$5\mathrm{.}41$ Consider a source follower such as that in Fig. $5\mathrm{.}60($a$)$ designed on the basis of the circuit of Fig. $5\mathrm{.}56,$ the results of whose analysis are displayed in Fig. E$5\mathrm{.}37.$ Specifically, note that $g_m=1m\frac{A}{V}$ and $r_o=150k.$ Let $R_{\text{s}\text{i}\text{g}}=1M$ and $R_L=15k.($a$)$ Find $R_{in},A_{vo},A_{v,},$ and $R_o$ without and with $r_o$ taken into account. $($b$)$ Find the overall small$-$signal voltage gain $G_v$ with $r_o$ taken into account.

Ans. $($a$)R_{in}=4\mathrm{.}7M$;$A_{vo}=1\frac{V}{V}($without $r_o),0\mathrm{.}993\frac{V}{V}($with $r_o)$; $A_v=0\mathrm{.}938($without $r_o),$ with without $($:$r_o$