35.5. Bode Plot Introduction

Try these first

1. 1.

   What is a Bode plot?

   Hint

   Think about how amplifiers relate to different frequencies.

2. 2.

   Define cutoff frequency.

   Hint

   Consider where the gain is less than 1.

3. 3.

   What does a Bode plot typically include?

   • Magnitude plot
   • Phase plot
   • Both magnitude and phase plots

   Hint

   Recall the two main aspects of a Bode plot.

4. 4.

   True or False: The cutoff frequency is where the signal amplification stops completely.

   • True
   • False

   Hint

   Think about what happens at the cutoff.

5. 5.

   Given a transfer function with a pole at s = -1, identify its implications for the filter's frequency response and sketch the Bode plot.

   Hint

   Start by substituting s with jω to analyze behavior in frequency.

6. 6.

   Design a Bode plot for a 2nd order system with specified gain and resonance frequency. Calculate and discuss the expected phase shift at different frequencies.

   Hint

   Pay careful attention to the behavior around resonant frequencies.