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

Table 2

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

$W_i$	$W_{\text{N}1}$	$W_{\text{N}2}$	$W_{\text{P}1}$	$W_{\text{P}2}$	$W_{\text{FBN}}$	$W_{\text{FBP}}$
$k_i$	$k_1$		$k_2$		$k_3$	$k_4$
$W^{*}=0.39\mathrm{\hspace{0.17em}\hspace{0.17em}}(\mu \text{m})$	1.9		1.2		1.5	3
PDP (fJ)	0.348
$k_i$	5		1.2		1.6	0.8
PDP (fJ)	0.328		0.328		0.323	0.218
$k_i$	5.2		1.1		1.6	0.8
PDP (fJ)	0.218		0.217		0.217	0.217
$k_i$	4.7		1		1.6	0.8
PDP (fJ)	0.214		0.211		0.211	0.211
$k_i$	4.5		0.9		1.6	0.8
PDP (fJ)	0.211		0.210		0.210	0.210
$k_i$	4.4		0.9		1.6	0.8
PDP (fJ)	0.209		0.209		0.209	0.209