| Type of Document |
Master's Thesis |
| Author |
Wessel, Brian Langan
|
| Author's Email Address |
bwessel@neuronet.pitt.edu |
| URN |
etd-04152004-194608 |
| Title |
Analytical and Numerical Optimization of an Implantable Volume Conduction Antenna |
| Degree |
Master of Science in Electrical Engineering |
| Program |
Electrical Engineering |
| School |
School of Engineering |
| Advisory Committee |
| Advisor Name |
Title |
| Robert J. Sclabassi, M.D., Ph.D. |
Committee Chair |
| Mingui Sun, Ph.D. |
Committee Co-Chair |
| Ching-Chung Li |
Committee Member |
| John Robert Boston, Ph.D. |
Committee Member |
|
| Keywords |
- antenna
- telemetry
- biotelemetry
- neural prosthesis
- neuro-engineering
- dipole
- impedance
- finite element analysis
- FEA
- data communication
|
| Date of Defense |
2004-04-05 |
| Availability |
unrestricted |
Abstract
As implantable devices become increasingly sophisticated, a means of communication is required to transmit data to and from the device. A volume conduction antenna model has been developed that meets the size and power constraints of an in vivo environment. This thesis aims to optimize the shape, curvature, and orientation of these antennas. Analytical and numerical analysis shows that the performance is independent of the conic section used to simulate an antenna. Both analyses were also in agreement that highest curvatures achieve maximum surface potentials, and that the angle is dependent on the distance of the antenna from the surface of the head. Analytical analysis suggests that pointing the antenna elements directly at the surface may not be the optimum angle, but rather at a smaller angle. Too few data points were taken to make the same determination from the numerical case but the optimum angle does deviate from the hypothesized angle in the same way, suggesting a similar result. The numerical analysis was important as it facilitated the simulation of the epoxy between the antenna elements. Incorporating epoxy into the simulation showed 30-35% increases in surface potential. A reflective sheet was then added showing further increases in surface potential.
|
| Files |
| Filename |
Size |
Approximate Download Time
(Hours:Minutes:Seconds)
|
| 28.8 Modem |
56K Modem |
ISDN (64 Kb) |
ISDN (128 Kb) |
Higher-speed Access |
| |
Wessel2004.pdf |
2.83 Mb |
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