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Abstract
A new modified Equivalent Circuit Model (M-ECM) enabled Whale Optimization (WO) assisted electromagnetic (EM) approach is presented for an efficient design of a double square loop frequency selective surface (DSL-FSS) based conformal shielding structure. A simple single-layer DSL-FSS is designed, fabricated, and measured to suppress both wireless local area network (WLAN) bands without affecting the rest of the considered spectrum using ECM enabled WO. The analytical and measured results have been found in quite good congruence with each other. The measured transmission coefficient at 2.4 and 5.0 GHz shows suppression of 35 and 38 dB, respectively. Further, the angular stability, polarization insensitivity, and physical interpretation of the DSL-FSS shielding structure are investigated. Finally, the conformal behavior of the structure has been investigated for different bending radius and good agreement between simulated and measured results shows the effectiveness of the aforementioned technique for planar and conformal WLAN shielding applications.
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No potential conflict of interest was reported by the author(s).
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Notes on contributors
Varun Chaudhary
Varun Chaudhary received the B.Tech degree from Dr. A.P.J. Abdul Kalam Technical University Uttar Pradesh, India, and M.Tech from Harcourt Butler Technological Institute, Kanpur, India. He is currently a research scholar with the Indian Institute of Information Technology, Design, and Manufacturing, Jabalpur, India. His research interests include microwave engineering, frequency selective surfaces, electromagnetic shielding, metamaterials, machine learning, and deep neural networks.
Ravi Panwar
Dr. Ravi Panwar received PhD from IIT Roorkee, and subsequently KAIST, South Korea as a Postdoctoral Fellow with Brain Korea Research Fellowship. Currently he holds the position of Assistant Professor, Grade-I in the Indian Institute of Information Technology, Design and Manufacturing, Jabalpur, Madhya Pradesh, India. He was also associated with Opto-Electro-Robotics Lab, KAIST, South Korea as a Visiting Professor. He is also acting as an IEEE Senior Member. His research interest includes soft computing in electromagnetics, microwave absorbers, metamaterials, frequency selective surfaces, surface plasmon resonance sensors, microwave measurement techniques, and electrical & electronics waste management. Dr. Panwar has strong application-oriented project engagements, having a great potential to be commercialized. He has authored more than sixty research papers published by IEEE, IET, AIP, IoP, Elsevier, Springer, Wiley, and Taylor & Francis, etc. He has served as an invited speaker and session chair for a number of IEEE conferences/ workshops in India and abroad. He is a recipient of various reputed National and International awards/fellowships.