https://orcid.org/0000-0002-5641-4128
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ABSTRACT
In this article, substrate integrated waveguide (SIW) filter with compact size and wide out-of-band rejection is designed for 5G (sub-6 GHz) applications. To achieve the proposed filter responses, D-shaped resonators oriented face-to-face are etched out on the top layer of SIW. Due to the resonators loading, the filter provides a passband below the cut-off frequency of SIW. This decrease in the operating frequency of the filter allows us to achieve size miniaturization. To enhance the frequency responses, a double-stage SIW filter is proposed and investigated. The equivalent electrical-circuits are developed to validate the transmission responses. To support our claim, single- and double-stage SIW filters are designed, fabricated and tested. The filter prototypes achieve size miniaturization, low insertion loss and wide out-of-band responses. The measured responses are very similar to the full-wave simulation responses.
Acknowledgements
The authors are thankful to Mr. Purushothaman and his team from Mini Circuits, SEZ, Tambaram, Chennai for sharing measurement facilities to test the fabricated prototype.
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No potential conflict of interest was reported by the author(s).
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Notes on contributors
Tharani Duraisamy
Tharani Duraisamy received her B.E. degree in Electronics and Communication Engineering from J.J. College of Engineering and Technology Tiruchirappalli, India in 2010. She received her M.E. in Communication Systems from Saranathan College of Engineering, Tiruchirappalli, India in 2013. Currently, she is pursuing Ph.D in the Department of Electronics and Communication Engineering at Indian Institute of Information Technology, Kancheepuram, India. Her research interest includes microwave antenna, SIW passive components such as power dividers, filters and diplexers. She is a Student member of IEEE and IEEE MTT-S.
Rusan Kumar Barik
Rusan Kumar Barik received the B.Tech degree in Electronic and Communication Engineering from Biju Patnaik University of Technology, Rourkela, India in 2012, M.Tech degree in Communication Systems Design and a Ph.D. degree in Electronics Engineering from Indian Institute of Information Technology, Chennai, Tamil Nadu, India in 2015 and 2018, respectively. He joined the Department of Electronic and Communication Engineering, Christ University Bangalore, India, as an assistant professor in 2018. He is currently a Post-Doctoral Researcher with the Southern University of Science and Technology, Shenzhen, China. His research interests include multiband microwave passive devices, multiband antennas, and SIW components.
Qingsha S. Cheng
Qingsha S. Cheng received the B.Eng. and M.Eng. degrees from Chongqing University, Chongqing, China, in 1995 and 1998, respectively, and the Ph.D. degree from McMaster University, Hamilton, ON, Canada, in 2004. In 1998, he joined the Department of Computer Science and Technology, Peking University, Beijing, China. In 1999, he joined the Department of Electrical and Computer Engineering, McMaster University, where he worked as a postdoctoral fellow, a research associate, and a research engineer. He is currently an Assistant Professor with the Department of Electrical and Electric Engineering, Southern University of Science and Technology, Shenzhen, China. His research interests include surrogate modeling, CAD, modeling of microwave circuits, software design technology, and methodologies for microwave CAD.
Selvajyothi Kamakshy
Selvajyothi Kamakshy studied at Thangal Kunju Musaliar College of Engineering, Kollam, India and received the B. Tech degree (1995) in Electrical and Electronics Engineering from Kerala University, India. Received M.E degree (2004) in Power Electronics and Industrial Drives from Sathyabama Institute of Science and Technology, Chennai, India. She received a Ph.D degree in Electrical Engineering from the Indian Institute of Technology, Madras in 2009. Currently, she is an Assistant Professor in Electrical Engineering, Indian Institute of Information Technology Design and Manufacturing, Kancheepuram, India. She has 18 years of teaching experience including 11 years of research. Her areas of interest are Control and Instrumentation Engineering, Electric vehicles, Medical instrumentation, Power Electronics and control. Dr. Selvajyothi is a Life member of ISTE (Indian Society for Technical Education). She is a member of IEEE, IIIS (International Institute of Informatics and Systemics) and SAEINDIA.
Karthikeyan Sholampettai Subramanian
Karthikeyan Sholampettai Subramanian received a Ph.D. degree from IIT Guwahati, India, in 2011. He has 13 years of educational activity and research experience in the area of RF and microwave. He was the Short-Term academic foreign visit U.K and France. He is currently as Assistant Professor with the Department of Electronics and Communication Engineering, National Institute of Technology, Tiruchirappalli, India. He has authored or co-authored more than 100 scientific research papers and technical reports. His current research interests include microwave integrated circuits, biological effects of microwaves, computer-aided design of MICS, metamaterials/frequency selective surfaces (FSSs), fractal antennas, MIC antennas, metamaterial antennas, and substrate-integrated waveguides. Dr. Karthikeyan is a Chair of the IEEE-APS Society Madras chapter. He is a member of the IEEE, IEEE MTT-S, and IEEE AP-S. He is a Life Member of the ISTE.