scholarly journals DC voltage boosting technique in radio frequency wireless power transfer systems utilising high PAPR digital modulations

2019 ◽  
Vol 13 (14) ◽  
pp. 2457-2463 ◽  
Author(s):  
Kyriakos Neophytou ◽  
Marco A. Antoniades
Keyword(s):  
Radio Frequency ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Dc Voltage ◽  
Digital Modulations ◽  
Boosting Technique

Radio frequency wireless power transfer to chip-scale apparatuses

2016 ◽  
Author(s):  
Liuqing Gao ◽  
Yansong Yang ◽  
Arakawa Brandon ◽  
Justin Postma ◽  
Songbin Gong
Keyword(s):  
Radio Frequency ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power

Energy harvesting through the radio frequency wireless power transfer

2013 ◽  
Author(s):  
K Pirapaharan ◽  
K Gunawickrama ◽  
D. S. De Silva ◽  
M. S. S. R. De Silva ◽  
T. L. K. C. Dharmawardhana ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Radio Frequency ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power

scholarly journals A 2.45 GHz FSS Loaded Rectifying Antenna

2021 ◽  
Author(s):  
UDAYABHASKAR PATTAPU ◽  
Sushrut Das
Keyword(s):  
Wireless Power Transfer ◽  
Input Power ◽  
Maximum Efficiency ◽  
Power Transfer ◽  
Wireless Power ◽  
Free Response ◽  
Dc Voltage ◽  
Received Power ◽  
Polarization Insensitive ◽  
Antenna Impedance

Abstract In this paper the development of a rectenna system has been presented for 2.45 GHz wireless power transfer application. The receiving element of the rectenna (or the antenna) has been designed to possess spurious free response at least up to 10 GHz to improve the RF-DC conversion efficiency. It was found that the gain of the antenna is not sufficient for rectenna application. Therefore, to improve the gain of the antenna, it has been loaded with an angle and polarization insensitive FSS. The FSS loaded antenna achieved 7.7 dB gain, 85% radiation efficiency, and single operating band at 2.45 GHz; which is suitable for developing a rectenna for wireless power transfer. To convert the received RF energy into DC voltage a 2.45 GHz matched rectifier circuit has been designed. L-type matching network has been used to match the complex rectifier impedance with the 50 Ω antenna impedance. 1.52 V output voltage was obtained for 7 dBm input power and 3 kΩ load. Achieved maximum efficiency is 66.13% for 1.1 mW received power. It has been shown that the FSS loading of the antenna has the capacity of drastically improve the efficiency of the rectenna system.

scholarly journals Effect of DC voltage source on the voltage and current of transmitter and receiver coil of 2.5 kHz wireless power transfer

2020 ◽  
Vol 9 (2) ◽  
Author(s):  
A. H. Butar-Butar ◽  
J. H. Leong ◽  
M. Irwanto
Keyword(s):  
Wireless Power Transfer ◽  
Voltage Source ◽  
Receiver Coil ◽  
Power Transfer ◽  
Wireless Power ◽  
Dc Voltage ◽  
Transmitter Coil ◽  
Current Flows ◽  
Set Up ◽  
Field Area

A solenoid supplied by alternating current (AC) voltage generates electromagnetic which has a field area depends on the level of supplied voltage and current flows through the solenoid. The electromagnetic filed can be captured by the other solenoid in the field area. This concept can be applied in a wireless power transfer (WPT) as presented in this paper. The WPT has transmitter coil and receiver coil which each has form of solenoid. The transmitter coil is connected a half bridge circuit to generate AC voltage on the transmitter coil which transferred to the receiver coil. In the experimental set up, the receiver coil is supplied by DC voltage source and it is changed to observe its effect on the voltage and current on the transmitter and receiver coil of the WPT system.

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