Title :
An efficient 13.56 MHz active back-telemetry rectifier in standard CMOS technology
Author :
Bawa, Gaurav ; Huang, Alex Q. ; Ghovanloo, Maysam
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA
fDate :
May 30 2010-June 2 2010
Abstract :
In this paper, we present the design of a high-frequency (HF) rectifier implemented in a 0.5-μm 3M/2P 5V standard CMOS process for wireless power transmission across short-range inductive links. The rectifier has been optimized for 13.56 MHz ISM band, and achieves power conversion efficiency (PCE) of ~83% and voltage conversion ratio >92% in post-layout simulations. We have successfully incorporated a dual-mode back-telemetry capability in this rectifier with little area or efficiency overhead, which tolerates wide load-fluctuations at the secondary side. With these improvements, this active back-telemetry rectifier (ABTR) is geared towards increasing the overall system efficiency, data transfer rate, and reading range in applications such as implantable microelectronic devices (IMD) and radio frequency identification (RFID).
Keywords :
CMOS integrated circuits; inductive power transmission; radiotelemetry; rectifiers; ABTR; RFID; active back-telemetry rectifier; frequency 13.56 MHz; high-frequency rectifier; microelectronic devices; radio frequency identification; short-range inductive links; standard CMOS technology; voltage 5 V; wireless power transmission; CMOS technology; Circuits; Coils; Frequency; Multiplexing; Radiofrequency identification; Rectifiers; Switches; Transponders; Voltage;
Conference_Titel :
Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on
Conference_Location :
Paris
Print_ISBN :
978-1-4244-5308-5
Electronic_ISBN :
978-1-4244-5309-2
DOI :
10.1109/ISCAS.2010.5537296
