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Subject: Re: log-antilog multiplier

Date: 01/07/03 at 5:25 AM
Posted by: xwindy
E-mail: min.xu@ic.ac.uk
Message Posted:

In Reply to: Re: log-antilog multiplier posted by Russ Kincaid on 01/06/03 at 9:24 PM:

But I got this from the fuction:

sin(wt)* sin(wt+phi) = 0.5* (cos(2wt+phi)+cos(phi))
then the LPF can filter the high freq singal and the output is cos(phi), which is DC signal. Is this practable?
The freq of the two signal is about 10K-20KHz

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