Université Pierre Et Marie Curie (Paris Vi)

Centre National De La Recherche Scientifique

Université Pierre Et Marie Curie

Bruce Denby

Olivier Romain

Rémi DuBois

Julien Denoulet

Pierre Roussel

Thomas Hueber

Gérald Dreyfus

In the receive subsystem, the analogue-to-digital converter () works on the output of the low-noise amplifier (), at a chosen rate (F), which corresponds to a bandwidth sampling. The processing stages comprise a custom circuit (), with * an input memory () arranged to contain N successive digital samples, renewed at the chosen rate in blocks of M samples, * a complex digital low-pass filtering function (), of chosen cut-off frequency, operating on the input memory to supply N filtered digital samples (), * an M-periodic summing function () on the N filtered digital samples, supplying M filtered and summed digital samples (), * an M'M discrete Fourier transform stage (), operating on these M filtered and summed digital samples, the digital signals on the M outputs () of the Fourier transform representing M separate channels, of width defined by the cut-off frequency of the abovementioned low-pass filter.

High-frequency receiver with multiple-channel digital processing

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Paris, France

Bruce Denby