Mutual inductance NMR RF coil matching device

Details Mutual inductance NMR RF coil matching device Mutual inductance NMR RF coil matching device

1984-10-29

1987-01-20

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324322, 324311, G01R 3320

Patent

active

046382534

ABSTRACT:
A matching device uses mutual inductance to couple an NMR radio frequency (RF) coil to an RF power amplifier and RF receiver preamplifier. The device includes a matching coil connected to the RF power amplifier and preamplifier and which is positioned between the NMR RF coil and a decoupling shield in a region where RF flux density, produced by the NMR RF coil, is maximum. This ensures effective coupling to the NMR RF coil and provides a way for adjusting the degree of coupling (hence, input impedance) by varying the area of the matching coil available for intercepting the RF flux.

REFERENCES:
patent: 4129822 (1978-12-01), Traficante
patent: 4320342 (1982-03-01), Heinzerling

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