Technologies of antenna and phased array for wireless power transfer via radio waves

2018 ◽  
pp. 129-154
Author(s):  
A. Massa ◽  
G. Oliveri ◽  
P. Rocca ◽  
N. Anselmi ◽  
M. Salucci
Keyword(s):  
Phased Array ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Radio Waves ◽  
Wireless Power

scholarly journals Wireless Power Transfer to a Microaerial Vehicle with a Microwave Active Phased Array

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Shotaro Nako ◽  
Kenta Okuda ◽  
Kengo Miyashiro ◽  
Kimiya Komurasaki ◽  
Hiroyuki Koizumi
Keyword(s):  
Phased Array ◽  
Wireless Power Transfer ◽  
Axial Ratio ◽  
Input Power ◽  
Power Transfer ◽  
Wireless Power ◽  
Phased Array Antenna ◽  
Power Fluctuation ◽  
Microwave Beam ◽  
Yaw Angle

A wireless power transfer system using a microwave active phased array was developed. In the system, power is transferred to a circling microaerial vehicle (MAV) by a microwave beam of 5.8 GHz, which is formed and directed to the MAV using an active phased array antenna. The MAV is expected to support observation of areas that humans cannot reach. The power beam is formed by the phased array with eight antenna elements. Input power is about 5.6 W. The peak power density at 1,500 mm altitude was 2.63 mW/cm2. The power is sent to a circling MAV. Therefore, the transfer beam should be polarized circularly to achieve a constant power supply independent of its yaw angle. To minimize the polarization loss, a sequentially routed antenna (SRA) was applied to the transmitter antenna. Results show that the axial ratio of 0.440 dB was accomplished and that power fluctuation was kept below 1%.

Phased Array Focusing for Acoustic Wireless Power Transfer

2018 ◽  
Vol 65 (1) ◽  
pp. 39-49 ◽  
Author(s):  
Victor Farm-Guoo Tseng ◽  
Sarah S. Bedair ◽  
Nathan Lazarus
Keyword(s):  
Phased Array ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power

Retrodirective Transceiver Utilizing Phased Array and Direction Finder

2020 ◽  
Vol 35 (9) ◽  
pp. 1073-1079
Author(s):  
Mohammed Aseeri ◽  
Waleed Alomar ◽  
Hamad Alotaibi ◽  
Abdulrahman Aljurbua
Keyword(s):  
Phased Array ◽  
Maximum Amplitude ◽  
Wireless Power Transfer ◽  
Frequency Component ◽  
Array Antenna ◽  
Power Transfer ◽  
Wireless Power ◽  
Phased Array Antenna ◽  
Frequency Scanning ◽  
To Receive

Retrodirectivity have several important applications in communication and in wireless power transfer. In this paper, frequency sensitive retrodirective transceiver is proposed. It receives a signal and infers its direction from its frequency spectrum, then it can transmit a new signal back to the same or other direction at the designer wish. To determine the direction of the coming signal, a 0.85-1.15GHz frequency scanning phased array antenna is used so that the received signal would have a distorted spectrum with the maximum amplitude frequency component linked to the direction of the signal. Based on the frequency scanning, the retrodirectivity system can be used for wireless power transfer or for reactive jamming. Special circuit is designed to receive the signal with strongest power and to isolate the frequency component with maximum amplitude. Phase-locked loop (PLL) circuit is used to link such frequency to specific phase shift that is introduced to the transmitter array antenna to send a new signal to the same direction of the received signal. ADS simulation is performed to demonstrate the performance of each block.

A 5.8-GHz Phased Array System Using Power-Variable Phase-Controlled Magnetrons for Wireless Power Transfer

2020 ◽  
Vol 68 (11) ◽  
pp. 4951-4959
Author(s):  
Bo Yang ◽  
Xiaojie Chen ◽  
Jie Chu ◽  
Tomohiko Mitani ◽  
Naoki Shinohara
Keyword(s):  
Phased Array ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Variable Phase
Sign in / Sign up

Export Citation Format

Share Document