Link to the University of Pittsburgh Homepage
Link to the University Library System Homepage Link to the Contact Us Form

Implanted miniaturized antenna for brain computer interface applications: Analysis and design

Zhao, Y and Rennaker, RL and Hutchens, C and Ibrahim, TS (2014) Implanted miniaturized antenna for brain computer interface applications: Analysis and design. PLoS ONE, 9 (7).

Published Version
Available under License : See the attached license file.

Download (1MB) | Preview
[img] Plain Text (licence)
Available under License : See the attached license file.

Download (1kB)


Implantable Brain Computer Interfaces (BCIs) are designed to provide real-time control signals for prosthetic devices, study brain function, and/or restore sensory information lost as a result of injury or disease. Using Radio Frequency (RF) to wirelessly power a BCI could widely extend the number of applications and increase chronic in-vivo viability. However, due to the limited size and the electromagnetic loss of human brain tissues, implanted miniaturized antennas suffer low radiation efficiency. This work presents simulations, analysis and designs of implanted antennas for a wireless implantable RF-powered brain computer interface application. The results show that thin (on the order of 100 micrometers thickness) biocompatible insulating layers can significantly impact the antenna performance. The proper selection of the dielectric properties of the biocompatible insulating layers and the implantation position inside human brain tissues can facilitate efficient RF power reception by the implanted antenna. While the results show that the effects of the human head shape on implanted antenna performance is somewhat negligible, the constitutive properties of the brain tissues surrounding the implanted antenna can significantly impact the electrical characteristics (input impedance, and operational frequency) of the implanted antenna. Three miniaturized antenna designs are simulated and demonstrate that maximum RF power of up to 1.8 milli-Watts can be received at 2 GHz when the antenna implanted around the dura, without violating the Specific Absorption Rate (SAR) limits. © 2014 Zhao et al.


Social Networking:
Share |


Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Zhao, Yyuz36@pitt.eduYUZ36
Rennaker, RL
Hutchens, C
Ibrahim, TStsi2@pitt.eduTSI20000-0001-6738-5855
ContributionContributors NameEmailPitt UsernameORCID
Date: 31 July 2014
Date Type: Publication
Journal or Publication Title: PLoS ONE
Volume: 9
Number: 7
DOI or Unique Handle: 10.1371/journal.pone.0103945
Schools and Programs: School of Medicine > Radiology
Swanson School of Engineering > Bioengineering
Refereed: Yes
Date Deposited: 26 Sep 2014 14:30
Last Modified: 14 Feb 2018 17:55


Monthly Views for the past 3 years

Plum Analytics

Actions (login required)

View Item View Item