(Solved): i need the answer for part a,b only  The shunt-shunt feedback amplifier shown below in Fig. 3 u ...

The shunt-shunt feedback amplifier shown below in Fig. 3 utilizes two identical BJTs for which \( \beta_{1}=\beta_{2}=150 \) and the channel length modulation effect gives rise to an Early voltage \( \mathrm{V}_{\mathrm{Al}}=\mathrm{V}_{\mathrm{A} 2}=\infty \) while the themal voltage \( \mathrm{V}_{\mathrm{n}}=\mathrm{V}_{\mathrm{T} 2}=25.8 \mathrm{mV} \). The \( \mathrm{DC} \) bias currents of the transistors are \( \mathrm{I}_{\mathrm{Cl}}=0.5 \mathrm{~mA} \) and \( \mathrm{I}_{\mathrm{C} 2}=1 \mathrm{~mA} \). (Hint: transform the voltage source \( \mathrm{v}_{\mathrm{s}} \) and the resistance \( \mathrm{R}_{\mathrm{s}} \) to their equivalent Norton circuit) a) Find \( g_{m}, r_{2} \), and \( r_{0} \) for cach of \( Q_{1} \) and \( Q_{2} \). [6 marks] b) Find the open loop circuit (A-circuit) and then find its gain, input resistance, and output resistance. [20 marks] c) Find the feedback circuit ( \( \beta \)-circuit) and then find the value of the feedback factor \( \beta \). [5 marks] d) Find the closed-loop transresistance gain \( A_{\text {f. }} \). [3 marks] e) Find the input resistance \( \mathrm{R}_{\text {if }} \) and the output resistance \( \mathrm{R}_{\text {of. }} \). [6 marks]