Question

_______ capacitance affects high frequency response of CE amplifier.

• A. Cce
• B. Che
• C. Cgd
• D. Cbe

Hint:

The collector-base capacitance (Cgd) has a significant impact on a common emitter amplifier’s bandwidth due to the Miller effect.

Answer 1

The Correct Option is C

The capacitance that primarily affects the high-frequency response of a Common Emitter (CE) amplifier is the collector-gate capacitance (\( C_{gd} \)). This capacitance causes the Miller effect which greatly reduces the high-frequency response of the amplifier by feeding back amplified output to input resulting in lower bandwidth of the amplifier.