Results 11 to 20 of about 39,856 (205)

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

Extendable Array Rectenna for a Microwave Wireless Power Transfer System

IEEE Access, 2021
In this study, a rectenna is adopted in a microwave-based wireless power transfer system to rectify the received radio frequency (RF) to DC power. Each rectenna comprises a DC-DC converter at the DC output port to ensure a stable power supply and a ...
Jeong-Min Woo, Wonseob Lim, Jongseok Bae, Chan Mi Song, Kyoung-Joo Lee, Sang-Hwa Yi, Youngoo Yang   +6 more
doaj   +1 more source

Implementation of Resonant Electric Based Metamaterials for Electromagnetic Wave Manipulation at Microwave Frequencies

Sensors, 2021
In this paper, we present the application of a resonant electric based metamaterial element and its two-dimensional metasurface implementation for a variety of emerging wireless applications.
Stylianos D. Assimonis, Sandhya Chandravanshi, Okan Yurduseven, Dmitry Zelenchuk, Oleksandr Malyuskin, Muhammad Ali Babar Abbasi, Vincent Fusco, Simon L. Cotton   +7 more
doaj   +1 more source

Generation and regulation of two-dimensional autofocusing Airy beams based on holographic metasurfaces

Journal of Information and Intelligence, 2023
This paper proposes a new method to generate a two-dimensional (2D) Airy beam and Airy autofocusing beam by using the scalar holographic metasurface with amplitude-phase modulation in the microwave band.
Song Zhang, Hao Xue, Yicen Li, Jiaqi Han, Haixia Liu, Long Li, Tie Jun Cui   +6 more
doaj   +1 more source

Noise Suppression and Precise Phase Control of a Commercial S-Band Magnetron

IEEE Access, 2020
We demonstrate noise suppression and precise phase control of a commercial 2.45GHz magnetron aiming for wireless power transfer application. The impurity of the microwave spectrum was confirmed to be due to the switching frequency of 76kHz in the power ...
Seong-Tae Han, Dokyun Kim, Jongsoo Kim, Jong-Ryul Yang   +3 more
doaj   +1 more source

Wireless Power Transfer System Based on Strapping Resonators

Applied Sciences, 2018
In this study, a kind of strapped resonator is proposed to deal with high power wireless power transfer (WPT) in microwave regimes. In many specific applications, such as high power microwave wireless power transfer system (WPT), a coil resonator is not ...
Fei-Fei Guo, Shuai Ding, Bing-Zhong Wang
doaj   +1 more source

Design and implementation of a near-field focused metasurface for microwave power transmission

Results in Physics, 2023
In this paper, a near-field focused (NFF) metasurface composed of sub-wavelength structures for microwave power transmission is designed and implemented.
Han Xiong, Jin-Yun Xie, Jia-Hao Deng, Qiang Yang, Meng Suo, Huai-Qing Zhang   +5 more
doaj   +1 more source

Signal and System Design for Wireless Power Transfer : Prototype, Experiment and Validation [PDF]

, 2020
A new line of research on communications and signals design for Wireless Power Transfer (WPT) has recently emerged in the communication literature. Promising signal strategies to maximize the power transfer efficiency of WPT rely on (energy) beamforming,
Clerckx, Bruno, Kim, Junghoon, Mitcheson, Paul D.   +2 more
core   +2 more sources

A Wearable Button Antenna Sensor for Dual-Mode Wireless Information and Power Transfer

Sensors, 2021
A novel wearable button antenna sensor is proposed for the concept of simultaneous wireless information and power transfer (SWIPT). This integrates two working modes for the transfer of power and information, respectively, and optimizes transfer ...
Jiahao Zhang, Jin Meng, Wei Li, Sen Yan, Guy A. E. Vandenbosch   +4 more
doaj   +1 more source

Sidelobe Suppression Beamforming Using Tapered Amplitude Distribution for a Microwave Power Transfer System with a Planar Array Antenna [PDF]

Journal of Electromagnetic Engineering and Science, 2022
This paper proposes a sidelobe suppression beamforming scheme using tapered amplitude distribution for microwave power transfer (MPT) with a two-dimensional planar array antenna (PAA).
Inho Park, Chulhun Seo, Hyunchul Ku
doaj   +1 more source