论文信息 - Low-dissipation tunable rf preamplifier for low temperature NMR applications.

Low-dissipation tunable rf preamplifier for low temperature NMR applications.

We describe a simple circuit which can be used as an impedance matching device to improve the S/N ratio when lossy cables must be used in low-temperature NMR experiments. The total dissipation is less than 2 mW and the circuit operates satisfactorily down to 1.5 K. The only tuned circuit is the nuclear resonance circuit which incorporates GaAs (P) diodes which can be tuned remotely.

N. Sullivan | H. R. Wampach

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