Theoretical performance of a metamaterial-inspired antenna for MRI
| Autor: | Alfredo O. Rodriguez, O. Marrufo, Rodrigo Martin, S. E. Solis-Najera, F. Vazquez |
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| Rok vydání: | 2018 |
| Předmět: |
Permittivity
Physics Acoustics Physics::Optics Metamaterial 020206 networking & telecommunications 02 engineering and technology 021001 nanoscience & nanotechnology Resonator Electric power transmission Transmission line Q factor 0202 electrical engineering electronic engineering information engineering Radio frequency 0210 nano-technology Radiofrequency coil |
| Zdroj: | 2018 International Conference on Electromagnetics in Advanced Applications (ICEAA). |
| DOI: | 10.1109/iceaa.2018.8520363 |
| Popis: | Metamaterial-inspired anttenas offer the possibility to improve the RF coil performance to acquire magnetic resonance images at high field. Transmission line (TL) theory used to study composite right/left hand structures, together with Mansfield’s formalism for the high frequency cavity resonator, were used to derive and expression for the quality factor, Q of a metamaterial-inspired cyclic antenna. A simple analytical formula was computed as a function of the number of resonator and the permittivity and permeability. These results offer theoretical guidelines to develop metamaterial-inspired antennas with an specific performance. The experimental evidence will determine the validity of this theory. |
| Databáze: | OpenAIRE |
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