Title :
Wireless power transmission for biomedical implants: The role of near-zero threshold CMOS rectifiers
Author :
Ali Mohammadi;Jean-Michel Redoute;Mehmet R. Yuce
Author_Institution :
Biomedical Integrated Circuits and Sensors Lab in the Electrical and Computer Systems Engineering Department, Monash University, Clayton (3800), VIC, Australia
Abstract :
Biomedical implants require an electronic power conditioning circuitry to provide a stable electrical power supply. The efficiency of wireless power transmission is strongly dependent on the power conditioning circuitry specifically the rectifier. A cross-connected CMOS bridge rectifier is implemented to demonstrate the impact of thresholds of rectifiers on wireless power transfer. The performance of the proposed rectifier is experimentally compared with a conventional Schottky diode full wave rectifier over 9cm distance of air and tissue medium between the transmitter and receiver. The output voltage generated by the CMOS rectifier across a 1KΩ resistive load is around twice as much as the Schottky rectifier.
Keywords :
"CMOS integrated circuits","Bridge circuits","Schottky diodes","Implants","Receivers","Transmitters","Power measurement"
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2015 37th Annual International Conference of the IEEE
Electronic_ISBN :
1558-4615
DOI :
10.1109/EMBC.2015.7319625
