Epr spectrometer with a microwave source comprising a fixed frequency microwave oscillator and a tunable hf generator

Abstract

An electron paramagnetic resonance (EPR) spectrometer includes a sample resonator with a sample area for a measurement sample to be held in the sample resonator, a tunable microwave source for generating a tunable microwave signal to be applied to the sample resonator, a magnet system for generating a variable magnetic field to be applied at least to the sample area in the sample resonator, and a microwave detector connected to the sample resonator for detecting microwave radiation. The tunable microwave source comprises a fixed frequency microwave oscillator for generating a fixed frequency microwave signal, a tunable frequency generator for generating a tunable high frequency (HF) signal of lower frequency than the fixed frequency microwave signal, and a mixer for mixing the fixed frequency microwave signal and the tunable HF signal, thus generating a tunable microwave signal. A simple EPR spectrometer with high spectral resolution is thereby provided.

Dependencies are inferred from the claim text.