Bode

Why is my bode plot showing periodic behavior?

Why is my bode plot showing periodic behavior?
  1. What is frequency in Bode plot?
  2. How do you find the gain margin on a Bode plot?

What is frequency in Bode plot?

In electrical engineering and control theory, a Bode plot /ˈboʊdi/ is a graph of the frequency response of a system. It is usually a combination of a Bode magnitude plot, expressing the magnitude (usually in decibels) of the frequency response, and a Bode phase plot, expressing the phase shift.

How do you find the gain margin on a Bode plot?

We can usually read the gain margin directly from the Bode plot (as shown in the diagram above). This is done by calculating the vertical distance between the magnitude curve (on the Bode magnitude plot) and the x-axis at the frequency where the Bode phase plot = 180°.

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