Title :
NeuralWISP: An energy-harvesting wireless neural interface with 1-m range
Author :
Holleman, Jeremy ; Yeager, Dan ; Prasad, Richa ; Smith, Joshua R. ; Otis, Brian
Author_Institution :
Dept. of Electr. Eng., Univ. of Washington, Seattle, WA
Abstract :
We present the NeuralWISP, a wireless neural interface operating from harvested RF energy. The NeuralWISP is compatible with commercial RFID readers and operates at a range up to 1m. It includes a custom low-noise, low power amplifier IC for processing the neural signal and an analog spike detection circuit for reducing digital computational requirements and communications bandwidth. Our system monitors the neural signal and periodically transmits the spike density in a user-programmable time window. The entire system draws an average 20 muA from the harvested 1.8V supply.
Keywords :
UHF integrated circuits; bioelectric phenomena; biomedical electronics; low noise amplifiers; low-power electronics; medical signal detection; medical signal processing; microcontrollers; neurophysiology; power supply circuits; prosthetics; radiofrequency identification; NeuralWISP; analog spike detection circuit; communication bandwidth; current 20 muA; digital computational requirement; harvested RF energy; low power amplifier IC; microcontroller; neural signal monitoring; neural signal processing; spike density transmission; standard commercial UHF RFID reader; user-programmable time window; voltage 1.8 V; wireless implantable neural interface; wireless-identification-and-sensing platform; Circuits; Coils; Microcontrollers; RFID tags; Radio frequency; Radiofrequency identification; Strain measurement; Temperature measurement; Voltage; Wireless sensor networks;
Conference_Titel :
Biomedical Circuits and Systems Conference, 2008. BioCAS 2008. IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-2878-6
Electronic_ISBN :
978-1-4244-2879-3
DOI :
10.1109/BIOCAS.2008.4696868
