Low loss wide band front end for NMR receiver

Details Low loss wide band front end for NMR receiver Low loss wide band front end for NMR receiver

1981-12-11

1984-05-22

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324322, G01R 3308

Patent

active

044504080

ABSTRACT:
An inductive element of a multipole impedance transforming bandpass network of classical design such as Butterworth or Chebyshev, for example, is employed as a pick-up coil for sensing NMR signals. The network matches the high input impedance of an NMR receiver preamplifier to the low impedance of the pick-up coil. Simultaneously, and as a consequence of the impedance matching, the high preamplifier input impedance appears as a band width broadening element at the pick-up coil. By virtue of the multipole design of transformer, a bandwidth broader than the natural bandwidth of the pick-up coil is obtained and the transfer of the energy of the detected NMR signal to the preamplifier is maximized.

REFERENCES:
patent: 3858112 (1974-12-01), Satoh et al.
patent: 4075552 (1978-01-01), Traficante et al.
patent: 4129822 (1978-12-01), Traficante

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