A Preliminary Study of On/Off-Body Propagation Channels for Brain Telemetry Using a Flexible Wearable Antenna

Published

June 20, 2023

Author(s)

Mariella Särestöniemi, Kamran Sayrafian, Marko Sonkki, Jari Iinatti

Abstract

Flexible electronics are envisioned to play a major role in future wearable medical devices. An important component of this technology is flexible antennas. This paper presents a preliminary study of on-body and off-body propagation channels in Body Area Networks (BAN) using a small Ultra WideBand (UWB) flexible wearable antenna. The research is carried out with physical measurements in an anechoic chamber and a small laboratory room. The on-body measurements include propagation channels between two wearable devices placed on the head and various locations on the arm (i.e., shoulder to wrist). The off-body measurements cover propagation channels between a head-mounted device and an external device placed at various distances from the body. The wearable devices in these measurements use a small flexible antenna that can easily conform to the surface of the body. The measurements are conducted to better understand and characterize the wireless communication channels in applications such as brain monitoring or brain computer interface. The measurement results show that the UWB flexible antenna presented here performs well for both on-body and off-body communication channels.

Conference Dates

May 10-12, 2023

Conference Location

Lincoln, NE, US

Conference Title

17th IEEE International Symposium on Medical Information and Communication technology, (IEEE ISMICT 2023)

Pub Type

Conferences

Download Paper

https://doi.org/10.1109/ISMICT58261.2023.10152221

Local Download

Keywords

Body Area Networks, Brain monitoring, Brain Computer Interface, RF propagation measurements, Ultra WideBand

Citation

Särestöniemi, M. , Sayrafian, K. , Sonkki, M. and Iinatti, J. (2023), A Preliminary Study of On/Off-Body Propagation Channels for Brain Telemetry Using a Flexible Wearable Antenna, 17th IEEE International Symposium on Medical Information and Communication technology, (IEEE ISMICT 2023), Lincoln, NE, US, [online], https://doi.org/10.1109/ISMICT58261.2023.10152221, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=936668 (Accessed October 9, 2025)