Miniature Implantable Antennas for Biomedical Telemetry: From Simulation to Realization

We address numerical versus experimental design and testing of miniature implantable antennas for biomedical telemetry in the medical implant communications service band (402-405 MHz). A model of a novel miniature antenna is initially proposed for skin implantation, which includes varying parameters...

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Bibliographic Details
Published in:IEEE transactions on biomedical engineering 2012-11, Vol.59 (11), p.3140-3147
Main Authors: Kiourti, Asimina, Costa, Jorge R., Fernandes, Carlos A., Santiago, André G., Nikita, Konstantina S.
Format: Article
Language:English
Subjects:
Antenna measurements
Antennas
Biomedical telemetry
Computer Simulation
Containers
dielectric measurements
Electronics, Medical - instrumentation
Fabrication
Head - anatomy & histology
Head - physiology
Humans
implantable antenna
Implants, Experimental
in vitro
medical implant communications service (MICS) band
Numerical models
Permittivity measurement
Phantoms, Imaging
Prosthesis Design
Skin Physiological Phenomena
Telemedicine - instrumentation
Telemetry - instrumentation
Testing
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Summary:We address numerical versus experimental design and testing of miniature implantable antennas for biomedical telemetry in the medical implant communications service band (402-405 MHz). A model of a novel miniature antenna is initially proposed for skin implantation, which includes varying parameters to deal with fabrication-specific details. An iterative design-and-testing methodology is further suggested to determine the parameter values that minimize deviations between numerical and experimental results. To assist in vitro testing, a low-cost technique is proposed for reliably measuring the electric properties of liquids without requiring commercial equipment. Validation is performed within a specific prototype fabrication/testing approach for miniature antennas. To speed up design while providing an antenna for generic skin implantation, investigations are performed inside a canonical skin-tissue model. Resonance, radiation, and safety performance of the proposed antenna is finally evaluated inside an anatomical head model. This study provides valuable insight into the design of implantable antennas, assessing the significance of fabrication-specific details in numerical simulations and uncertainties in experimental testing for miniature structures. The proposed methodology can be applied to optimize antennas for several fabrication/testing approaches and biotelemetry applications.
ISSN:0018-9294
1558-2531
DOI:10.1109/TBME.2012.2202659