Realf wrote on Aug 5th, 2008, 5:36am:I'm designing a VCO ( 6GHZ) with an Automatic Loop Gain.
What do you mean by "Automatic Loop Gain" ?
Do you mean ALC, Automatic Level Control ?
So correctly, you mean "VCO(6GHz) with ALC" ?
Realf wrote on Aug 5th, 2008, 5:36am:I hoped to get Gain and Phase by means PSTB + PSS , but I got very strange results.
What is strange ? Explain in detail with result's graph.
Show me your netlist regarding signal(power) sources and PSS/PSTB statement.
Realf wrote on Aug 5th, 2008, 5:36am:Is it possible to use PSTB+PSS analysis when there is a conversion frequency ( ALC--> High freq to Low freq)?
What do you mean by "ALC--> High freq to Low freq" ?
Also What do you mean by "a conversion frequency" ?
Any mixer or frequency divider is included in your circuit ?
Do you intend to express PLL not ALC ?
If so, is there any fixed frequency source for reference ?
Realf wrote on Aug 5th, 2008, 5:36am:I want to highlight that from transient, PSS and Golden Gate Monte Carlo(1000 runs) analysis would seem ALC worked well.
Although we can't do small signal analysis in Agilent GoldenGate autonomous HB analysis, we can do small signal analysis in Agilent RFDE(ADS) autonomous HB analysis. So you can evaluate loop gain using RFDE(ADS).