Multi-tuned single coil transmission line probe for nuclear magnetic resonance spectrometer
OwnerJacob Schaefer, Robert A. McKayinventors
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Abstract
A probe for a nuclear magnetic resonance spectrometer having improved sensitivity and efficiency is described, comprising an impedance matched and tuned coaxial transmission network, multiple radio frequency input-output connections, and a single sample coil. Each individual radio frequency input-output connector and its associated capacitive impedance matching and tuning circuitry is remotely disposed from the magnetic field of the spectrometer. Additional radio frequency input-output connectors of lower frequencies may be modularly added and removed from the probe without altering the impedance settings of high frequency connectors already present.
Claims20
A multi-tuned single coil transmission line probe for a nuclear magnetic resonance (NMR) spectrometer having a uniform magnetic field, said probe comprising:
- a coaxial transmission line network, the network including an outer electrical conductor and a coaxial inner electrical conductor;
- a radio frequency sample coil electrically coupled to said coaxial transmission line network;
- and
- a plurality of radio frequency input-output connectors, each of said input-output connectors adapted to a unique radio frequency and electrically coupled to said coaxial transmission line network by capacitive tuning circuits at a frequency-matched minimum impedance point.
Dependencies are inferred from the claim text.