Title :
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
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;
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
DOI :
10.1109/IMWS-BIO.2013.6756196
