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I have a question about ADS smilation, can someone help me? - RF
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Below are the old forum threads, including responses to the original posts.
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Post subject: I have a question about ADS smilation, can
someone help me? Posted: Mon Aug 22, 2005 11:12 pm
Joined: Mon Aug 22, 2005 11:03 pm
When I do Transient
simulate using the ADS, it always said that the iternal timestep ***
to small at time ***, and I can't find the answer from the help files
of the ADS,can someone help me to solve this problem? Thanks a lot
Post subject: ADS SimulationPosted: Tue
Aug 23, 2005 7:32 pm
If I'm not mistaken, ADS' transient simulation
uses adaptive time steps - if a change of any variable is too big from
one instant to another, or if a circuit fails to converge (that is,
the voltages and currents can't be made to be consistent), then it shrinks
the time step and tries again.
Circuits with high Q can cause
problems with transient simulations - if you accidentally have a high-Q
resonance, that could be your problem. On the other hand, if you intentionally
have a high-Q resonance, then you'd best be prepared to do a lot of
Posted: Tue Aug 23, 2005 10:19 pm
Thanks for your reply.
circuit I use a delay unit to delay the signal, is it the problem?
If the Q value is too high, can I reduce it? Or other methods, can you
tell me how I to do?