Radio frequency resonator system with optimized current distribution in the conducting elements
US7078902B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2005 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Mar 31, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/34092
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radio-frequency (RF) resonator system, in particular, for an NMR (nuclear magnetic resonance) probe head, with at least one RF resonator which comprises at least three non-interrupted conducting elements (21; 54, 56, 58; 75, 76; 91–94; 111a–111d; 131, 132a–132b; 169a–169f) which form at least one window (57; 77a; 124, 124a) in the RF resonator, wherein only part of the conducting elements delimits the at least one window, wherein the conducting elements are coupled through electromagnetic fields, wherein each conducting element has a limiting current density, is characterized in that the eigen-resonances of the individual conducting elements and/or the electromagnetic coupling between the conducting elements is/are selected such that upon excitation of the RF resonator system, the maxima of the quotient values along the individual conducting elements are substantially equal for all conducting elements, wherein these quotient values are defined as a quotient between an average current density which occurs in a cross-section of the conducting elements and the respective local limiting current density, or in that peak-shaped current excesses (143a–143f) which may occur mainly in the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.