Patent ID: 8581663
Filing Date: 2013-11-12
Classification: H03F

Abstract:
1. A system for multi-distributed amplification of a communication signal, the system comprising: at least one plurality N of input pathways i connected to an input Butler matrix which delivers as output N distributed signals; a plurality N of amplifiers which receive as input said distributed signals and produce as output N amplified and phase-shifted signals each of a complex gain G an output Butler matrix which receives as input said amplified signals and produces as output N output signals; a generator of a reference signal of known amplitude e and of known phase, said reference signal being provided on one of said input pathways of said system, said reference signal being transmitted simultaneously with said communication signal to be amplified; a device for measuring the errors S of amplitude and of phase of each of said output signals of said system, said device being suitable for performing a coherent demodulation of the amplified signal so as to extract said reference signal from said communication signal and to estimate said amplitude error and phase error impacting the reference signal; a signal processing device receiving as input said measurements S of the amplitude error and phase error, and producing, on the basis of said measurements S, for each pathway i of said system, an amplitude compensation a′ a phase/amplitude compensation device, inserted between said input Butler matrix and the plurality of amplifiers and suitable for correcting each of the pathways i of said system on the basis of the received values of amplitude compensation a′