10.30 The discrete-circuit common-emitter amplifier in Fig. P10.30 has Rsig = 10 kΩ, RB1 = 68 kΩ, RB2 = 27 kΩ, RE = 2.2 kΩ, RC = 4.7 kΩ, and RL = 10 kΩ. The transistor is operating at a dc collector current of 0.8 mA and has β = 160, fT = 1 GHz, and Cμ = 0.5 pF. Give the high-frequency small-signal equivalent-circuit model of the amplifier assuming the coupling and bypass capacitors behave as short circuits, and neglecting ro. Find AM and fH.

10.30 The discrete-circuit common-emitter amplifier in Fig. P10.30 has Rsig = 10 kΩ, RB1 = 68 kΩ, RB2 = 27 kΩ, RE = 2.2 kΩ, RC = 4.7 kΩ, and RL = 10 kΩ. The transistor is operating at a dc collector current of 0.8 mA and has β = 160, fT = 1 GHz, and Cμ = 0.5 pF. Give the high-frequency small-signal equivalent-circuit model of the amplifier assuming the coupling and bypass capacitors behave as short circuits, and neglecting ro. Find AM and fH.

10.30 The discrete-circuit common-emitter amplifier in Fig. P10.30 has Rsig = 10 kΩ, RB1 = 68 kΩ, RB2 = 27 kΩ, RE = 2.2 kΩ, RC = 4.7 kΩ, and RL = 10 kΩ. The transistor is operating at a dc collector current of 0.8 mA and has β = 160, fT = 1 GHz, and Cμ = 0.5 pF. Give the high-frequency small-signal equivalent-circuit model of the amplifier assuming the coupling and bypass capacitors behave as short circuits, and neglecting ro. Find AM and fH.

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