See
http://www.designers-guide.org/Forum/YaBB.pl?num=1237890768/10#10vp1953 wrote on Aug 27th, 2010, 4:20pm:Does increasing the number of harmonics (substantially) make any difference?
I usually use 31 as Harmonics in HB.
I also tried 101 Harmonics in HB. But convegence can't be improved or succeeded.
Harmonics of 31 is generally enough for master large signal analysis, although it can not be enough for slave small signal analysis.
I think ill-convergence is due to a deadzone of Hysteresis Buffer.
There could be an oscillative behavior if an input signal is small around a deadzone.
pancho_hideboo wrote on Aug 25th, 2010, 9:10am:When target circuit include Hysteresis Buffer such as Schmitt Trigger Buffer,
it is very difficult to get convergence of periodical steady state analysis based on HB or Shooting-Newton approaches.
Again see start descriptions of this thread.
I tried following engines.
- HB with Frequecy Domain Preconditioner in Agilent GoldenGate
- HB with Time Domain Preconditioner in Agilent GoldenGate
- TB(Time-Balance) in Agilent GoldenGate
- TS(Time-Shooting) in Agilent GoldenGate
- TB Assisted HB in Agilent GoldenGate
- TS Assisted HB in Agilent GoldenGate
- Transient Assisted HB with Frequecy Domain Preconditioner in Agilent GoldenGate
- Transient Assisted HB with Time Domain Preconditioner in Agilent GoldenGate
- PSS based on HB in Cadence Spectre
- PSS based on Shooting-Newton in Cadence Spectre