https://orcid.org/0009-0009-9968-2403
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Abstract
A compact filtering antenna with higher selectivity near band-edge frequencies for ultra-wideband (UWB) applications is presented and developed in this article. The antenna with filtering characteristics is formulated by integrating a rectangular-impedance resonator-based bandpass filter into the feedline of a modified elliptical-shaped monopole radiator. Initially, a modified elliptical-shaped monopole radiator is designed and numerically simulated to ensure the overall performance over the UWB band. The modified elliptical shape is used as a radiator to increase the electrical length while maintaining minimum physical size. The size of the UWB antenna is merely 0.518λAL × 0.272 λAL (where λAL is the guided wavelength at 2.62 GHz). Furthermore, to enhance the performance characteristics of the filtering antenna along with band-edge selectivity, geometrical parameters are optimized using a numerical simulation tool. It exhibits a simulated impedance bandwidth of 112% (3.05–10.81 GHz) with an electrical size of 0.676λFL × 0.316λFL (where λFL is the guided wavelength at 3.05 GHz). The experimental results of the fabricated UWB antenna and filtering antenna prototypes agree well with their simulated results.
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No potential conflict of interest was reported by the author(s).
Additional information
Notes on contributors
Ravi Prakash Verma
Ravi Prakash Verma received his Btech degree in electronics and communication engineering and MTech degree in microwave engineering from Uttar Pradesh Technical University, Lucknow, in the year of 2009 and 2015, respectively. He joined the Jaypee Institute of Information Technology, Noida, as a research scholar in 2020. He has more than 5 years of teaching and research experience. His research interest includes the design and analysis of passive filters and antenna for UWB applications. He has also presented and published his research articles in the Proceedings of International Conferences. Email: [email protected]
Bhagirath Sahu
Bhagirath Sahu is currently working as an assistant professor at the Energy Institute, Bengaluru (Centre of RGIPT). Before joining the Energy Institute, Bengaluru, he was associated with JIIT, Noida, India. He received his bachelor of engineering degree in electronics and communication engineering from RGPV, Bhopal, India, in 2010, and his MTech and PhD degrees in electronics engineering from IIT (BHU), Varanasi, India, in 2013 and 2018, respectively. His research interests include microstrip filters, filtering antennas, DRA, antennas for wireless applications, and metamaterials. He has published about 40 international journal and conference papers. Dr. Bhagirath was the founder of the IEEEMTT-S SBC at IIT (BHU),Varanasi, in the IEEEUttar Pradesh (UP) Section, India. He is also a member of IEEE. Corresponding author: Email: [email protected]
Ashish Gupta
Ashish Gupta is currently working as an associate professor at the Jaypee Institute of Information Technology, Noida. He has done his PhD in RF and microwave engineering from the department of Electronics Engineering, Indian Institute of Technology (Indian School of Mines) Dhanbad, in 2017. He did his MTech degree from Shri Govindram Seksaria Institute of Technology and Science, Indore, in 2010. He is the author of more than 50 articles including journals and coference papers in the relevant area. His current research interests involve metamaterials and their applications in active and passive devices. He is also serving as a reviewer in several peer-reviewed journals of repute. Email: [email protected]