University of Oulu

Sarestoniemi, M., Pomalaza-Raez, C., Kissi, C., Berg, M., Hamalainen, M., & Iinatti, J. (2020). WBAN Channel Characteristics Between Capsule Endoscope and Receiving Directive UWB On-Body Antennas. IEEE Access, 8, 55953–55968.

WBAN channel characteristics between capsule endoscope and receiving directive UWB on-body antennas

Saved in:
Author: Särestöniemi, Mariella1; Pomalaza-Ráez, Carlos2; Kissi, Chaïmaâ3;
Organizations: 1Centre for Wireless Communications, Faculty of Information Technology and Electrical Engineering, University of Oulu, Oulu, Finland
2Department of Electrical and Computer Engineering, Purdue University at Fort Wayne, Fort Wayne, IN, USA
3Electronics and Telecommunication Systems Research Group, National School of Applied Sciences (ENSA), Ibn Tofail University, Kenitra, Morocco
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.6 MB)
Persistent link:
Language: English
Published: Institute of Electrical and Electronics Engineers, 2020
Publish Date: 2020-04-28


This paper presents a study on the ultra wideband (UWB) radio channel characteristics between a capsule endoscope and a directive on-body antenna in different parts of the small intestine. The study is conducted using a finite integration technique (FIT) based electromagnetic simulation software CST Studio Suite and four of its anatomical voxel models. The capsule endoscope model is set inside different areas of the small intestine of the voxel models. A recently published directive on-body antenna designed for in-body communications is used in the evaluations. The obtained frequency and time domain channel characteristics are compared with previously published results with another directive on-body antenna designed for capsule endoscopy communications. Power flow presentations are used to understand differences obtained with two on-body antennas. Different rotation angles of the capsule are also considered in this study. It is found that channel characteristics vary remarkably depending on the antenna location in the small intestine and location of the on-body antenna. Thus, the on-body antennas should be located carefully to ensure coverage over the whole intestine area. Path loss does not only depend on the distance between a capsule and the on-body antenna but also on the tissues between the capsule and on-body antennas. Obviously, the antenna patterns have clear impact on the received signal’s strength. Furthermore, orientation of the capsule affects also strongly impact when linearly polarized antennas are used.

see all

Series: IEEE access
ISSN: 2169-3536
ISSN-E: 2169-3536
ISSN-L: 2169-3536
Volume: 8
Pages: 55953 - 55968
DOI: 10.1109/ACCESS.2020.2982247
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported in part by the Projects WBAN Communications in the Congested Environments (MeCCE), the Academy of Finland 6Genesis Flagship, under Grant 318927, and in part by the European Union’s Horizon 2020 Programme through the Marie Sklodowska-Curie under Grant 872752.
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
Copyright information: This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see