Applying undersampling to the nuclear magnetic resonance signal

Presents the use of undersampling in an NMR prototype equipment. The results show that undersampling is a convenient tool to be used in the processing of these signals. It allows one to easily transform bandpass free induction decay (FID) signals, centered at high frequencies, into lowpass signals or bandpass signals at much lower frequencies. The main advantages of using this technique are improved signal to noise ratio and analog electronic stages suppression.