9.61 A CS amplifier that can be represented by the equivalent
circuit of Fig. 9.19 has Cgs = 2 pF, Cgd = 0.1 pF,
CL = 2 pF, gm = 4 mA/V, and R′sig = RL′ = 20 kΩ
Find
the midband AM gain, and estimate the 3-dB frequency fH using
the method of open-circuit time constants. Also, give the percentage
contribution to τ H by each of three capacitances. (Note
that this is the same amplifier considered in Problem 9.60; if
you have solved Problem 9.60, compare your results.)