RADIO RECEIVER WITH DIGITAL CORRECTION OF AFFECTED FREQUENCIES Russian patent published in 2018 - IPC H04B15/04 

FIELD: radio engineering, communication.

SUBSTANCE: radio receiver with digital correction of affected frequencies contains sequentially connected input circuits and a preselector, adder, analogue-to-digital converter, digital receive path and demodulator, the output of which is the information output of the device, and the input of the input circuits and the preselector is the input of the device; a blur signal shaper consisting of a series-connected sampler, a digital-to-analogue converter and a filter the output of which is connected to the corresponding input of the adder; a sampling rate source including a serially connected reference oscillator and a frequency synthesizer the output of which is connected to a corresponding input of an analogue-to-digital converter. The respective inputs of the secondary power supply, as well as the series-connected digital frequency correction unit and the second frequency synthesizer, the output of which is connected to the secondary power source, and the output of the tuning frequency of the digital receiver path is connected to the input of the digital frequency correction unit, wherein the digital correction unit calculates conversion frequency of the secondary power source according to the formula where f_rmc - central frequency of the receiving channel; f_c0 is the primary frequency of conversion of secondary power supplies (SPS) specified in the documentation for the SPS used; ⎣ ⎦ - the operand of taking the whole part of a fractional number, in addition, the output of the reference oscillator is connected to the second frequency synthesizer.

EFFECT: absence of affected frequencies of the radio receiving device, generated by parasitic emissions of pulsed secondary power supplies.

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