Increasing the radiation efficiency and matching stability of in-body capsule antennas

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F16%3A43928815" target="_blank" >RIV/49777513:23220/16:43928815 - isvavai.cz</a>
Result on the web
<a href="http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7481314" target="_blank" >http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7481314</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/EuCAP.2016.7481314" target="_blank" >10.1109/EuCAP.2016.7481314</a>

Result language
angličtina
Original language name
Increasing the radiation efficiency and matching stability of in-body capsule antennas
Original language description
We propose an approach to increase the operating range and matching stability of in-body ingestible or implantable capsule antennas. It involves using high permittivity biocompatible superstrate on a high-Q narrowband microstrip antenna. In this way, the antenna–body coupling can be significantly reduced, resulting in improved detuning immunity, increased radiation efficiency, and reduced power absorption inside the body. To demonstrate the feasibility of the proposed approach, we designed a mid-ISM band (433 to 434.8) MHz low-profile (85 µm) conformal microstrip antenna loaded with high permittivity ceramic superstrate. We achieved a simulated gain of –20.4 dBi. The radiation efficiency reaches 0.6%, which exceeds the counterparts operating within the same band by at least 3.5 times. The bandwidth is 26 MHz (6%), while the antenna remains matched (S11 < –10 dB) at 434 MHz within a wide range of tissue-equivalent phantoms. To validate the numerical results, we manufactured an antenna prototype and characterized it in terms of reflection coefficient S11.
Czech name
—
Czech description
—

Project
<a href="/en/project/GAP102%2F11%2F0498" target="_blank" >GAP102/11/0498: New adaptive higher-order monolithic methods for numerical solution of evolutionary multiphysics problems in electrical engineering</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
10th European Conference on Antennas and Propagation (EuCAP 2016) : proceedings
ISBN
978-88-907018-6-3
ISSN
—
e-ISSN
neuvedeno
Number of pages
5
Pages from-to
1-5
Publisher name
IEEE
Place of publication
Piscataway
Event location
Davos, Switzerland
Event date
Apr 10, 2016
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000400784900217

Similar results(10)