Method for the correction of linearity and linearity corrector for power amplifier

摘要

The invention relates to the correction of the linearity of the amplifiers puissance.une pre - distortion of the signal to be amplified (e) is carried out in a modulation circuit complementary (1), on the basis of coefficients contained in the tables of a memory circuit (3). A detection circuit (2) gives the address of the coefficients for the modulation, as a function of the modulation of the signal to be amplified; two transposers of frequency (4, 7) respectively receive the signals to be amplified (e) and amplified (s); a processor (5) examines the ratio between the transposed signals in order to modify, if necessary, the coefficients.application to the power amplifiers, especially in radiofrequency.