The circuit and transistor parameters for the source$-$follower amplifier shown in Figure $3$ are $R_S=0\mathrm{.}6k,V_{TP}=-2V,k^{\text{'}}p=40\frac{A}{V}2,$ and $=0\mathrm{.}02V^{-1}.$

$($a$)$ Design the transistor width$-$to$-$length ratio such that $I_{DQ}=3mA.$

$($b$)$ Find the small$-$signal voltage gain for $R_L=.$

$($c$)$ If $R_L=1\mathrm{.}5K,$ find the percent reduction in the voltage gain.

$\frac{W}{}=$

IDQ$=3mA$

$VTP=-2V$

$K{K}^{\text{'}}P=4MA{N}^2$

$Z=0\mathrm{.}02$

Figure $3$