The amplifier shown in Fig. P10.44 has Rsig = RL = 1 k, RC = 1 k, RB = 47 k, = 100, C =
Chapter 10, Problem 10.44(choose chapter or problem)
The amplifier shown in Fig. P10.44 has Rsig = RL = 1 k, RC = 1 k, RB = 47 k, = 100, C = 0.8 pF, and fT = 600 MHz. Assume the coupling capacitors to be very large. (a) Find the dc collector current of the transistor. (b) Find gm and r . (c) Neglecting ro, find the midband voltage gain from base to collector (neglect the effect of RB). (d) Use the gain obtained in (c) to find the component of Rin that arises as a result of RB. Hence find Rin. (e) Find the overall gain at midband. (f) Find Cin. (g) Find fH . Rsig Rin CC1 Vsig RC 1.5 V CC2 Vo RB RL Figure P10.44 *
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