A Dual-Purpose Microwave-Optical Component for Wireless Capsule Endoscopy - a Feasibility Study by Radio Link Analysis

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Authors

Date

2025

Department

Department of Electronics and Nanoengineering
Department of Electrical Engineering and Automation

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Mcode

Degree programme

Language

en

Pages

12

Series

IEEE Transactions on Biomedical Engineering, Volume 72, issue 11, pp. 3221-3232

Abstract

Wireless capsule endoscopy (WCE) is the only option for non-invasive small intestine disease diagnostics. However, the small size of the capsules poses a major design challenge for engineers since multiple optical and electrical components must reside inside the capsules. This article proposes a space-saving dual-purpose component utilized in both optical image capturing and microwave wireless data transmission of a WCE capsule at the 915 MHz industrial-scientific-medical band. The optical performance is verified through ray-tracing simulations, whereas the microwave operation is demonstrated by full-wave impedance simulations and by conducting a radio link simulation and measurement with an up-scaled prototype. The results show that the proposed component can be utilized in capsule optics to achieve an acceptable imaging quality. Furthermore, the component operates as an antenna, providing adequate link gains for WCE wireless communications.

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Publisher Copyright: © 1964-2012 IEEE.

Keywords

antenna, capsule endoscopy, dual-view, lens, link gain, mirror, radio link

Other note

DOI

10.1109/TBME.2025.3564653

Citation

Kiviharju, P, Ha-Van, N, Vähä-Savo, L, Tuomela, J, Icheln, C, Haneda, K, Tretyakov, S, Holopainen, J, Fang, Q, Hagiwara, H & Taylor, Z D 2025, 'A Dual-Purpose Microwave-Optical Component for Wireless Capsule Endoscopy - a Feasibility Study by Radio Link Analysis', IEEE Transactions on Biomedical Engineering, vol. 72, no. 11, pp. 3221-3232. https://doi.org/10.1109/TBME.2025.3564653

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https://urn.fi/URN:NBN:fi:aalto-202511198831

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[article-cris] Sähkötekniikan korkeakoulu / ELEC