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New Insights of Wireless Power Transfer

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Power Electronics".

Deadline for manuscript submissions: 15 August 2025 | Viewed by 745

Special Issue Editors


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Guest Editor
Research Institute for Sustainable Humanosphere, Kyoto University, Kyoto, Japan
Interests: wireless power transfer; antenna array; phased array; phase shift; wireless power; wireless power transfer system; beamforming; DC power; rectifier circuit
School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 400044, China
Interests: wireless power transfer; antenna array; space-based solar power; simultaneous wireless information and power transfer technology; microwave- and millimeter-wave circuit and system; high-efficiency rectification technology

Special Issue Information

Dear Colleagues,

Wireless power transfer (WPT) technology has penetrated the cellular phone charging market over the recent decade, and it is an emerging technology for charging electric vehicles. As the technology in these markets has matured, the focus of research works has expanded towards WPT in dynamic environments, misalignment and distance tolerance, multi-device charging, long-range wireless power transfer, and space-based solar power. To promote a greater understanding of research work in WPT, this Special Issue, titled “New Insights of Wireless Power Transfer”, will include key developments in the theory of WPT, which will be verified through simulations and/or experiments.

We invite original manuscripts presenting recent advances in this area, including the following topics:

  • Wireless power transfer systems;
  • simultaneous wireless information and power transfer;
  • Microwave power transmission;
  • Power harvesting;
  • Microwave rectifier and rectenna;
  • Millimeter-wave and terahertz antennas;
  • MIMO antenna;
  • High-gain antennas;
  • Compensators/decoupling networks;
  • Dynamic beam focusing;
  • Wireless power transfer efficiency;
  • Wireless power transfer control;
  • Misalignment and distance tolerance;
  • Space-based solar power.

Dr. Bo Yang
Dr. Daotong Li
Dr. Peng Mei
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • wireless power transfer
  • microwave power transmission
  • power harvesting
  • beamforming
  • rectifier
  • simultaneous wireless information and power transfer
  • antenna

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Published Papers (1 paper)

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Research

16 pages, 1018 KiB  
Article
Overview and Comparison of Feedback-Based Dynamic Beam Focusing Techniques for Long-Range Wireless Power Transfer
by Charleston Dale Ambatali
Electronics 2025, 14(11), 2155; https://doi.org/10.3390/electronics14112155 - 26 May 2025
Viewed by 238
Abstract
Due to the rise of gigascale antenna arrays considered to implement long-range wireless power transfer (WPT), there is a need for a scalable high-efficiency adaptive dynamic beam focusing method. Several methods have been proposed, including methods requiring position information of the receiver, use [...] Read more.
Due to the rise of gigascale antenna arrays considered to implement long-range wireless power transfer (WPT), there is a need for a scalable high-efficiency adaptive dynamic beam focusing method. Several methods have been proposed, including methods requiring position information of the receiver, use of pilot signals or channel sounding, and feedback-based approaches. The latter has the potential to achieve maximum WPT efficiency due to use of feedback between the rectenna target and the transmitter array. In this paper, we present an overview of the different feedback-based long-range WPT methods that have been proposed. We also compare their performance in terms of convergence time, complexity of implementation, and steady-state efficiency through an electromagnetic simulation, whose results are incorporated into a time-domain simulation model. The results show that methods that measure channel state information (CSI) and the both-sides retrodirective system can achieve high efficiency with less convergence time but with added implementation complexity. Full article
(This article belongs to the Special Issue New Insights of Wireless Power Transfer)
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