech degrees in the stream of electronics and communication engineering from Ajmer Institute of Technology, Ajmer, India, and Pondicherry University, Pondicherry, India respectively. Currently, he is working as a PhD Scholar at National Institute of Technology Silchar, India. His current research interests include RF energy harvesting, microwave rectifiers, reconfigurable antennas. Email: [email protected]
Taimoor Khan
Taimoor Khan was awarded PhD degree in electronics and communication engineering from National Institute of Technology Patna, India. Presently, he is an assistant professor in the Department of Electronics and Communication Engineering at the National Institute of Technology Silchar, Assam, since 2014. Before joining this institute, he served different organizations for around 15 years in different capacities like lab instructor, lecturer, assistant professor and associate professor, respectively. In addition to this regular experience, Dr Khan has also worked as visiting researcher at Queen's University Canada as well as a visiting assistant professor at Asian Institute of Technology, Bangkok, Thailand. His active research interest includes printed microwave circuits, electromagnetic bandgap structures, ultrawide band antennas, dielectric resonator antennas, ambient wireless energy harvesting, and artificial intelligence paradigms in electromagnetics. Dr Khan has successfully guided three PhD. Theses and presently supervising six PhD students. Published over seventy-five research articles. Dr Khan has completed one major project funded by SERB, and two minor projects funded by MHRD and AICTE, respectively. Currently, he is executing two international collaborative SPARC and VAJRA research projects with Queen's University Canada and California State University, Northridge, USA. He is a Fellow of IEI (India), Fellow of IETE (India), Senior Member of IEEE (USA), Senior Member of URSI (Belgium) and also a member of the Editorial Board of Wiley's International Journal of RF and Microwave Computer-Aided Engineering. Dr Khan has been awarded IETE-Prof SVC Aiya Memorial Award for the year 2020. Dr Khan et al. edited a research book titled “Elements of Radio Frequency Energy Harvesting and Wireless Power Transfer Systems” published by CRC, Taylor and Francis, USA and another research book titled “Band-Notch Characterisitcs in Ultra-Wideband Antennas” is in press with CRC, Taylor and Francis, USA.
Fazal A. Talukdar
Fazal A Talukdar obtained Bachelor of Engineering (Hons) from Regional Engineering College, Silchar (now, NIT Silchar) in 1987, MTech in 1993 and PhD in 2002–03 from Indian Institute of Technology Delhi and Jadavpur University, respectively. He joined Regional Engineering College, Silchar as lecturer in April 1991, became an assistant professor in 1996, professor in May 2006. Earlier he was a lecturer at Silchar Polytechnic from August 1988 to March 1991. He was head of the Department of Electronics and Communication Engineering from August 2006 to April 2006. From July 2004 to June 2009, he was the registrar of NIT Silchar. From March 2005 to August 2007, he held the post of deputy registrar (Accounts), during 2012–13, he was the dean (Alumni Relations) and during 2013–15, he was the dean (Academic Affairs) of the Institution. Email: [email protected]
Yahia M.M. Antar
Yahia M M Antar received the BSc (Hons) degree in electrical engineering from Alexandria University, Egypt in 1966, MSc and PhD degrees in electrical engineering from the University of Manitoba, Canada in 1971 and 1975, respectively. In 1979, he joined the Division of Electrical Engineering, National Research Council of Canada. In 1987, he joined the Department of Electrical and Computer Engineering, Royal Military College of Canada, Canada, where he has been a professor since 1990. Published over 200 papers, several books, over 450 conference papers, holds several patents, has chaired several national and international conferences. He has supervised and co-supervised more than 90 PhD and MSc thesis. He was appointed as a member of the Canadian Defence Advisory Board of the Canadian Department of National Defence in 2011. He is a fellow of the Engineering Institute of Canada, the Electromagnetic Academy, and the International Union of Radio Science. He served as the Chair for Commission B from 1993 to 1999 and for CNC, URSI from 1999 to 2008, and has a cross-appointment at Queen's University, Kingston. In 2002, he was awarded a Tier 1 Canada Research Chair in electromagnetic engineering, which was renewed in 2016. He serves as an associate editor for many IEEE and IET journals and as an IEEE-APS distinguished lecturer. He was elected by the URSI to the board as the vice president in 2008 and 2014 and by the IEEE AP AdCom in 2009. Presently, he is serving as president IEEE APS (Region 7-10) for the year 2021. Email: [email protected]