AMPLIFICATION CIRCUIT WITH IMPROVED LINEARITY

摘要

The invention relates to an amplification circuit AC comprising a plurality of amplification branches (Di, Hi, ai, where i = 1 to N), each one of the branches having a gain proper that makes a contribution to the overall gain of the amplification circuit AC, the size of said contribution being determined by a control signal CNT. By virtue of the invention, the variation range of the overall gain of the amplification circuit is divided into as many zones as there are amplification branches in the circuit, and each branch may be designed such that the variation of its gain proper is quasi-linear in the part of the variation range for which said branch makes the largest contribution to the overall gain.Application: Amplification/attenuation inside receivers of radioelectric signals.