41.3.2. Cutoff Frequencies Analysis

Try these first

1. 1.

   What is a cutoff frequency?

   Hint

   Think about the frequency limits of the amplifier.

2. 2.

   Define a pole in context of transfer functions.

   Hint

   Where does the response curve change?

3. 3.

   What happens to gain as frequency approaches a pole?

   • It increases
   • It decreases
   • It remains constant

   Hint

   Think about how the frequency response curve behaves.

4. 4.

   True or False: Lower cutoff frequency indicates maximum allowable frequency.

   • True
   • False

   Hint

   Recall what cutoff frequencies signify.

5. 5.

   Given a CE amplifier with R1=1kΩ, R2=2kΩ, and C=100pF, calculate the cutoff frequencies based on the derived transfer function.

   Hint

   Calculate impedance at poles for cutoff validation.

6. 6.

   Discuss how changing the capacitance value affects the overall frequency response. Provide a scenario with numerical examples.

   Hint

   Envision the pole locations on a graph for visual insights.