Decoupling multiple-coil NMR probes
US4739271A · kind A · utility
19Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1985 |
| Grant date | Apr 19, 1988 |
| Priority date | — |
| Expiry date | Jul 19, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/341
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A circuit arrangement is described for preventing a reaction of a coil on an external high-frequency field of predetermined frequency containing the coil due to a current induced by the field in the coil for a multiple-coil probe of a nuclear magnetic resonance apparatus wherein the coil is coupled via a high-frequency line of predetermined characteristic impedance to a switching element and a circuit unit cooperating with the coil. The electrical length of the high-frequency line between the coil and the switching element is so dimensioned that any undesired reaction of an inactive coil on the other coil(s) is eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.