<s>
The	O
multilevel	B-Algorithm
fast	I-Algorithm
multipole	I-Algorithm
method	I-Algorithm
(	O
MLFMM	O
)	O
is	O
used	O
along	O
with	O
method	B-Algorithm
of	I-Algorithm
moments	I-Algorithm
(	O
MoM	O
)	O
a	O
numerical	O
computational	O
method	O
of	O
solving	O
linear	O
partial	O
differential	O
equations	O
which	O
have	O
been	O
formulated	O
as	O
integral	O
equations	O
of	O
large	O
objects	O
almost	O
faster	O
without	O
loss	O
in	O
accuracy	O
.	O
</s>
<s>
This	O
method	O
is	O
an	O
alternative	O
formulation	O
of	O
the	O
technology	O
behind	O
the	O
MoM	O
and	O
is	O
applicable	O
to	O
much	O
larger	O
structures	O
like	O
radar	O
cross-section	O
(	O
RCS	O
)	O
analysis	O
,	O
antenna	O
integration	O
on	O
large	O
structures	O
,	O
reflector	O
antenna	O
design	O
,	O
finite	O
size	O
antenna	B-Algorithm
arrays	I-Algorithm
,	O
etc.	O
,	O
making	O
full-wave	O
current-based	O
solutions	O
of	O
such	O
structures	O
a	O
possibility	O
.	O
</s>
<s>
The	O
MLFMM	O
is	O
based	O
on	O
the	O
Method	B-Algorithm
of	I-Algorithm
Moments	I-Algorithm
(	O
MoM	O
)	O
,	O
but	O
reduces	O
the	O
memory	O
complexity	O
from	O
N2	O
to	O
NlogN	O
,	O
and	O
the	O
solving	O
complexity	O
from	O
N3	O
to	O
NiterNlogN	O
,	O
where	O
N	O
represents	O
the	O
number	O
of	O
unknowns	O
and	O
Niter	O
the	O
number	O
of	O
iterations	O
in	O
the	O
solver	O
.	O
</s>
