The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2013
Filed:
Apr. 10, 2008
Olivier Romain, Montgeron, FR;
Bruce Denby, Paris, FR;
Julien Denoulet, Noisy-le-Grand, FR;
Universite Pierre et Marie Curie (Paris VI), Paris, FR;
Abstract
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.