Phase margin
id:
phase-margin-211-3421838
title:
Phase margin
text:
In electronic amplifiers, the phase margin (PM) is the difference between the phase lag φ and -180°, for an amplifier's output signal at zero dB gain - i.e. unity gain, or that the output signal has the same amplitude as the input.
- P M = φ −. For example, if the amplifier's open-loop gain crosses 0 dB at a frequency where the phase lag is -135°, then the phase margin of this feedback system is -135° -(-180°) = 45°. See Bode plot#Gain margin and phase margin for more details.
brand slug:
wiki
category slug:
encyclopedia
description:
Parameter of electronic amplifiers
original url:
https://en.wikipedia.org/wiki/Phase_margin
date created:
2006-08-30T18:00:02Z
date modified:
2024-09-11T22:42:21Z
main entity:
{"identifier":"Q7180955","url":"https://www.wikidata.org/entity/Q7180955"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/4/4e/Phase_Margin.PNG","width":579,"height":245}
fields total:
13
integrity:
16