Maximum Radiation Efficiency of Arbitrarily Shaped Implantable Antennas

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F24%3A00374573" target="_blank" >RIV/68407700:21230/24:00374573 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1109/TAP.2024.3365860" target="_blank" >https://doi.org/10.1109/TAP.2024.3365860</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/TAP.2024.3365860" target="_blank" >10.1109/TAP.2024.3365860</a>

Result language
angličtina
Original language name
Maximum Radiation Efficiency of Arbitrarily Shaped Implantable Antennas
Original language description
Performance limitations for implanted antennas, taking radiation efficiency as the metric, are presented. The performance limitations use a convex optimization procedure with the current density inside the implant acting as its degree of freedom. The knowledge of the limitations provides useful information in design procedures and physical insights. Ohmic losses in the antenna and surrounding tissue are considered and quantitatively compared. The interaction of all parts of the system is taken into account in a full-wave manner via the hybrid computation method. The optimization framework is thoroughly tested on a realistic implanted antenna design that is treated both experimentally and as a model in a commercial electromagnetic (EM) solver. Good agreement is reported. To demonstrate the feasibility of developed performance limitations, they are compared to the performance of a loop and a dipole antenna showing the importance of various loss mechanisms during the design process. The tradeoff between tissue loss and antenna ohmic loss indicates critical points at which the optimal solution drastically changes and the chosen topology for a specific design should be changed.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20201 - Electrical and electronic engineering

Project
<a href="/en/project/GM21-19025M" target="_blank" >GM21-19025M: Optimal Electromagnetic Design Based on Exact Reanalysis</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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