Q$1)(50$p$)V^{\text{'}}=15V,R_s=1k,=200,V_B=0\mathrm{.}7V,V_A=.$ Design the circuit such that both transistors are at active region.

a$)$ Perform the DC analysis and calculate the small signal parameters.

b$)$ Draw the small$-$signal equivalent circuit and calculate the

$b$ small$-$signal voltage gain.

c$)$ Calculate the lower $3$ dB frequencies for $C_{12}=C_2=10F$ and $C_E=1F.$

d$)$ Calculate upper $3$ dB frequencies for $Cr=10pF,C=1pF.$