Title :
A Reconfigurable Differential CMOS RF Energy Scavenger With 60% Peak Efficiency and -21 dBm Sensitivity
Author :
Scorcioni, S. ; Larcher, Luca ; Bertacchini, Alessandro
Author_Institution :
DISMI Dept., Univ. di Modena e Reggio Emilia, Reggio Emilia, Italy
Abstract :
A differential RF-DC CMOS converter for RF energy scavenging based on a reconfigurable voltage rectifier topology is presented. The converter efficiency and sensitivity are optimized thanks to the proposed reconfigurable architecture. Prototypes, realized in 130 nm, provide a regulated output voltage of ~2 V when working at 868 MHz, with a -21 dBm sensitivity. The circuit efficiency peaks at 60%, remaining above the 40% for a 18 dB input power range.
Keywords :
CMOS integrated circuits; UHF integrated circuits; energy harvesting; power convertors; differential RF-DC CMOS converter; efficiency 60 percent; frequency 868 MHz; gain 18 dB; reconfígurable voltage rectifíer topology; reconfigurable differential CMOS RF energy scavenger; size 130 nm; Antenna measurements; CMOS integrated circuits; Radio frequency; Sensitivity; Transistors; Voltage control; CMOS technology; RF-DC power converters; energy scavenging; remote powering;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2243376
