Title
Biological channel modeling and implantable UWB antenna design for neural recording systems.
Abstract
Ultrawideband (UWB) short-range communication systems have proved to be valuable in medical technology, particularly for implanted devices, due to their low-power consumption, low cost, small size, and high data rates. Neural activity monitoring in the brain requires high data rate (800 kb/s per neural sensor), and we target a system supporting a large number of sensors, in particular, aggregate transmission above 430 Mb/s (∼512 sensors). Knowledge of channel behavior is required to determine the maximum allowable power to 1) respect ANSI guidelines for avoiding tissue damage, and 2) respect FCC guidelines on unlicensed transmissions. We utilize a realistic model of the biological channel to inform the design of antennas for the implanted transmitter and the external receiver under these requirements. Antennas placement is examined under two scenarios having contrasting power constraints. Performance of the system within the biological tissues is examined via simulation and experiment. Our miniaturized antennas, 12 mm ×12 mm, need worst-case receiver sensitivities of -38 and -30.5 dBm for the first and second scenarios, respectively. These sensitivities allow us to successfully detect signals transmitted through tissues in the 3.1-10.6-GHz UWB band.
Year
DOI
Venue
2015
10.1109/TBME.2014.2339836
IEEE transactions on bio-medical engineering
Keywords
DocType
Volume
low-power consumption,biomedical telemetry,neural recording,neural recording system,medical signal detection,frequency 3.1 ghz to 10.6 ghz,telemedicine,biological tissue damage,neurophysiology,transmitter implant,contrasting power constraint,standards,external receiver,implantable uwb antenna design,miniaturized antenna,patient monitoring,unlicensed transmission,ansi guideline,worst-case receiver sensitivity,low-power electronics,prosthetics,medical signal processing,implanted device cost,maximum allowable power,ultrawideband,transmitters,biological channel modeling,implanted device size,body sensor networks,implantable antenna,fcc guideline,size 12 mm,electronic data interchange,channel behavior knowledge,simulation,signal transmission,receivers,channel modeling,neural sensor number,average specific absorption rate (asar),ultra wideband antennas,aggregate transmission,antenna placement,biological tissues,medical technology,signal detection,biomedical electronics,ultrawideband short-range communication system,brain models,brain neural activity monitoring,high implanted device data rate,telemetry
Journal
62
Issue
ISSN
Citations 
1
1558-2531
12
PageRank 
References 
Authors
0.83
14
4
Name
Order
Citations
PageRank
Hadi Bahrami1769.55
Seyed Abdollah Mirbozorgi2738.61
Leslie A. Rusch316733.74
B Gosselin435360.22