Question

Please solve this Question

Figure Q4 shows a common-source amplifier. Construct the ac equivalent circuit, then apply Miller's Theorem and hence show that the voltage gain is given as: where J-is the voltage gain bandwidth. R, = RD //RL and C-C,, + (I + g.Rjcgd」 State clearly any approximations or assumptions used in your analysis. The parameters above are defined as follows: gm is the transistor transconductance, Ce and Cet are the internal capacitances between the gate/source and gate/drain respectively Assume that the capacitors Ci, C, Cj are short circuit at the frequencies of interest and that the bias resistors Ri, R2 are large.] RD R. Rs

Answer 1

cayhling cpac be short cireu teolahd al DC Sauice shaudl be arounded and setieplaced i 7-madal So お equi valant acitace at nods vi ond ool Vo as /- Avs andl C2 ωんだ

to tal Copacitance at v, No odi 2. Con sider both Capa cranc The for CS a 2. /ra Rt: R.ll & >> Rs 7ん tht

Av fHI t J am Rt fht