High frequency antenna for a nuclear magnetic resonance measurin

Details High frequency antenna for a nuclear magnetic resonance measurin High frequency antenna for a nuclear magnetic resonance measurin

1986-06-04

1988-04-05

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324313, G01R 3320

Patent

active

047361611

ABSTRACT:
A high frequency antenna is provided for an apparatus measuring nuclear magnetic resonance, of the type whose radiating means comprise conductors forming high frequency resonators with a metal casing. They are frequency tuned by adjustment capacitors situated at their ends. For simplifying the frequency tuning of two paired resonators through which flow currents in phase opposition, it is proposed to join together galvanically two ends of these two resonators by a high frequency line section whose length is substantially equal to half the wave length of the energization wave to be emitted. The frequency matching of the antenna may be made by adjusting simultaneously all the adjustment capacitors by means of a common control knob. Coupling of the energization energy is provided magnetically in the middle of this high frequency line section.

REFERENCES:
patent: 4536714 (1985-08-01), Clark
patent: 4620155 (1986-10-01), Edelstein
patent: 4652824 (1987-03-01), Oppelt

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