Title :
Remotely powered telemetry system with dynamic power-adaptation for freely moving animals
Author :
Kilinc, Enver G. ; Maloberti, Franco ; Dehollain, Catherine
Author_Institution :
RF-IC Group, Ecole Polytech. Fed. de Lausanne, Lausanne, Switzerland
Abstract :
A complete implantable system for monitoring vital parameters via bio-sensors inside freely moving laboratory animals and its experimental verification are presented. The system harvests 2 mW power wirelessly and the power is transmitted at 10 MHz by an array of coils placed under the living space of the animal. Dynamic power-adaptation is used to transfer sufficient power to implanted module by adjusting the base module power with respect to animal position. Results on the micro-modules incorporating custom 0.18 um CMOS circuits verify a 80% power efficiency at 2 mW load and 60 dB of ripple suppression, as required to supply the implanted bio-sensors.
Keywords :
CMOS integrated circuits; biomedical telemetry; coils; patient monitoring; prosthetic power supplies; radiofrequency power transmission; sensors; animal position; base module power; coil array; custom CMOS circuits; dynamic power-adaptation; freely moving animals; implantable system; implanted biosensors; implanted module; micromodules; power 2 mW; power efficiency; remotely powered telemetry system; ripple suppression; size 0.18 mum; vital parameter monitoring; Coils; Mice; Regulators; Sensor systems; Transistors; Voltage control;
Conference_Titel :
Biomedical Circuits and Systems Conference (BioCAS), 2012 IEEE
Conference_Location :
Hsinchu
Print_ISBN :
978-1-4673-2291-1
Electronic_ISBN :
978-1-4673-2292-8
DOI :
10.1109/BioCAS.2012.6418447
