University of Oulu

K. Turbic, M. Särestöniemi, M. Hämäläinen, T. Kumpuniemi and L. M. Correia, "A Preliminary Analysis of User’s Body Impact on Signal Polarization in WBANs," 2020 14th European Conference on Antennas and Propagation (EuCAP), Copenhagen, Denmark, 2020, pp. 1-4, doi: 10.23919/EuCAP48036.2020.9135582

A preliminary analysis of user’s body impact on signal polarization in WBANs

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Author: Turbic, Kenan1; Särestöniemi, Mariella2; Hämäläinen, Matti2;
Organizations: 1INESC-ID / IST, University of Lisbon, Lisbon, Portugal
2Centre for Wireless Communications (CWC), University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1.2 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2020080347900
Language: English
Published: Institute of Electrical and Electronics Engineers, 2020
Publish Date: 2020-08-03
Description:

Abstract

This paper analyses the impact of the human body on antenna radiation characteristics, with a focus on the polarization aspect. The effect of the body tissues on a wrist-worn ultra-wideband double loop antenna radiation characteristics is investigated at 3, 4 and 5 GHz, based on numerical full-wave simulations complemented with a voxel model of a hand. Results show a strong influence of the body on the gain and polarization characteristics; the radiation in the direction towards the body is suppressed by 20 dB or more, and the antenna polarization changes from a linear to an elliptical one. By simulating an off-body communications scenario with the user walking at a fixed distance from the off-body antenna, up to 6.5 dB lower received power is obtained by using the wearable antenna radiation pattern simulated with the hand phantom, compared to the case when the antenna in free space.

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ISBN: 978-88-31299-00-8
ISBN Print: 978-1-7281-3712-4
Pages: 1 - 4
DOI: 10.23919/EuCAP48036.2020.9135582
OADOI: https://oadoi.org/10.23919/EuCAP48036.2020.9135582
Host publication: 14th European Conference on Antennas and Propagation (EuCAP), March 15-20, 2020, Copenhagen, Denmark
Conference: European Conference on Antennas and Propagation
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Subjects:
Funding: The research at IST was performed within the framework of the COST Action CA15104, IRACON. The research at CWC has been financially supported partly by the project WBAN Communications in the Congested Environments (MeCCE) and in part by the Academy of Finland 6Genesis Flagship (grant 318927). Dr. Marko Sonkki is acknowledged for his advice with CST simulator.
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