6.2. Frequency Response

Try these first

1. 1.

   What does frequency response refer to?

   Hint

   Think about how signals of different frequencies might be affected.

2. 2.

   Define bandwidth.

   Hint

   Consider what could happen if the frequency goes too high or too low.

3. 3.

   What happens to an amplifier's gain at very high frequencies?

   • Remains constant
   • Increases significantly
   • Decreases

   Hint

   Remember the patterns of gain across frequency.

4. 4.

   An amplifier with a bandwidth of 300 Hz to 3 kHz will perform best at which of the following?

   • 100 Hz
   • 400 Hz
   • 2 kHz

   Hint

   Look for the value that lies between the bandwidth limits.

5. 5.

   Design a basic BJT circuit and calculate the expected gain at 1 kHz and at a frequency of 10 kHz. What is the implication of these values regarding frequency response?

   Hint

   Use the BJT equations for gain calculation.

6. 6.

   Explain how you would adjust an amplifier's bandwidth for a system needing to transmit both voice frequencies and music without distortion.

   Hint

   Think about component specifications.