Title :
High-efficiency CMOS rectifier for fully integrated mW wireless power transfer
Author :
Zargham, Meysam ; Gulak, P. Glenn
Author_Institution :
Sch. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
Abstract :
Design and measurement results are presented for a 0.18 μm CMOS full-wave rectifier architecture with 85.8% measured power efficiency at 40.68 MHz. The rectifier targets fully integrated power harvesting biomedical implant and lab-on-chip applications that use on-chip or mm-sized near-field inductively coupled wireless power transfer receivers. The rectifier uses feedback from the output to lower the voltage drop and increase the power efficiency. The rectifier achieves the highest measured efficiency in its class.
Keywords :
CMOS integrated circuits; inductive power transmission; lab-on-a-chip; prosthetic power supplies; rectifiers; CMOS full-wave rectifier architecture; frequency 40.68 MHz; fully integrated mW wireless power transfer; fully integrated power harvesting biomedical implant; high-efficiency CMOS rectifier; lab-on-chip applications; near-field inductively coupled wireless power transfer receivers; power efficiency; size 0.18 mum; voltage drop; CMOS integrated circuits; Coils; Power measurement; Receivers; Threshold voltage; Transistors; Voltage measurement;
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0218-0
DOI :
10.1109/ISCAS.2012.6271912
