Bill de Carle wrote:
Well, I did it a little differently, so maybe on a technicality
you could patent it :-)
Good, so you won't sue me ! :-)
Thanks for the details of your implementation. Just let me ask one
question. You multiply
the input real signal with a phasor rotating at the same nominal
frequency F of the signal
The output is a DC signal and a signal at +-2F (the sign depends on the
direction of rotation
of the phasor). At this point you need a lowpass filter, which you have
implemented
integrating the I & Q output. Wouldn't maybe a very steep FIR filter (>
255 taps) with
a bandwidth of a 2 or 3 Hz gain you something in terms of SNR ?
Mind, I am not saying this based on some computations, it's just a
feeling (which may, and
probably will) be wrong.
73 Alberto I2PHD
|
