Title :
An integrated RF energy harvester for UHF wireless powering applications
Author :
Scorcioni, S. ; Larcher, Luca ; Bertacchini, Alessandro ; Vincetti, Luca ; Maini, M.
Author_Institution :
DISMI, Univ. di Modena e Reggio Emilia, Reggio Emilia, Italy
Abstract :
A RF energy harvester comprised of an integrated differential RF-DC converter and a differential PCB custom antenna is presented for wireless powering applications in the UHF band. The RF-DC converter, based on a reconfigurable voltage rectifier directly connected to a matched PCB antenna, is designed for high efficiency and sensitivity. Prototypes of the RF-DC converter realized in CMOS 130nm technology show a -16dBm sensitivity and a 60% peak efficiency. The RF-DC converters operate within the -16dBm÷0dBm input power range with an efficiency which remains above the 40% for more than 10dB. The RF energy harvester operates on the 840MHz-975MHz band thanks to the ad-hoc designed wide-band differential antenna.
Keywords :
CMOS integrated circuits; UHF antennas; UHF frequency convertors; UHF integrated circuits; broadband antennas; energy harvesting; inductive power transmission; power convertors; printed circuits; rectifying circuits; CMOS technology; UHF wireless powering applications; ad-hoc designed wideband differential antenna; differential PCB custom antenna; efficiency 60 percent; frequency 840 MHz to 975 MHz; integrated RF energy harvester; integrated differential RF-DC converter; matched PCB antenna; reconfigurable voltage rectifier; size 130 nm; Antenna measurements; Antennas; CMOS integrated circuits; Impedance; Radio frequency; Rectifiers; Voltage control; CMOS technology; RF-DC Power converters; Remote Powering;
Conference_Titel :
Wireless Power Transfer (WPT), 2013 IEEE
Conference_Location :
Perugia
Print_ISBN :
978--14673-5008-2
DOI :
10.1109/WPT.2013.6556890
