Publication:
A compact flexible circularly polarized implantable antenna for biotelemetry applications

dc.affiliation.dptoUC3M. Departamento de Teoría de la Señal y Comunicacioneses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Radiofrecuencia, Electromagnetismo, Microondas y Antenas (GREMA)es
dc.contributor.authorSarosh, Ahmad
dc.contributor.authorUllah, Shakir
dc.contributor.authorGhaffar, Adnan
dc.contributor.authorSegovia Vargas, Daniel
dc.date.accessioned2023-05-15T09:49:14Z
dc.date.available2023-05-15T09:49:14Z
dc.date.issued2022
dc.description.abstractWith the help of in-body antennas, the wireless communication among the implantable medical devices (IMDs) and exterior monitoring equipment, the telemetry system has brought us many benefits. Thus, a very thin-profile circularly polarized (CP) in-body antenna, functioning in ISM band at 2.45 GHz, is proposed. A tapered coplanar waveguide (CPW) method is used to excite the antenna. The radiator contains a pentagonal shape with five horizontal slits inside to obtain a circular polarization behavior. A bendable Roger Duroid RT5880 material (εr = 2.2, tanδ = 0.0009) with a typical 0.25 mm-thickness is used as a substrate. The proposed antenna has a total volume of 21 × 13 × 0.25 mm3. The antenna covers up a bandwidth of 2.38 to 2.53 GHz (150 MHz) in vacuum, while in skin tissue it covers 1.56 to 2.72 GHz (1.16 GHz) and in the muscle tissue covers 2.16 to 3.17 GHz (1.01 GHz). GHz). The flexion analysis in the x and y axes was also performed in simulation as the proposed antenna works with a wider bandwidth in the skin and muscle tissue. The simulation and the curved antenna measurements turned out to be in good agreement. The impedance bandwidth of −10 dB and the axis ratio bandwidth of 3 dB (AR) are measured on the skin and imitative gel of the pig at 27.78% and 35.5%, 13.5% and 4.9%, respectively, at a frequency of 2.45 GHz. The simulations revealed that the specific absorption rate (SAR) in the skin is 0.634 and 0.914 W/kg in muscle on 1g-tissue. The recommended SAR values are below the limits set by the federal communications commission (FCC). Finally, the proposed low-profile implantable antenna has achieved very compact size, flexibility, lower SAR values, high gain, higher impedance and axis ratio bandwidths in the skin and muscle tissues of the human body. This antenna is smaller in size and a good applicant for application in medical implants.en
dc.format.extent16
dc.identifier.bibliographicCitationAhmad, S., Ullah, S., Ghaffar, A. & Segovia Vargas, D. (2022). A Compact Flexible Circularly Polarized Implantable Antenna for Biotelemetry Applications. Computers, Materials & Continua, 73(2), 2457-2472.en
dc.identifier.doihttps://doi.org/10.32604/cmc.2022.025527
dc.identifier.issn1546-2218
dc.identifier.publicationfirstpage2457
dc.identifier.publicationissue2
dc.identifier.publicationlastpage2472
dc.identifier.publicationtitleComputers Materials & Continuaen
dc.identifier.publicationvolume73
dc.identifier.urihttps://hdl.handle.net/10016/37296
dc.identifier.uxxiAR/0000032686
dc.language.isoeng
dc.publisherTech Science Pressen
dc.rights© The authors.en
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaElectrónicaes
dc.subject.ecienciaÓpticaes
dc.subject.ecienciaTelecomunicacioneses
dc.subject.otherBiotelemetryen
dc.subject.otherCircularly Polarizeden
dc.subject.otherFlexible Antennaen
dc.subject.otherImplantable Antennaen
dc.subject.otherIsm Banden
dc.titleA compact flexible circularly polarized implantable antenna for biotelemetry applicationsen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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