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Gain and phase margin (Read 2744 times)

raja.cedt Senior Fellow Offline Posts: 1516 Germany	Re: Gain and phase margin Reply #15 - Jan 23^rd, 2012, 5:46am hello, you don't even have 57 Phase Margin, In-fact here Phase margin won't give good picture due to lack of monotonicity ALWAYS USE MONOTONIC BODE PLOT. OTHERWISE GO FOR NYQUiST. Thanks, raj.
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buddypoor Community Fellow Offline Posts: 529 Bremen, Germany	Re: Gain and phase margin Reply #16 - Jan 23^rd, 2012, 6:34am sapna wrote on Jan 23^rd, 2012, 4:48am: this is the gain and phase plot i am looking at According to your gain/phase plot the phase margin is only approx. 20 deg. and the gain margin is approx. 25 dB
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SoliS Junior Member Offline Posts: 14	Re: Gain and phase margin Reply #17 - Feb 2^nd, 2012, 7:19am Your gain drops to 0 dB at about 5x10^6 Hz. If we look at the same frequency on the phase plot, we see that the phase is about 20 degrees there. Thus, your phase margin is 20 degrees.
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