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Designing of digital filter

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Pavan kumar CR

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Dear All,

I need to design a digital filter and i've only following specification

1) The signal bandwidth is 5 MHz
2) The input signal is sampled @ 7.86 MHz

Kindly suggest how to derive cutoff frequency to this filter.

Thanks and regards.
Pavan
 

Thanks for replying....
kindly explain in detail so that i can take necessary precaution before designing
 

According to Nyquist criterion, the maximum input signal frequency component and also characteristic filter frequency must be below fs/2, presuming a baseband design.
 
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