On Sun, 14 Mar 2004 16:48:53 -0800, "Tim Wescott"
wrote:

I doubt that there's any real advantage to feeding a nice clean sine wave to
your MOSFET mixer -- the best distortion performance that you'll get out of
the mixer will be if you're driving it hard (i.e. turning it on and off).
Even with sine waves in you'd get lots of harmonics internally in the mixer.

By the way, why not use an off-the-shelf mixer like the NE602? I doubt that
you'd get much better performance out of a single MOSFET unless you're a
real RF circuits whiz, and the NE602 is quite easy to apply.

agreed, I'd concentrate on the loop filter section, if he's even using one.








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