samiraaa wrote on Apr 11th, 2009, 5:54pm:That will be great if one tells me how I should set the QPss and PAC simulations in spectra.
You mean Cadence Spectr
e not Spectr
a ?
If so, PAC is not slave analysis for QPSS.
Master analysis of PAC is PSS. Slave analysis of QPSS is QPAC not PAC.
See
http://www.designers-guide.org/Forum/YaBB.pl?num=1227668750You can do simulation without using autonomous QPSS although it is a simple evaluation and lacking in accuracy.
Capture one-period waveform VCO alone or VCO with Mixer as Load using PSS.
Use "analogLib/vpwlf" or "analogLib/ppwlf" with frequency scaling in QPSS analysis for IP3 evaluation.
Here you can do IP3 evaluation using conventional two-tones-QPSS with QPAC.
RF1 and LO are treated as large signal in QPSS.
RF2 is treated as small signal in QPAC.
Also see
http://www.designers-guide.org/Forum/YaBB.pl?num=1238150066The followings are general notes.
- Use correct terminologies.
- Warnigns are different from Errors.
- ADS is not name of simulator.
- There is no tool which name is Cadence.
- All gains in Direct Plot of Cadence ADE are "right", "true" and "practical" voltage gain.
- MATLAB are different from Simulink.
- Learn measurements using actual instruments. Not "EDA Tool Play".