Cascaded FET Amplifier Circuit Diagram:

The circuit diagram of a cascaded FET amplifier is depicted in Fig. 16.43.

Cascaded FET Amplifier Circuit Diagram

The overall gain of the cascaded amplifier is given by the product of stage gains Av1 and Av2.

The input impedance of the cascaded amplifier,

The output impedance of cascaded amplifier,

The main function of cascading stages is to achieve the larger overall voltage gain. The dc bias and ac calculations for a cascaded amplifier follow those derived for the individual stages.