Circuit for the excitation and recovery of the signal emitted by a probe in an NMR spectrometric apparatus
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United States of America Patent
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Apr 22, 2003
Grant Date -
Sep 5, 2002
app pub date -
Jan 24, 2002
filing date -
Jan 24, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
An excitation circuit of a probe for measuring and recovering the signal emitted in return by this latter in an NMR spectrometric apparatus, connecting the probe under conditions defined by switching elements forming a portion of the circuit, to a high frequency excitation signal generator by a portion of the line or emission line, and by a portion of the line or reception line, to a receiver for acquiring and using signals emitted by the probe as a function of the specimen to be analyzed which it contains, a device being provided to carry out or verify the tuning of the measuring probe with the excitation signal generator, associated with the circuit. The device includes a directive coupler, mounted to the portion of the emission line.
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