Использование программно-определяемого радио для структурного анализа энергоемких веществ с помощью ядерного магнитного резонанса

Abstract

This article discusses the creation of a system using software-defined radio for the study of energy-intensive substances using nuclear magnetic resonance. Software-defined radio (SDR) uses technology that allows to configure or change the parameters of radio frequency operation through software, such as frequency range, modulation type and output power. The article presents the structure of the system and provides a detailed analysis of several key components. The proposed approach involves the use of a SDR transmitter-receiver, which is a universal device capable of both transmitting and receiving signals. The article describes the stages of signal processing and suggests potential directions for the development of the system in the future. By using the SDR architecture and software interface, the system achieves a close location between sampling, digital-to-analog and analog-to-digital conversions, minimizing noise and distortion created by the analog part of the spectrometer. The SDR allows the use of quadrature modulation and demodulation, digital filtering and amplification, as well as software adjustment of filter characteristics. The article highlights the problems associated with the development of such NMR systems. The advantages of the system include enhanced capabilities for the development of new spectroscopic methods, compact dimensions for easy portability and cost-effectiveness compared to commercial spectrometers.