Title :
RF power harvesting analog front-end circuit for implants
Author :
Guo, Haizheng ; Sobot, Robert
Author_Institution :
Univ. of Western Ontario, London, ON
Abstract :
Advances in hardware technology, and wireless network have led to widely usage of implantable wireless micro-systems. However, they still present many challenges in different applications, mainly due to the size constrains and limited available power. In this work, the simulation results of a low voltage CMOS 180 nm passive analog front-end circuit intended for powering implants are presented. The 2.4 GHz ISM band frequency is employed for transmitting power. The RF signal is converted to a DC power by a charge pump circuit and stabilized at 1 V by a voltage regulator. At the same time, the data signals are transmitted through the Medical Implant Communication Service (MICS) band. Subsequently, a low noise amplifier (LNA) with a voltage gain of 16.48 dB at 1 V is implemented to recover the data signals.
Keywords :
CMOS analogue integrated circuits; bioelectric phenomena; brain-computer interfaces; charge pump circuits; low noise amplifiers; medical computing; passive networks; prosthetics; voltage regulators; CMOS passive analog front-end circuit; DC power; ISM band frequency; RF power harvesting analog front-end circuit; charge pump circuit; data signals; hardware technology; implantable wireless microsystems; low noise amplifier; medical implant communication service band; transmitting power; voltage gain; voltage regulator; wireless network; CMOS analog integrated circuits; CMOS technology; Charge pumps; Circuit simulation; Hardware; Implants; Low voltage; Radio frequency; Regulators; Wireless networks; LNA; RFID; charge pump circuit; front-end circuit; implants; voltage regulator;
Conference_Titel :
Electrical and Computer Engineering, 2009. CCECE '09. Canadian Conference on
Conference_Location :
St. John´s, NL
Print_ISBN :
978-1-4244-3509-8
Electronic_ISBN :
0840-7789
DOI :
10.1109/CCECE.2009.5090259
