What is an appropriate antialiasing filter for a sampling sy

What is an appropriate anti-aliasing filter for a sampling system with T 0.1 s? The Nyquist frequency for this system is 1/2T 5Hz and that should be the maximum cuto frequency of the anti-aliasing filter.

Solution

an antialiasing filter used before a signal sampler to restrict bandwidth of a signal to approximately or completely satisfying the sampling theorem over the band of interest.since the theorem states that unambiguous reconstruction of signal from its samples is possible when the power of frequencies above the nyquist frequency is zero.

a practical antialiasing filter will typically permit some aliasing to occur or else attenuate some in the band frequencies close to the nyquist limit so nyquist frequency for this system can be given as 1/2T=1/2*0.1=5HZ AND THAT SHOULD BE THE MAXIMUM CUTOFF FREQUENCY OF THE ANTIALIASING FILTER