Chapter Seven

Frequency Response

Figure 7.1

Amplifier gain versus frequency

Figure 7.16(a) Common-emitter circuit with coupling capacitor and (b) small-signal equivalent circuit

Figure 7.17(a) Common-source circuit with output coupling and (b) small-signal equivalent circuit

Figure 7.18(a) Emitter-follower circuit with output coupling capacitor and (b) small-signal equivalent circuit

Figure 7.20(a) MOSFET common-source circuit with a load capacitor and

(b) small-signal equivalent circuit

Figure 7.21PSpice analysis results for the circuit in Figure 7.20(a): (a) voltagegain magnitude response, and (b) phase response

Figure 7.22(a) Circuit with both a coupling and a load capacitor and (b) small-signal equivalent circuit

Figure 7.23(a) Circuit with emitter bypass capacitor and (b) small-signal equivalent circuit

Figure 7.24Bode plot of the voltage gain magnitude for the circuit with an emitter bypass capacitor

Figure 7.33Hybrid- equivalent circuit

Figure 7.35Bode plots for the short-circuit current gain: (a) magnitude and (b) phase

Figure 7.37a(a) Common-emitter circuit with current source input

Figure 7.37b(b) small signal equivalent circuit with simplified hybrid- model

Figure 7.39

Small-signal equivalent circuit, including the equivalent Miller capacitance