unevb wrote on Apr 28^th, 2010, 7:39pm:
Simply do S-parameter analysis.

MAG(Maximum Available Power Gain), MSG(Maximum Stable Power Gain) and U(Mason's Unilateral Power Gain) are calculated from S-parameters.

For example, MAG and MSG are calculated by using the following function in Agilent Post Processing Environment.
http://edocs.soco.agilent.com/display/ads2009/max+gain%28%29

"fmax" is a frequency at 0dB for "MAG" or "U".

I use Agilent ADS with optimizer for this purpose.
All source codes of original prepared functions exist in "$HPEESOF_DIR/expressions/ael".
So we can see definitions of functions easily and create my custom function easily by modifying them which are commonly usable in ADS native, RFDE and GoldenGate.


"Gumx" of Cadence Direct Plot form is "Maximum Unilateral Transduder Gain" not U(Mason's Unilateral Power Gain) .
So I think "Gumx" should be renamed to "GTU_max".

http://www.edaboard.com/viewtopic.php?t=377255

If you will use Cadence Spectre, you should confirm validity of Cadence OCEAN function's definitions.
http://www.designers-guide.org/Forum/YaBB.pl?num=1266403928/11#11  

unevb wrote on Apr 29^th, 2010, 11:48am:
No.

For example, see equation for U by Y-parameter.
Small signal Y-parameter are not dependent on reference impedances.

unevb wrote on Apr 29^th, 2010, 11:48am:
Read RF theory text book for very beginner.