UWB Bowtie Antenna for Medical Microwave Imaging Applications

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F22%3A00359077" target="_blank" >RIV/68407700:21230/22:00359077 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21460/22:00359077

Výsledek na webu

<a href="https://doi.org/10.1109/TAP.2022.3161355" target="_blank" >https://doi.org/10.1109/TAP.2022.3161355</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TAP.2022.3161355" target="_blank" >10.1109/TAP.2022.3161355</a>

Jazyk výsledku

angličtina

Název v původním jazyce

UWB Bowtie Antenna for Medical Microwave Imaging Applications

Popis výsledku v původním jazyce

This work presents a design and experimental validation of a compact ultrawideband (UWB) bowtie antenna and balanced-to-unbalanced (balun) circuit for medical microwave imaging (MWI) applications working in the frequency band of 1-6 GHz. The UWB balun is perpendicularly attached to the planar bowtie arms, whose dimensions were miniaturized by rounding the bowtie edges. The antenna reflection coefficient was lower than -12 dB for tissues with a higher water content. The antenna possesses a high radiation efficiency (over 80%) and very low backward radiation. The predicted and measured specific absorption rate (SAR) distributions together with the electric field vertical bar E vertical bar distribution proved a symmetrical radiation pattern. The potential of the presented antenna element was demonstrated by successful reconstruction of the images from the measured data by MWI methods. For this purpose, an MWI system equipped with eight antennas was implemented. The radar approach was used to determine the region of interest (ROI) where the area for microwave tomography reconstruction was identified. The dielectric properties within the ROI were reconstructed by using the Born approximation method at 1 GHz. This confirmed that the antenna can be used as the basis for more accurate multifrequency MWI systems and can be implemented in UWB MWI hybrid systems.

Název v anglickém jazyce

UWB Bowtie Antenna for Medical Microwave Imaging Applications

Popis výsledku anglicky

This work presents a design and experimental validation of a compact ultrawideband (UWB) bowtie antenna and balanced-to-unbalanced (balun) circuit for medical microwave imaging (MWI) applications working in the frequency band of 1-6 GHz. The UWB balun is perpendicularly attached to the planar bowtie arms, whose dimensions were miniaturized by rounding the bowtie edges. The antenna reflection coefficient was lower than -12 dB for tissues with a higher water content. The antenna possesses a high radiation efficiency (over 80%) and very low backward radiation. The predicted and measured specific absorption rate (SAR) distributions together with the electric field vertical bar E vertical bar distribution proved a symmetrical radiation pattern. The potential of the presented antenna element was demonstrated by successful reconstruction of the images from the measured data by MWI methods. For this purpose, an MWI system equipped with eight antennas was implemented. The radar approach was used to determine the region of interest (ROI) where the area for microwave tomography reconstruction was identified. The dielectric properties within the ROI were reconstructed by using the Born approximation method at 1 GHz. This confirmed that the antenna can be used as the basis for more accurate multifrequency MWI systems and can be implemented in UWB MWI hybrid systems.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20601 - Medical engineering

Projekt

<a href="/cs/project/GA21-00579S" target="_blank" >GA21-00579S: Multifyzikální studie superpozice elektromagnetických vln v modelu lidské hlavy pro ověření proveditelnosti mikrovlnné hypertermie nádorů mozku</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

IEEE Transactions on Antennas and Propagation

ISSN

0018-926X

e-ISSN

1558-2221

Svazek periodika

70

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

5357-5372

Kód UT WoS článku

000833777700001

EID výsledku v databázi Scopus

2-s2.0-85127489071