Simple Exact Algorithm for Transistor Sizing of Low-Power High-Speed Arithmetic Circuits

Table 3

Results after using random sizing factors for XOR/XNOR 6T in 1.2 V.

$W_i$	$W_{N1}$	$W_{N2}$	$W_{P1}$	$W_{P2}$	$W_{\text{FBN}}$	$W_{\text{FBP}}$
$k_i$	$k_1$		$k_2$		$k_3$	$k_4$
$W^{*}=0.47\mathrm{\hspace{0.17em}\hspace{0.17em}}(\mu \text{m})$	1.4		2.5		1.4	2.4
PDP (fJ)	0.383
$k_i$	4.2		1.1		1.5	0.7
PDP (fJ)	0.351		0.307		0.305	0.210
$k_i$	4.3		1.1		1.5	0.7
PDP (fJ)	0.209		0.209		0.209	0.209