Re: IQ demodulator PFD

In message <wTGJg.1689$7D6.878@xxxxxxxxxxxxxxxxxxxx>, dated Thu, 31 Aug 2006, colin <no.spam.for.me@xxxxxxxxxxxx> writes
However what I realy want to do is to tell if the RF is higher or lower than
LO+IF(455khz)
and have an instantaneous phase difference.
I assume if I mix each of the above IQ signals with IF in a IQ modulator
this will let me acomplish this,
is there an easy way to implement this ?

If I've understood you correctly, I don't think there is even a difficult way of doing it. You want to generate a 2.200455 GHz signal by one stage of mixing? Even with quadrature mixing, I think it's pretty ambitious.
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