6.3
RF
Layout
Recommendations
The
RF
section
of
this
wireless
device
gets
top
priority
in
terms
of
layout.
It
is
very
important
for
the
RF
section
to
be
laid
out
correctly
to
ensure
optimum
performance
from
the
device.
A
poor
layout
can
cause
low
‐
output
power,
EVM
degradation,
sensitivity
degradation,
and
mask
violations.
Figure
6
‐
3
shows
the
RF
placement
and
routing
of
the
CC3120MOD
module.
Figure
6
‐
3:
RF
Section
Layout
For
optimal
RF
performance,
ensure
the
copper
cut
out
on
the
top
layer
under
the
RF
‐
BG
‐
pin
(pin
31),
is
as
shown
in
Figure
6
‐
4
below:
Figure
6
‐
4:
Top
layer
copper
pull
back
on
RF
pads
