Jess Chen
|
Hi Ken,
I briefly looked at your paper, the one Vikas cited, and it seems you use the terms in the context of periodically driven circuits, circuits with mixers? However, some authors define AM/PM,AM conversion in the context of power amplifiers to describe saturation(AM/AM) as well as a phase shift that that sometimes accompanies it (AM/PM). Both effects occur with only one periodic signal. I have not thought about it long enough but I suspect the two definitions are consistent if we drive the PA with the sum of a large tone at one frequency and a small tone at another. I've seen AM/PM conversion and AM/PM distortion refer to the same thing. The first reference listed below uses "conversion" while the second uses "distortion".
Peter Kennington, "High-Linearity RF Amplifier Design", Artech House. Steve Cripps, "RF Power Amplifiers for Wireless Communications". Artech House.
-Jess
|