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Spectral synthesis method of correcting nonlinear elements for transmission paths

Keywords:

V.A. Makovij – Dr. Sc. (Eng.), Senior Research Scientist, Head of NTU, JSC «Concern «Sozvezdie» (Voronez). E-mail: makovij@mail.ru M.A. Evseev – Senior Designer, JSC «Concern «Sozvezdie» (Voronez). E-mail: z-e-u-s@mail.ru


The method of digital correction of non-linearity of transmission paths is considered. It is proposed to use two-tone test signal to describe the nonlinearity of the digital-to-analog path. A representation of the amplitude characteristics of digital-to-analog path as a weighted sum of the partial functions. Analytical expressions, establishing the combinations levels in the vicinity of the first harmonic and the weighting coefficients of the partial functions. Proposed implementation of the block for computing the values of the nonlinear element transfer function of the order with a limited order of non-linearity in the form of partial functions. For the particular case, an approximate solution of the fundamental equation of the digital correction.
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June 24, 2020
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