41.1.5. Frequency Response of CE/CS Amplifiers Considering High Frequency Models of BJT and MOSFET (Part B)

Try these first

1. 1.

   What does a CE amplifier primarily represent?

   Hint

   Think about the fundamental attributes of this amplifier type.

2. 2.

   List two components found in both CE and CS amplifiers.

   Hint

   Consider the basic functionalities these components serve.

3. 3.

   What is the role of coupling capacitors in amplifiers?

   • Block AC signals
   • Pass DC signals
   • Allow AC signals to pass and block DC signals

   Hint

   Consider the behavior of capacitors with respect to AC and DC.

4. 4.

   True or False: The frequency response of an amplifier remains constant across all frequencies.

   • True
   • False

   Hint

   Think about how amplifiers react differently to varying frequencies.

5. 5.

   Calculate the frequency response for a CE amplifier with R1 = 1kΩ, R2 = 2kΩ, C3 = 10µF, and C4 = 100pF. Detail each step to find the transfer function and the location of poles.

   Hint

   Start by writing the transfer function in terms of the Laplace variable s.

6. 6.

   Design a CS amplifier that meets specified gain requirements while minimizing coupling capacitor effects across specified frequency ranges. Include a brief explanation of your design choices.

   Hint

   Focus on balancing the values with respect to their frequency response roles.