公开(公告)号：US10295632B2

公开(公告)日：2019-05-21

申请号：US14805731

申请日：2015-07-22

Applicant: JEOL Ltd.

Inventor： Kenichi Hachitani ,  Takeshi Tsukada ,  Tetsuro Sugita ,  Takayuki Suzuki

IPC: G01R33/46 ,  G01R33/36

Abstract: In a magnetic resonance measurement apparatus such as an NMR measurement apparatus, when a frequency of an observation nucleus falls within a high frequency band, an RF reception signal is converted into an intermediate frequency signal, and is input to an analog-to-digital converter. In this case, under-sampling is executed for the intermediate frequency signal in the analog-to-digital converter, and a second-order aliased signal component generated from a target signal component is observed. On the other hand, when the frequency of the observation nucleus falls within a low frequency band, over-sampling for the RF reception signal is executed.