Electromagnetic modelling and measurement of antennas for wireless brain-machine interface systems

Author

Bjorninen, Toni ; Moradi, Elham ; Sydanheimo, Lauri ; Carmena, Jose M. ; Rabaey, Jan M. ; Ukkonen, Leena

Author_Institution

Dept. of Electron. & Commun. Eng., Tampere Univ. of Technol., Tampere, Finland

fYear

2013

fDate

9-11 Dec. 2013

Firstpage

1

Lastpage

3

Abstract

We analyze the power and voltage transfer in a wireless link from an on-body transmit antenna to 1×1×1 mm³ antenna in a cortical implant to provide power and data telemetry for a battery-free brain-machine interface microelectronic system. We compare the wireless link performance with regular, segmented, and tilted transmit loop antennas. Moreover, we analyze the performance improvement achieved by inserting a magneto-dielectric core in the implant antenna. We also attest the simulation model through measurements in a liquid head phantom.

Keywords

biomedical telemetry; brain models; brain-computer interfaces; loop antennas; medical computing; neurophysiology; phantoms; prosthetics; antenna measurement; battery-free brain-machine interface microelectronic system; cortical implant; data telemetry; electromagnetic modelling; implant antenna; liquid head phantom; magneto-dielectric core; on-body transmit antenna; performance improvement; power transfer; regular transmit loop antennas; segmented transmit loop antennas; simulation model; size 1 mm; tilted transmit loop antennas; voltage transfer; wireless brain-machine interface systems; wireless link performance; Antenna measurements; Biomedical measurement; Implants; Magnetic cores; Transmitting antennas; Wireless communication; Implantable antennas; brain-machine interface systems; liquid head phantom; wireless powering;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO), 2013 IEEE MTT-S International

Conference_Location

Singapore

Type

conf

DOI

10.1109/IMWS-BIO.2013.6756196

Filename

6756196