Analysis of NMR Spectrometer Receiver Noise Figure

Figure 5

Influence of the noise bandwidth on the measured receiver noise figure using (a) the broadband-1 preamplifier, (b) the broadband-2 preamplifier, (c) the tuned-1 preamplifier, and (d) the tuned-2 preamplifier. The noise bandwidth d is symmetrical to the operation frequency .

(a)

(b)

(c)

(d)