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    • 2. 发明申请
    • HIGH-FREQUENCY RECEIVER WITH MULTIPLE-CHANNEL DIGITAL PROCESSING
    • 具有多通道数字处理的高频接收器
    • WO2008142278A2
    • 2008-11-27
    • PCT/FR2008000499
    • 2008-04-10
    • UNIV PARIS CURIEROMAIN OLIVIERDENBY BRUCEDENOULET JULIEN
    • ROMAIN OLIVIERDENBY BRUCEDENOULET JULIEN
    • H04B1/26
    • G01S13/003G01S7/352G01S2007/356G01S2007/358H03H17/0685H03H2017/0214H03H2218/06
    • In the receive subsystem, the analogue-digital converter (40) works on the output of the low-noise amplifier (33), at a chosen rate (F), which corresponds to a bandwidth sampling. The processing stages comprise a custom circuit (5), with * an input memory (510) arranged to contain N successive digital samples, renewed at the chosen rate in blocks of M samples, * a complex digital low-pass filtering function (511, 512), of chosen cut-off frequency, operating on the input memory to supply N filtered digital samples (515), * an M-periodic summing function (531) on the N filtered digital samples, supplying M filtered and summed digital samples (533), * an M ´ M discrete Fourier transform stage (55), operating on these M filtered and summed digital samples, the digital signals on the M outputs (559) of the Fourier transform representing M separate channels, of width defined by the cut-off frequency of the abovementioned low-pass filter.
    • 在接收子系统中,模数转换器(40)以选择的速率(F)在低噪声放大器(33)的输出上工作,对应于带宽采样。 处理阶段包括定制电路(5),其中输入存储器(510)被布置成包含N个连续的数字样本,以选定的速率以M个样本的块更新;复数数字低通滤波函数(511, 512),在输入存储器上工作以提供N个滤波的数字样本(515),* N个滤波的数字样本上的M周期求和函数(531),提供M个滤波和求和的数字样本( 533),* M'M离散付里叶变换级(55),对这些M个滤波和求和的数字样本进行操作,表示M个分离信道的傅里叶变换的M个输出(559)上的数字信号,宽度由 上述低通滤波器的截止频率。