Decoupling of Two Closely Located Dipoles by a Single Passive Scatterer for Ultra-High Field MRI
| Autor: | Constantin Simovski, Sergei Kurdjumov, Anna Hurshkainen, Masoud Sharifian Mazraeh Mollaei |
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| Přispěvatelé: | Kostantin Simovski Group, St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO), Department of Electronics and Nanoengineering, Aalto-yliopisto, Aalto University |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Field (physics)
FOS: Physical sciences 02 engineering and technology Imaging phantom law.invention Resonator Optics law 0202 electrical engineering electronic engineering information engineering Physics - Biological Physics Dipole antenna Electrical and Electronic Engineering Physics Radiation ta213 business.industry Scattering 020206 networking & telecommunications 021001 nanoscience & nanotechnology Condensed Matter Physics Physics - Medical Physics ARRAYS Dipole Wavelength Biological Physics (physics.bio-ph) Medical Physics (physics.med-ph) 0210 nano-technology business Decoupling (electronics) |
| Zdroj: | Progress In Electromagnetics Research |
| Popis: | openaire: EC/H2020/736937/EU//M-CUBE 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. |
| Databáze: | OpenAIRE |
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