Title :
CMUT ultrasonic power link front-end for wireless power transfer deep in body
Author :
Banerji, Sourangsu ; Wang Ling Goh ; Jia Hao Cheong ; Minkyu Je
Author_Institution :
Inst. of Microelectron., A*STAR (Agency for Sci., Technol. & Res.), Singapore, Singapore
Abstract :
Wireless implantable devices have revolutionized the field of biomedical engineering for as long as adequate power supplies are conjured. This paper presents an ultrasonic power link front-end interfaced with a capacitive micromachined ultrasonic transducer (CMUT). The ultrasonic power link front-end consists of a rectifier, a charge pump, a clock extractor and a phase generator. The power link front-end designed in 0.18-μm CMOS process provides a 17 V DC supply for the implant microsystem, e.g. neural stimulator. It achieves an overall power efficiency of 0.3% in simulation.
Keywords :
CMOS integrated circuits; bioMEMS; biomedical transducers; neurophysiology; prosthetic power supplies; rectifiers; ultrasonic transducers; wireless sensor networks; CMOS process; CMUT ultrasonic power link front-end; DC supply; biomedical engineering; capacitive micromachined ultrasonic transducer; charge pump; clock extractor; implant microsystem; neural stimulator; phase generator; power efficiency; power supplies; rectifier; voltage 17 V; wireless implantable devices; wireless power transfer; Acoustics; Charge pumps; Clocks; Rectifiers; Transducers; Wireless communication; Wireless sensor networks; Charge pump; capacitive Micromachined Ultrasonic Transducer; implantable biomedical devices; rectifiers; ultrasonic powering; wireless power transfer;
Conference_Titel :
Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO), 2013 IEEE MTT-S International
Conference_Location :
Singapore
DOI :
10.1109/IMWS-BIO.2013.6756176
