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From: "Michael A. Terrell"
Subject: Re: Undersampling and its complement?
Date: Fri, 01 Nov 2002 20:12:44 -0500
Organization: Have you seen my bench? No, really! Where is it?
X-Mailer: Mozilla 4.61 [en]C-CCK-MCD (Win95; U)
James Meyer wrote:
> I have to extract information from an 8 MHz signal. Nyquist says that
> 16 MHz should be my minimum sampling frequency. However... if the bandwidth of
> the signal I'm interested in is something like 10 KHz centered around 8 MHz,
> then I really only need to sample at 2 times 10 KHz, let the signal be "folded"
> or aliased down to 0 to 10 KHz and I wil not have lost any information. That's
> My question is.... is there anything similar regarding generating an 8
> MHz signal? Do I really need a 16 MHz or better DAC in order to generate 8 MHz
> signals if the signal will not have a very wide bandwidth?
Enter dds in the search box and have fun.
Michael A. Terrell
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