METHOD FOR EXPANDING DYNAMIC RANGE OF RECEIVER Russian patent published in 2023 - IPC H04B1/10 

FIELD: radio engineering.

SUBSTANCE: used to reduce noise and systematic interference when recording a target signal against a background of periodic interference that exceeds it. It is achieved by the fact that in the method for recording a periodic signal, including amplification of the input signal and analog-to-digital conversion of the amplified signal, the signal digitized on the interference period is stored once, the stored signal is converted into an analog form periodically and in phase with synchronous interference, and the difference signal between input signal and the signal converted to analog form, and this difference is amplified and subjected to analog-to-digital conversion. The resulting difference has a smaller amplitude compared to the input signal, so the gain is set higher than the original one.

EFFECT: creation of a method that will allow, in the presence of powerful periodic interference, to amplify the input signal so that the weak recorded signal occupies most of the ADC digitization range.

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