BROADBAND MULTI-CHANNEL RADIOFREQUENCY RECEIVER

摘要

The invention relates to a device for receiving a broadband multi-channel radiofrequency signal, consisting of a radiofrequency analog input stage (3) connected to an intermediate-frequency conversion stage (d), said conversion stage comprising at least one conversion chain (13, 15) comprising a frequency mixer (17, 19) that transposes the signal to an intermediate frequency connected to the input of an analog-digital converter (29, 31) with a high frequency sampling rate, characterized in that the intermediate and sampling frequencies in each conversion chain are selected such that, considering the noise generated by the sampling overtones of the corresponding analog-digital converter, each of the radiofrequency signal channels has a signal/noise ratio that is greater at output than a predetermined value of at least one conversion chain.