Automatic tuning apparatus and method for substance detection using nuclear quadrupole resonance and nuclear magnetic resonance
US5986455A · kind A · utility
47Cited by
10References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Sep 3, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/583
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for tuning a system for detecting a target substance through the use of nuclear quadrupole resonance (NQR) or nuclear magnetic resonance (NMR). The apparatus tunes an RF coil (34) which is employed to excite the substance under test. The tuning apparatus (36) includes a series of fixed value capacitors (93) switched in the tuning circuit by controllable switches (94). A programmable controller (21) is employed to control the switching and thereby the tuning of the coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.