High-frequency receiver, particularly for a nuclear magnetic resonance apparatus

A high-frequency receiver comprising:

• an analog circuit supplied with an analog input signal and emitting an analog output signal;
• a mixer in said analog circuit acting on said analog input signal and operable with an injection frequency to produce said analog output signal;
• a digital circuit having a digital circuit input supplied with said analog output signal and containing an analog-to-digital converter for digitizing said analog output signal at a sampling rate prescribed by a sampling frequency;
• and
• a signal generator which generates a signal at said injection frequency, supplied to said mixer, and a signal at said sampling frequency, supplied to said analog-to-digital converter, only as a whole-number multiple of a basic frequency.