Trapping EM Power by Hollow Cylinders
Koshkimbay A. Yusupov I. Orazbayev B. Slobozhanyuk A. Valagiannopoulos C.
1 February 2024Institute of Electrical and Electronics Engineers Inc.
IEEE Transactions on Microwave Theory and Techniques
2024#72Issue 21416 - 1423 pp.
Thin tubes can trap the electromagnetic (EM) energy, emitted wirelessly from a near-field source. The optimal dimensions of these hollow cylinders are determined for an extensive range of complex permittivities characterizing their material and the reported power enhancement is found practically independent of the antenna location. The spatial distribution of the signal reveals the reshaping in the paths of incoming rays and unveils the nature of the developed resonances in the vicinity of the photonic tubes, for both wave polarizations. The concept is experimentally demonstrated at the UHF band with the use of dense dielectric claddings; enhancement up to two orders of magnitude is recorded. The presented results constitute limits in terms of the EM energy accumulation for a simple configuration and, thus, can be utilized in various wireless power transfer (WPT) applications.
Design optimization , electromagnetic (EM) modeling , focusing , light trapping , microwave photonics , wireless power transmission
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Nazarbayev University (NU), Department of Physics, Astana, 10000, Kazakhstan
Mechanics and Optics (ITMO) University, School of Physics and Engineering Information Technologies, St. Petersburg, 197101, Russian Federation
National Technical University of Athens (NTUA), School of Electrical and Computer Engineering, Athens, 15780, Greece
Nazarbayev University (NU), Department of Electrical and Computer Engineering, Astana, 10000, Kazakhstan
Nazarbayev University (NU)
Mechanics and Optics (ITMO) University
National Technical University of Athens (NTUA)
Nazarbayev University (NU)
10 лет помогаем публиковать статьи Международный издатель
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