University of Oulu

C. Kissi et al., "Compact Directive On-body UWB Antenna for Wireless Capsule Endoscopy Systems," 2020 International Symposium on Advanced Electrical and Communication Technologies (ISAECT), 2020, pp. 1-6, doi: 10.1109/ISAECT50560.2020.9523710

Compact Directive On-body UWB Antenna for Wireless Capsule Endoscopy Systems

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Author: Kissi, Chaïmaâ1; Särestöniemi, Mariella2; Kumpuniemi, Timo2;
Organizations: 1Electronic Electronics and Telecommunication Systems Research Group, National School of Applied Sciences (ENSA) Ibn Tofail University Kenitra, Morocco
2Centre for Wireless Communications, Faculty of Information Technology and Electrical Engineering University of Oulu Oulu, Finland
3Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering University of Oulu Oulu, Finland
4Department of Electrical and Computer Engineering Purdue University Fort Wayne, Indiana 46805, USA
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.5 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2021102151865
Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2021-10-21
Description:

Abstract

Wireless Capsule Endoscopy (WCE) application is a challenging topic inciting a good designed receiving antenna, in order to improve the wireless communication with the capsule endoscope. In this context, the paper introduces a compact antenna operating at the low Ultra-Wide band (UWB) 3.75–4.25 GHz, defined in IEEE 802.15.6 standard for BAN (Body Area Networks) applications. The proposed UWB antenna is targeted to on-body use, to serve of receiving antenna, and has a total size of 30×25×1.6 mm3. In free space, the antenna has a directional radiation pattern with 9 dB measured gain at 4 GHz center frequency, and it covers the - 10 dB impedance bandwidth of 3.75–4.45 GHz range. Then, the antenna was placed at different distances next to a voxel model, to consider the human body effect on the antenna characteristics. Besides, measurements were carried out on a male person by taking into account two antenna positions, named “Parallel” and “perpendicular”, on the human body surface. The proposed antenna does not present any risk on the person safety. The maximum SAR value is estimated of 0.095 W/kg for the different positions, in compliance with IEEE C95.3 standard on 10 g average tissue. The on-body matching studies were followed by in-body investigations, by analyzing the power consumption by means of power-field probes, from skin to the Small Intestine (SI) layers in voxel model. All the conducted studies conclude that the antenna, in both positions, is a good receiving antenna suitable for Wireless Capsule Endoscopy communications.

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ISBN: 978-1-6654-2222-2
ISBN Print: 978-1-6654-4677-8
Pages: 1 - 6
Article number: 9523710
DOI: 10.1109/ISAECT50560.2020.9523710
OADOI: https://oadoi.org/10.1109/ISAECT50560.2020.9523710
Host publication: 2020 International Symposium on Advanced Electrical and Communication Technologies, ISAECT 2020
Conference: International Symposium on Advanced Electrical and Communication Technologies
Type of Publication: A4 Article in conference proceedings
Field of Science: 217 Medical engineering
213 Electronic, automation and communications engineering, electronics
Subjects:
SAR
Funding: This work was funded by the Academy of Finland 6Genesis Flagship, grant number 318927.
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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