<s>
In	O
electronic	O
signal	O
processing	O
,	O
a	O
square	B-Algorithm
law	I-Algorithm
detector	I-Algorithm
is	O
a	O
device	O
that	O
produces	O
an	O
output	O
proportional	O
to	O
the	O
square	O
of	O
some	O
input	O
.	O
</s>
<s>
For	O
example	O
,	O
in	O
demodulating	O
radio	O
signals	O
,	O
a	O
semiconductor	O
diode	O
can	O
be	O
used	O
as	O
a	O
square	B-Algorithm
law	I-Algorithm
detector	I-Algorithm
,	O
providing	O
an	O
output	O
current	O
proportional	O
to	O
the	O
square	O
of	O
the	O
amplitude	O
of	O
the	O
input	O
voltage	O
over	O
some	O
range	O
of	O
input	O
amplitudes	O
.	O
</s>
<s>
A	O
square	B-Algorithm
law	I-Algorithm
detector	I-Algorithm
provides	O
an	O
output	O
directly	O
proportional	O
to	O
the	O
power	O
of	O
the	O
input	O
electrical	O
signal	O
.	O
</s>
