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

fYear

2012

fDate

20-23 May 2012

Firstpage

2869

Lastpage

2872

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2012 IEEE International Symposium on

Conference_Location

Seoul

ISSN

0271-4302

Print_ISBN

978-1-4673-0218-0

Type

conf

DOI

10.1109/ISCAS.2012.6271912

Filename

6271912