<s>
A	O
defected	B-Algorithm
ground	I-Algorithm
structure	I-Algorithm
(	O
DGS	O
)	O
,	O
is	O
a	O
purposefully	O
created	O
defect	O
on	O
the	O
ground	O
plane	O
of	O
a	O
printed	O
microstrip	O
board	O
.	O
</s>
<s>
DGS	O
was	O
also	O
employed	O
underneath	O
the	O
feed	O
lines	O
to	O
integrated	O
microstrip	B-Algorithm
antenna	I-Algorithm
in	O
order	O
to	O
filter	O
out	O
any	O
unwanted	O
harmonics	O
.	O
</s>
<s>
A	O
new	O
concept	O
of	O
its	O
application	O
to	O
microstrip	B-Algorithm
antenna	I-Algorithm
was	O
first	O
reported	O
in	O
2005	O
by	O
Guha	O
et	O
al	O
.	O
</s>
<s>
Yet	O
another	O
idea	O
of	O
patch-DGS	O
integration	O
has	O
advanced	O
the	O
microstrip	B-Algorithm
antenna	I-Algorithm
array	O
design	O
.	O
</s>
