Re: DAC requirement for carrier generation

Steve Underwood <steveu@xxxxxxx> wrote:

>Steve Pope wrote:

>>The real question is, could you get by at Fs/3 for the center
>>frequency? Or must it be lower still?

>I'm not sure it even makes theoretical sense, considering the sinc
>rolloff that close to the end of the band (or do theoretician's DACs
>output dirac pulses :-) ).

The sinc rolloff is only 3 dB at Fs/2 so it's not a deal-killer.

>Fs/3 can be workable, but a lot depends on the spur performance of the
>DAC, and a hundred other messy details.

Yep.

S.
.