Decoupling of Two Closely Located Dipoles by a Single Passive Scatterer for Ultra-High Field MRI

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Decoupling of Two Closely Located Dipoles by a Single Passive Scatterer for Ultra-High Field MRI. / Mollaei, Masoud S. M.; Kurdjumov, Sergei A.; Hurshkainen, Anna A.; Simovski, Constantin R.

In: PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER, Vol. 164, 2019, p. 155-166.

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@article{37efb999367e480785b0705d8cc1ad91,
title = "Decoupling of Two Closely Located Dipoles by a Single Passive Scatterer for Ultra-High Field MRI",
abstract = "We report decoupling of two closely located resonant dipole antennas dedicated for ultra-high field magnetic resonance imaging (MRI). We show that a scatterer slightly raised over the plane of antennas grants a sufficient decoupling even for antennas separated by very small gap (below 1/30 of the wavelength). We compare the operations of two decoupling scatterers. One of them is a shortcut resonant dipole, and the other is a split-loop resonator (SLR). Previously, we have shown that the SLR offers a wider operational band than the dipole and the same level of decoupling. However, it was so for an array in free space. The presence of the body phantom drastically changes the decoupling conditions. Moreover, the requirement to minimize the parasitic scattering from the decoupling element into the body makes the decoupling dipole much more advantageous than the SLR.",
keywords = "ARRAYS",
author = "Mollaei, {Masoud S. M.} and Kurdjumov, {Sergei A.} and Hurshkainen, {Anna A.} and Simovski, {Constantin R.}",
note = "| openaire: EC/H2020/736937/EU//M-CUBE",
year = "2019",
doi = "10.2528/PIER18101703",
language = "English",
volume = "164",
pages = "155--166",
journal = "PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER",
issn = "1070-4698",
publisher = "EMW Publishing",

}

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TY - JOUR

T1 - Decoupling of Two Closely Located Dipoles by a Single Passive Scatterer for Ultra-High Field MRI

AU - Mollaei, Masoud S. M.

AU - Kurdjumov, Sergei A.

AU - Hurshkainen, Anna A.

AU - Simovski, Constantin R.

N1 - | openaire: EC/H2020/736937/EU//M-CUBE

PY - 2019

Y1 - 2019

N2 - We report decoupling of two closely located resonant dipole antennas dedicated for ultra-high field magnetic resonance imaging (MRI). We show that a scatterer slightly raised over the plane of antennas grants a sufficient decoupling even for antennas separated by very small gap (below 1/30 of the wavelength). We compare the operations of two decoupling scatterers. One of them is a shortcut resonant dipole, and the other is a split-loop resonator (SLR). Previously, we have shown that the SLR offers a wider operational band than the dipole and the same level of decoupling. However, it was so for an array in free space. The presence of the body phantom drastically changes the decoupling conditions. Moreover, the requirement to minimize the parasitic scattering from the decoupling element into the body makes the decoupling dipole much more advantageous than the SLR.

AB - We report decoupling of two closely located resonant dipole antennas dedicated for ultra-high field magnetic resonance imaging (MRI). We show that a scatterer slightly raised over the plane of antennas grants a sufficient decoupling even for antennas separated by very small gap (below 1/30 of the wavelength). We compare the operations of two decoupling scatterers. One of them is a shortcut resonant dipole, and the other is a split-loop resonator (SLR). Previously, we have shown that the SLR offers a wider operational band than the dipole and the same level of decoupling. However, it was so for an array in free space. The presence of the body phantom drastically changes the decoupling conditions. Moreover, the requirement to minimize the parasitic scattering from the decoupling element into the body makes the decoupling dipole much more advantageous than the SLR.

KW - ARRAYS

U2 - 10.2528/PIER18101703

DO - 10.2528/PIER18101703

M3 - Article

VL - 164

SP - 155

EP - 166

JO - PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER

JF - PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER

SN - 1070-4698

ER -

ID: 34162659