39.1.2. Frequency Response Discussion

Try these first

1. 1.

   What is the definition of gain in an amplifier?

   Hint

   Consider how much the amplifier boosts the signal.

2. 2.

   What do poles indicate in a frequency response?

   Hint

   Think about points where performance decreases.

3. 3.

   What does a pole in a frequency response indicate?

   • Increase in gain
   • Decrease in gain
   • Constant gain

   Hint

   Think about points that are thresholds where performance diminishes.

4. 4.

   True or False: Bypass capacitors increase the impedance seen by a load.

   • True
   • False

   Hint

   Remember what happens when a capacitor is included in the circuit.

5. 5.

   Design a CE amplifier circuit with specific resistor and capacitor values. Then calculate both lower and upper cutoff frequencies and illustrate their impact on the expected frequency response.

   Hint

   Use all known circuit elements to ensure accuracy.

6. 6.

   Interpret an amplifier Bode plot displaying various dips and rises. Determine which specific frequencies correspond to gains, drops, and the implications of these findings in circuit design.

   Hint

   Focus on signs of behavior at transition points.