Robust ultraminiature capsule antenna for ingestible and implantable applications

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F17%3A43932269" target="_blank" >RIV/49777513:23220/17:43932269 - isvavai.cz</a>

Result on the web

<a href="http://ieeexplore.ieee.org/document/8048539/" target="_blank" >http://ieeexplore.ieee.org/document/8048539/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TAP.2017.2755764" target="_blank" >10.1109/TAP.2017.2755764</a>

Result language

angličtina

Original language name

Robust ultraminiature capsule antenna for ingestible and implantable applications

Original language description

Progress in implantable and ingestible wireless biotelemetry requires versatile and efficient antennas to communicate reliably from a body. We propose an ultra-miniature 434 MHz antenna immune to impedance detuning caused by varying electromagnetic properties of the surrounding biological environment. It is designed for a standard input impedance of 50 Ω. The antenna is synthesized and miniaturized using a hybrid analytical–numerical approach, then optimized to conform to the inner surface of a 17 mm long biocompatible encapsulation (7 mm diameter). The substrate is 50µm thick. The capsule antenna is analyzed both in simplified and anatomically realistic heterogeneous phantoms. It remains matched at common implantation sites and through the whole gastrointestinal tract. Enhanced robustness allows using the antenna for a wide range of in-body applications. Computed reflection coefficients and radiation performance both show good agreement with measurements. The far-field is characterized with the direct illumination technique using an analog fiber optic link. The realized gain (measured max. value –19.6 dBi) exceeds the counterparts by about 3 dBi. The proposed antenna contributes to the further development of a new generation of miniature in-body devices that involve complex and dense integration of sensors, logic, and power source.

Czech name

—

Czech description

—

Type

J_imp - 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/LO1607" target="_blank" >LO1607: RICE - New technologies and concepts for smart industrial system</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

IEEE Transactions on Antennas and Propagation

ISSN

0018-926X

e-ISSN

—

Volume of the periodical

65

Issue of the periodical within the volume

11

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

6107-6119

UT code for WoS article

000414047400046

EID of the result in the Scopus database

2-s2.0-85021740415