$14\mathrm{.}19$ For the technology specified in Problem $14\mathrm{.}26,$ investigate the variation of Vm with the ratio Wp$/$ Wn $$ Spe$-$

cifically, calculate Vm for $($a$)$ Wp$=3\mathrm{.}5$Wn$,($the matched

case$)$; $($b$)$ Wp$=$ Wn $($the minimum$-$size case$)$; and $($c$)$ Wp$=2$Wn$,($a compromise case$).$ For cases $($b$)$ and $($c$),$ estimate the approximate reduction in NM$,$ and silicon area relative to the matched case $($a$).$

Problem $14\mathrm{.}26/$ Use the method of equivalent resistance to design an inverter to be fabricated in a $0\mathrm{.}18-$um technology. It is required that for C $=10$ fF$,[$pL $=$ IpHL, and tp $40$ ps$.$