Recent Trends and Challenges in Near-Field Wireless Power Transfer Systems

• Published in: IEEE open journal of solid-state circuits Vol. 3; pp. 197 - 213
• Main Authors: Moisello, Elisabetta, Liotta, Alessandro, Malcovati, Piero, Bonizzoni, Edoardo
• Format: Journal Article
• Language: English
• Published: New York IEEE 2023; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antennas; Capacitors; Circuits; Coil; Coils; Couplings; Data transfer; Electric vehicles; inductive; Industrial applications; Magnetic circuits; Magnetic resonance; Medical devices; Near field communication; Near fields; near-field; rectifier; Rectifiers; regulation; resonant; Trends; wireless charging; Wireless communication; wireless data transfer; Wireless power transfer; wireless power transfer (WPT); Wireless power transmission
• ISSN: 2644-1349; 2644-1349
• DOI: 10.1109/OJSSCS.2023.3313575

In recent years, wireless power transfer (WPT) has become a widespread method for charging and powering devices, including but not limited to consumer electronics, industrial applications, electric vehicles, medical devices, and sensor nodes. This article provides an overview of the available WPT technologies, focusing on the near-field case, and highlights the main architecture and circuit-level challenges encountered in the implementation of magnetic-based near-field WPT systems while reviewing the proposed solutions in the literature, in order to identify the main research interests as well as the trends for the future.