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Antenna system design for improved wireless capsule endoscope links at 433 MHz

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Suzan Miah, Md
dc.contributor.author Khan, Ahsan Noor
dc.contributor.author Icheln, Clemens
dc.contributor.author Haneda, Katsuyuki
dc.contributor.author Takizawa, Ken Ichi
dc.date.accessioned 2019-05-06T09:09:37Z
dc.date.available 2019-05-06T09:09:37Z
dc.date.issued 2019-04-01
dc.identifier.citation Suzan Miah , M , Khan , A N , Icheln , C , Haneda , K & Takizawa , K I 2019 , ' Antenna system design for improved wireless capsule endoscope links at 433 MHz ' , IEEE Transactions on Antennas and Propagation , vol. 67 , no. 4 , 8648490 , pp. 2687-2699 . https://doi.org/10.1109/TAP.2019.2900389 en
dc.identifier.issn 0018-926X
dc.identifier.issn 1558-2221
dc.identifier.other PURE UUID: 4114f725-2130-44a3-a583-63213aaf8870
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/4114f725-2130-44a3-a583-63213aaf8870
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85064254137&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/33459421/ELEC_Miah_Antenna_system_design_IEEETroAaP.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/37646
dc.description.abstract Wireless capsule endoscopy (WCE) systems are used to capture images of the human digestive tract for medical applications. The antenna is one of the most important components in a WCE system. In this paper, we present novel small antenna solutions for a WCE system operating at the 433 MHz ISM band along with a link budget analysis. The in-body capsule transmitter uses an ultrawideband outer wall conformal loop antenna, whereas the on-body receiver uses a printed monopole antenna with a partial ground plane. A colon-equivalent tissue phantom and CST Gustav voxel human body model were used for the numerical studies of the capsule antenna. The simulation results in the colon-tissue phantom were validated through in vitro measurements using a liquid phantom. According to the phantom simulations, the capsule antenna has -10 dB impedance matching from 309 to 1104 MHz. The ultrawideband characteristic enables the capsule antenna to tolerate the detuning effects due to electronic modules in the capsule and due to theproximity of various different tissues in gastrointestinal tracts. The same design methodology was applied to on-body antennas followed by in vitro and ex vivo measurements for validation. The on-body antenna exceeds -10 dB impedance matching from 385 to 502 MHz both in simulations and measurements. The path loss for the radio link between an in-body capsule transmitter and an on-body receiver using our antenna solutions, in simulations and measurements, is less than 50 dB for any capsule orientation and location, ensuring sufficient signal level at the receiver, hereby enabling an improved capsule endoscope. en
dc.format.extent 13
dc.format.extent 2687-2699
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries IEEE Transactions on Antennas and Propagation en
dc.relation.ispartofseries Volume 67, issue 4 en
dc.rights openAccess en
dc.title Antenna system design for improved wireless capsule endoscope links at 433 MHz en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Katsuyuki Haneda Group
dc.contributor.department Queen Mary University of London
dc.contributor.department Department of Electronics and Nanoengineering
dc.contributor.department Japan National Institute of Information and Communications Technology
dc.subject.keyword Conformal antenna
dc.subject.keyword in-to-on body propagation
dc.subject.keyword wireless capsule endoscope
dc.identifier.urn URN:NBN:fi:aalto-201905062766
dc.identifier.doi 10.1109/TAP.2019.2900389
dc.type.version acceptedVersion

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