Results 161 to 170 of about 209,492 (196)

Wireless power beam device using microwave power transfer

2014 IEEE Wireless Power Transfer Conference, 2014
The authors proposed a novel WPT system using ceramic dielectric resonators. Unloaded Q of ceramic resonator is several tens of thousands depending on the material. Thus, we can expect much longer transmission distance by using ceramic resonator. It was confirmed that the power transfer of this system was conducted by a combination both of coupling in ...
Toshio Ishizaki, Kenta Nishikawa
openaire   +1 more source

Distributed Microwave Wireless Power Transfer with Backscatter Feedback

2021 IEEE Wireless Power Transfer Conference (WPTC), 2021
In recent, microwave power transfer (MPT) for IoT devices has been studied. The distributed MPT can supply power efficiently by cooperate multiple transmit antenna arranged distributed in a relatively wide area. In this paper, we propose a method for distributed beam control by closed-loop with a backscatter signal from the receiver.
Yuki Tanaka, Kazuki Kanai, Ryosuke Hasaba, Hiroshi Sato, Yoshio Koyanagi, Takuma Ikeda, Hiroyuki Tani, Manabu Gokan, Shoichi Kajiwara, Naoki Shinohara   +9 more
openaire   +1 more source

Wireless Power Transfer Using Microwaves

2017
In this paper, a model has been presented which transfers electric power without wires by using microwaves. A breadboard model of receiving antenna called rectenna is developed for preliminary experiments including wireless power transmission. The paper presents one to one MPT system in which electric power is transferred at radio frequencies ranging ...
Nitin Sharma, Tarun Bheda, Richa Chaudhary, null Mohit, Shabana Urooj   +4 more
openaire   +1 more source

Research on Metamaterial Technology for Microwave Wireless Power Transfer

2024 International Symposium on Antennas and Propagation (ISAP)
Tamami Maruyama
exaly   +2 more sources

Experiments on driving a low-power DC motor by microwave power transfer

2015 IEEE Wireless Power Transfer Conference (WPTC), 2015
The input load characteristics of a DC motor vary with input powers. The conversion efficiency of a rectifying circuit is strongly affected by the connected load. Therefore, to efficiently drive a DC motor using microwave power transfer (MPT), it needs to improve the efficiency-load characteristics of the rectifying circuit.
Yong Huang, Tomohiko Mitani, Takaki Ishikawa, Naoki Shinohara   +3 more
openaire   +1 more source

Experimental Evaluation on RSSI-based Phase Optimization in Microwave Power Transfer

2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring), 2021
In this paper, we present an experimental evaluation of the several phase optimization algorithms for distributed cooperative microwave power transfer. The proposed evaluation uses multiple Tx antennas distributed in a space. When the Tx antennas are in the far field from each other, appropriate phase control can generate constructive interference at ...
Kentaro Hayashi 0002, Hikaru Hamase, Jiei Kawasaki, Kazuhiro Kizaki, Yuki Tanaka, Takuya Fujihashi, Shunsuke Saruwatari, Takashi Watanabe 0001   +7 more
openaire   +1 more source

Biological effects of high-power microwave power transfer for electric vehicle

2016 IEEE Wireless Power Transfer Conference (WPTC), 2016
The biggest advantage of microwave power charging for electric vehicle (EV) is the capability of charging for a running vehicle. However, the commercial application of microwave charging EV is still difficult because of some issues including technologies and safety.
Hiroshi Toromura, null Yong Huang, Shin Koyama, Junji Miyakoshi, Naoki Shinohara   +4 more
openaire   +1 more source

Microwave Power Beaming for Long Range Energy Transfer

8th European Microwave Conference, 1978, 1978
Current studies by NASA have identified space solar power as a potential long term viable candidate for efficient energy transfer at orbital ranges using a microwave beam. This paper will describe some of the power-aperture relationships leading to a potential feasible design of a power beaming system.
Ervin J. Nalos, W. W. Lund, O. Denman, S. M. Rathjen   +3 more
openaire   +1 more source

Resistive power splitter in microwave power standard calibration transfer

Measurement, 1988
The problem of accurately calibrating one power meter from another is not trivial, certainly when precise broad-band measurements are required. The main error sources — mismatches — often impair accuracy very seriously and correction methods for these errors are either time-consuming or complicated.
BRUNETTI, LUCIANO, MONTICONE, EUGENIO
openaire   +2 more sources

Design of a Circular-Patch Reflectarray for Microwave Power Transfer and Communications in Space

2019 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE), 2019
This work presents the design and simulation of holographic reflectarrays made up of circular patches for wireless power transfer (WPT) in the Fresnel region. We simulate efficient focusing at 5.8 GHz for a 1.216m square reflectarray design at a focal distance of 10m.
Emily Backer, Mohammad Alhassoun, Gregory D. Durgin   +2 more
openaire   +1 more source