Title :
Efficient Far-Field Radio Frequency Power Conversion System for Passively Powered Sensor Networks
Author :
Le, Triet ; Mayaram, Karti ; Fiez, Terri S.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR
Abstract :
An RF-DC power conversion system is designed in a 0.25mum CMOS technology to efficiently convert RF energy to DC voltages. The rectifier has 60% efficiency and can rectify input voltages as low as 50mV by using floating gate transistors as rectifying diodes. For distances of 15 meters, 1 volt DC is measured with 0.3muA load current at 906MHz. The system operates with 5.5muW (-22.6 dBm) received power, corresponding to 42 meters operating distance with a 4W source
Keywords :
CMOS integrated circuits; distributed sensors; rectifying circuits; 0.25 micron; 0.3 muA; 1 V; 15 m; 4 W; 42 m; 5.5 muW; 50 mV; 906 MHz; CMOS technology; floating gate transistors; radio frequency-DC power conversion; rectifying diodes; sensor networks; Circuits; Diodes; Electromagnetic scattering; Impedance matching; Parasitic capacitance; Power conversion; Radio frequency; Rectifiers; Sensor systems; Threshold voltage;
Conference_Titel :
Custom Integrated Circuits Conference, 2006. CICC '06. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
1-4244-0075-9
Electronic_ISBN :
1-4244-0076-7
DOI :
10.1109/CICC.2006.320874
