On Mon, 23 Feb 2004 16:12:55 -0700, Jim Thompson
wrote:

Look up 3rd order intercept point.

And pay special attention if this is input IP3 (the power of the test
tones are measured at the input of the device) or output IP3 (power
levels measured at device output).

This is especially important, since a typical active Gilbert cell
mixer (1496, NE602) have some gain, while a typical diode ring mixer
(SBL-1) have a 6-7 dB loss.

Paul OH3LWR