Determine the wl ratios of the transistors to provide for

Question

Repeat given Problem for a three-input CMOS NAND logic gate.

Problem
(a) Consider a four-input CMOS NOR logic gate. Determine the W/L ratios of the transistors to provide for symmetrical switching based on the CMOS inverter design with (W/L)n = 2 and (W/L)p = 4.

(b) If the load capacitance of the NOR gate doubles, determine the required W/L ratios to provide the same switching speed as the logic gate in part (a).