Impulse response magnetic resonance spectrometer

Details Impulse response magnetic resonance spectrometer Impulse response magnetic resonance spectrometer

1975-01-31

1976-08-17

Rolinec, R. V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 5R, G01R 3308

Patent

active

039756750

ABSTRACT:
The circuit for providing the high-frequency short signals which excite the specimen comprises a low-frequency oscillator linearly frequency-modulated during the course of time intervals of duration T.sub.o which are much shorter than their recurrence periodicity T.sub.r ; the output signal from the low frequency oscillator is frequency translated in a single side-band modulator supplied with a high-frequency wave by a high- frequency generator. An amplitude modulator makes it possible, in the course of the time intervals of duration T.sub.o, to create gaps in the output signal from the single side band modulator or, instead, to increase the amplitude of said signal during part of the frequency sweep. It furthermore suppresses the signal outside said time intervals of duration T.sub.o.

REFERENCES:
patent: 3461381 (1969-08-01), Nelson et al.
patent: 3566256 (1971-02-01), LeRoy
patent: 3568047 (1971-03-01), Look
patent: 3699428 (1972-10-01), Leane
patent: 3714550 (1973-01-01), Hyde

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