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Simulators >> RF Simulators >> LNA Gain Measurement:No Convergence problem
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Message started by ravigupta on Jun 22^nd, 2003, 9:51pm

Title: LNA Gain Measurement:No Convergence problem
Post by ravigupta on Jun 22^nd, 2003, 9:51pm

Hi ..
I have been trying to plot the voltage gain of the LNA , but I get an error:
"Convergence difficulties resulted in error requirements being unsatisfied"
and so the simulation goes on indefinitely.
From the cadence documentation I found that this might occur if there are multiple periodic stimuli and their stimulus frequencies are not co periodic (and multiple of PSS analysis period).But I just have one voltage source in my circuit.(the circuit is the same as page 289 of "The Design of Cmos RF Integrated circuits"by Thomas Lee").
Can anyone suggest what might be the cause of no convergence ?
Also,a very fundamental question , does the PSS analysis period correspond to the fundamental frequency of the source we use ?
Thanx,
Ravi

Title: Re: LNA Gain Measurement:No Convergence problem
Post by Forum Administrator on Jun 24^th, 2003, 1:32am

This same post was made in the "RF measurements" board.

Please do not post duplicate messages to multiple boards on the forum.