RF synthesizer or an NMR instrument

Details RF synthesizer or an NMR instrument RF synthesizer or an NMR instrument

1989-08-11

1990-08-28

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3320

Patent

active

049528777

ABSTRACT:
The transceiver of an NRM instrument includes a digital synthesizer that produces an analog carrier signal which can be controlled in both frequency and phase and which can be frequency and phase modulated. The analog carrier signal is mixed with reference signals to boost its frequency to the Larmor frequency of the instrument.

REFERENCES:
patent: 4659999 (1987-04-01), Motoyama et al.
patent: 4792914 (1988-12-01), Dartois
patent: 4879514 (1989-11-01), Mehlkopf et al.
Dye J. Jensen et al., "An Incremental Phase Shifter and Frequency Modulator for Magnetic Resonance Imaging and Spectroscopy", IEEE Transactions on Biomedical Engineering, vol. BME-34, No. 4, pp. 310, 311, 312, and 313, Apr., 1987.

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