| 摘要 |
A multiple-tuned circuit and a probe for use in a nuclear magnetic resonance (NMR) spectrometer. The multiple-tuned circuit having improved power capacity, thus permitting injection of high electric power. The multiple-tuned circuit and probe improve the resonance frequencies at higher and lower frequencies. Instead of the prior art coaxial resonator that is an unbalanced circuit, a balanced resonator circuit is used. A tuning circuit and a matching circuit for a higher frequency is connected in an intermediate position in the balanced resonator circuit. A tuning capacitive element for a lower frequency is inserted between the balanced resonator circuit and a sample coil or in an intermediate position in the balanced resonator circuit.
|
