OPENCORE NMR: open-source core modules for implementing an integrated FPGA-based NMR spectrometer.

Area of Science:

• Nuclear Magnetic Resonance (NMR) Spectroscopy
• Digital Signal Processing
• Embedded Systems Engineering

Background:

• Sophisticated commercial NMR spectrometers can be prohibitively expensive and inflexible for certain research needs.
• Developing custom NMR hardware often requires significant expertise and resources, limiting accessibility.

Purpose of the Study:

• To provide an open-source toolkit for building a functional FPGA-based NMR spectrometer.
• To empower researchers to reproduce, modify, and innovate NMR hardware for specific experimental requirements.

Main Methods:

• Development of an integrated FPGA-based system comprising digital modules for pulse programming, DDS, demodulation, filtering, and PC interfacing.
• Implementation of core modules in VHDL with publicly available source code.
• Integration of FPGA with peripheral boards for communication, RF transmission, and signal acquisition.

Main Results:

• Successful implementation and public release of the OPENCORE NMR spectrometer toolkit.
• Availability of VHDL source code for all FPGA digital modules.
• Demonstration of a reproducible and modifiable FPGA-based NMR spectrometer design.

Conclusions:

• The OPENCORE NMR spectrometer toolkit significantly lowers the barrier to entry for constructing custom NMR hardware.
• This open-source approach facilitates the development of novel NMR experiments and complements existing commercial systems.