posted Aug 31, 2016, 1:28 PM by Khaled salama
WIRELESS power transfer (WPT) applications range from powering battery-less wireless sensors, RFIDs, and implantable devices, to the higher scale of space-based solar cells and wirelessly charged electric vehicles. Among this myriad of battery-less devices, the wireless power receiver is considered the linchpin for any given WPT system. A prototype is designed for UHF 433MHz RF
power-harvesting applications and is implemented using 0.18µm CMOS technology. It demonstrates an improvement of more than 40% in the rectifier power conversion efficiency (PCE) and an input power range extension of more than 50% relative to the conventional cross coupled rectifier. A sensitivity of -15.2dBm (30µW) input power for 1V output voltage and a peak
power-conversion efficiency of 65% are achieved for a 50kΩ load.
The work is in collaboration with Prof. Khalil, of the Electroscience lab, Ohio State Univeristy and is presented in details at IEEE Transactions on Circuits and Systems II: Express Briefs
IEEE Transactions on Circuits and Systems II: Express Briefs, 2016