Question: . . A common - source amplifier ( high frequency equivalent circuit is provided ) isfed from a signal source having a resistance Rsig =

.. A common-source amplifier (high frequency equivalent circuit is provided) isfed from a signal source having a resistance Rsig =100 kg and has a loadresistance R1=100 kS. The MOSFET has Cgs =0.1 pF, Cgd =50 fF, gm =1mAN, and ro =100 kS. The total capacitance between the output node andground is CL =0.1 pF.a. Find the midband gain. (15 points)b. Use the method of open-circuit time constants to obtain an estimate of the upper 3-dB frequency, f.(35 points)RsigCgdsig+VgsoV.C.8s8mVgsRLCL

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