Study of a low pass filter model for a quadrature detector for NMR analyzer

A model of a low pass filter as a part of quadrature detector of NMR (nuclear magnetic resonance) signal is investigated. A comparison of existing types of low-pass filters from the point of view of their application in NMR analyzers is carried out, their characteristics are investigated, and parameters are calculated. A unit of the device is developed. Keywords industrial electronics, nuclear magnetic resonance (NMR), low pass filter (LPF), quadrature detector, signal, cutoff frequency, bandwidth, free induction decay (FID)