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Author: WikiMatrix
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English[en]
If we know f180 for the amplifier at hand, the gain margin can be found approximately, but f180 then depends on the third and higher pole positions, as does the gain margin, unlike the estimate of phase margin, which is a two-pole estimate.
Chinese[zh]
若已知f180 ,可以近似計算增益裕度,但f180 和第三個及第四個極點的位置有關,因此增益裕度也會受這些極點的影響,不像相位裕度,可以只用二極點的模型來估算。