University of Oulu

T. Kumpuniemi, J. Mäkelä, M. Hämäläinen, K. Y. Yazdandoost and J. Iinatti, "Measurements and Analysis on Dynamic Off-Body Radio Channels at UWB Frequencies," 2019 13th International Symposium on Medical Information and Communication Technology (ISMICT), Oslo, Norway, 2019, pp. 1-5. doi: 10.1109/ISMICT.2019.8743794

Measurements and analysis on dynamic off-body radio channels at UWB frequencies

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Author: Kumpuniemi, Timo1; Mäkelä, Juha-Pekka1; Hämäläinen, Matti1;
Organizations: 1Centre for Wireless Communications, University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.6 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2019
Publish Date: 2019-08-20


This paper presents measurements on dynamic off-body radio channels in an ultra wideband frequency range for wireless body area network communications focusing on the human body shadowing effect. Measurements were conducted in an anechoic chamber at a bandwidth of 2–8 GHz by using a vector network analyzer. The investigation was performed at several discrete frequencies. Two planar prototype antennas were utilized (dipole and double loop). Six on-body antenna locations were applied and one off-body site. At first, ten frequencies were examined at two links, and the path loss values and standard deviations were determined. Second, all the links were considered at three discrete frequencies. The mean path losses varied between 47.6–69.4 dB, at human-pole distances on the average of 2m. The maximum recorded value was 101.7 dB. No clear difference was noted between the antennas. The usage of dipole and double loop as a link antenna pair has no remarkable effect compared to the case when all the antennas are similar.

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Series: International Symposium on Medical Information and Communication Technology
ISSN: 2326-828X
ISSN-E: 2326-8301
ISSN-L: 2326-828X
ISBN: 978-1-7281-2342-4
ISBN Print: 978-1-7281-2342-1
Pages: 1 - 5
DOI: 10.1109/ISMICT.2019.8743794
Host publication: 2019 13th International Symposium on Medical Information and Communication Technology (ISMICT). 8-10 May 2019, Oslo
Conference: International Symposium on Medical Information and Communication Technology
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work has been partly funded by the Academy of Finland project 6Genesis Flagship (grant no. 318927).
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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