DIGITAL APPARATUS FOR DETERMINING THE SPECTRUM OF RECEIVED SIGNALS WITH HIGH FREQUENCY RESOLUTION Russian patent published in 2021 - IPC G01R23/18 G06F17/14 

FIELD: radio equipment.

SUBSTANCE: digital apparatus for determining the spectrum of received signals with high frequency resolution is intended for operation in radio frequency systems for various purposes, as well as in radio measuring equipment. The result is provided by the fact that the apparatus is implemented on a PLD and comprises accumulation channels, wherein the amount of accumulation channels is determined by the required frequency resolution, and said channels do not contain ring buffers. The accumulation channels comprise a sign selection pattern for summing the received signal by the values of the address bits, wherein the readings of the received signal accounting for the sign are summed in accordance with the signs of the sines and cosines of the discrete Fourier transform.

EFFECT: obtained spectrum of the received signal with a large amount of readings in a time comparable to the time of receiving the signal without the need to maintain exact ratios between the components of the spectrum.

1 cl, 11 dwg