Dielectric sensitivity of different antennas types for microwave-based head imaging: Numerical study and experimental verification
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21460%2F20%3A00342982" target="_blank" >RIV/68407700:21460/20:00342982 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1017/S1759078720000835" target="_blank" >https://doi.org/10.1017/S1759078720000835</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/S1759078720000835" target="_blank" >10.1017/S1759078720000835</a>
Alternative languages
Result language
angličtina
Original language name
Dielectric sensitivity of different antennas types for microwave-based head imaging: Numerical study and experimental verification
Original language description
The design of proper antenna element (AE) for microwave-based head imaging or brain stroke detection is a crucial challenge in the development process of microwave imaging (MWI) systems. The main purpose of this paper was to design, fabricate, and experimentally verify the compact and dimensions-reduced H-slot antenna suitable for the new generation of multichannel MWI system for brain stroke detection. The slot antenna type was chosen based on the numerical study of three AEs available in the literature, i.e. bow tie, slot, and waveguide-based. The study was focused on the sensitivity of the antennae (change of magnitude and phase of S21) due to dielectric parameters change or type and diameter of inclusion in a head phantom representing a hemorrhagic (HEM) or ischemic (ISCH) stroke phantom, respectively. Further, the analysis of antenna radiation to lossy medium/air and its immunity against plane wave exposure was carried out. The H-slot antenna was fabricated and experimentally verified (measurements of reflection as well as transmission coefficients) using a liquid head phantom with inserted HEM stroke phantom (both prepared as a mixture of propylene glycol, water, and salt). The phantoms were filled inside the designed two-port test system. Numerical models were validated by comparing calculated and measured S-parameters. The sensitivity of the H-slot antenna to the presence of the HEM stroke phenomenon within the phantom of the head was also demonstrated. The main advantage of the proposed H-slot antenna is its small dimensions, easy, inexpensive, and repeatable fabrication as well as mechanical stability.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
<a href="/en/project/GJ17-00477Y" target="_blank" >GJ17-00477Y: Physical nature of interactions of EM fields generated by MTM structures with human body and study of their prospective use in medicine</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Microwave and Wireless Technologies
ISSN
1759-0787
e-ISSN
1759-0795
Volume of the periodical
12
Issue of the periodical within the volume
6
Country of publishing house
GB - UNITED KINGDOM
Number of pages
14
Pages from-to
982-995
UT code for WoS article
000587684100006
EID of the result in the Scopus database
2-s2.0-85089706260