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bandwidth before and after AD9957

Question asked by swong on Sep 27, 2010
Latest reply on Sep 27, 2010 by swong

i'm  using AD9957 to upconvert the DAB baseband signal .the DAB baseband signal is of 1.536M hz in bandwidth(using 2048 carriers to carry info including 512 zero carriers in baseband)。and the interleaved I/Q data sample rate  is 4.096MPS(which means 2.048 M for separately I and Q data)  the PDCLK is 4.096M to capture a pair of I and Q data.  the output locates at the programmed center frequence but with a bandwidth of 2.048M.

In this case,the receiver can't decode the received data.how can i make the bandwidth limited to 1.536M?

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