$5\mathrm{.}40$ Consider a CG amplifier designed using the circuit of Fig. $5\mathrm{.}56,$ which is analyzed in Exercise $5\mathrm{.}37$ with the analysis results displayed in Fig. E$5\mathrm{.}37.$ Note that $g_m=1m\frac{A}{V}$ and $R_D=15k.$ Find $R_{in},R_o,A_{vv},A_v,$ and $G_v$ for $R_L=15k$ and $R_{\text{s}\text{i}\text{g}}=50.$ What will the overall voltage gain become for $R_{\text{s}\text{i}\text{g}}=1k?10k?100k?$

Ans. $1k,15k,+15\frac{V}{V},+7\mathrm{.}5\frac{V}{V},+7\mathrm{.}1\frac{V}{V}$;$+3\mathrm{.}75\frac{V}{V}$;$0\mathrm{.}68\frac{V}{V}$;$0\mathrm{.}07\frac{V}{V}$