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A Circularly Polarized Implantable Rectenna for Microwave Wireless Power Transfer [PDF]

Micromachines, 2022
A circularly polarized implantable antenna integrated with a voltage-doubled rectifier (abbr., rectenna) is investigated for microwave wireless power transfer in the industrial, scientific, and medical (ISM) band of 2.4–2.48 GHz.
Chao Xu, Yi Fan, Xiongying Liu
doaj   +5 more sources

History and Innovation of Wireless Power Transfer via Microwaves [PDF]

IEEE Journal of Microwaves, 2021
Wireless power transfer (WPT) has a long history of over 100 years since the first experiment conducted by Nicola Tesla. However, the most interesting innovation of WPT was born in the 21st century.
Naoki Shinohara
doaj   +2 more sources

Obstacle‐Immune Microwave Wireless Power Transfer System Based on Amplitude‐Dependent Caustic Metasurface [PDF]

Advanced Science
Rapid advances in the Internet of Everything (IoE) drive microwave wireless power transfer (MWPT) technology for charging wireless smart devices. However, environmental obstacles and safety concerns associated with high‐power transmission present new ...
Song Zhang, Hao Xue, Zhe Zheng, Xiangjin Ma, Xin Wang, Jiaqi Han, Haixia Liu, Long Li   +7 more
doaj   +2 more sources

Ultra-Wideband Quad-Parallel Shunt-Diode Rectifier for Sub-6 GHz Wireless Power Transfer [PDF]

Micromachines
Wireless power transfer via RF/microwave rectifiers has emerged as a sustainable solution to the energy requirements of low-power devices. In this study, a novel four-parallel-shunt-diode ultra-wideband rectifier is proposed to enable wireless power ...
Sadık Zuhur
doaj   +2 more sources

Flexible Receiver Antenna Prepared Based on Conformal Printing and Its Wearable System [PDF]

Sensors
Microwave energy is ideal for wearable devices due to its stable wireless power transfer capabilities. However, rigid receiving antennas in conventional RF energy harvesters compromise wearability.
Qian Zhu, Wenjie Zhang, Wencheng Zhu, Chao Wu, Jianping Shi   +4 more
doaj   +2 more sources

Implementation of Digital Beamforming System for Microwave Power Transfer With Real-Time Beam Scanning

IEEE Access, 2023
In this study, we propose a digital beamforming system for microwave power transfer with a real-time beam-scanning algorithm for tracking a moving receiver. To perform scanning, each channel in the transmitter generates and converts a baseband signal for
Minjae Ahn, Inho Park, Illsoo Sohn, Oh-Soon Shin, Hyunchul Ku   +4 more
doaj   +1 more source

Scavenging Microwave Wireless Power: A Unified Model, Rectenna Design Automation, and Cutting-Edge Techniques

Engineering, 2023
While sufficient review articles exist on inductive short-range wireless power transfer (WPT), long-haul microwave WPT (MWPT) for solar power satellites, and ambient microwave wireless energy harvesting (MWEH) in urban areas, few studies focus on the ...
Si-Ping Gao, Jun-Hui Ou, Xiuyin Zhang, Yongxin Guo   +3 more
doaj   +1 more source

Microwave Devices for Wearable Sensors and IoT

Sensors, 2023
The Internet of Things (IoT) paradigm is currently highly demanded in multiple scenarios and in particular plays an important role in solving medical-related challenges.
Alessandra Costanzo, Elisa Augello, Giulia Battistini, Francesca Benassi, Diego Masotti, Giacomo Paolini   +5 more
doaj   +1 more source

A Study on Automatically Target-Chasing Microwave Power Transfer Systems in Multipath Environments

Energies, 2022
In this paper, we propose novel retrodirective systems to improve the efficiency and safety of microwave power transmission (MPT) systems in multipath environments.
Naoki Shinohara, Taichi Sasaki
doaj   +1 more source

Large microwave generation from d.c. driven magnetic vortex oscillators in magnetic tunnel junctions [PDF]

, 1999
Spin polarized current can excite the magnetization of a ferromagnet through the transfer of spin angular momentum to the local spin system. This pure spin-related transport phenomena leads to alluring possibilities for the achievement of a nanometer ...
Dussaux, A., Georges, B., Grollier, J., Cros, V., Khvalkovskiy, A. V., Fukushima, A., Konoto, M., Kubota, H., Yakushiji, K., Yuasa, S., Zvezdin, K. A., Ando, K., Fert, A.   +12 more
core   +5 more sources