(Solved): Consider the common source amplifier given below: (a) Determine the values of the \( R_{1} \) and R ...

Consider the common source amplifier given below: (a) Determine the values of the \( R_{1} \) and RD resistances if \( V_{D D}=12 \mathrm{~V} \), IDQ \( =1 \mathrm{~mA}, V_{D S Q}=8.1 \mathrm{~V}, V_{\mathrm{th}}= \) \( 1.34 \mathrm{~V}, \mathrm{~K}_{\mathrm{n}}=0.34 \mathrm{~mA} / \mathrm{V}^{2} \) and \( \mathrm{R}_{2}=47 \mathrm{k} \Omega \). (Hint: assume the transistor works at saturation region where \( \left.I D=K_{n}\left(V_{G S}-V_{t h}\right)^{2}\right) \) (b) Calculate the \( f_{\mathrm{C} 1} \) and \( \mathrm{f}_{\mathrm{C} 2} \) cut-off frequencies.