TIM-5H
-
Hardware
Integration
Manual
Appendix
GPS.G5-MS5-07015-A-1
u-blox
proprietary
Page 47
your position is our focus
for
the
gain
of
the
LNA
to
exceed
10-15
dB.
In
this
environment
the
sole
purpose
of
the
LNA
is
to
provide
impedance
matching
and
not
signal
amplification.
B.7 Antenna Placement
The
location
where
the
antenna
is
mounted
is
crucial
for
optimal
performance
of
the
GPS/GALILEO
receiver.
When
using
patch
antennas,
the
antenna
plane
should
be
parallel
to
the
geographic
horizon.
The
antenna
must
have
full
view
of
the
sky
ensuring
a
direct
line-of-sight
with
as
many
visible
satellites
as
possible.
1
st
Choice Placement
2
nd
Choice Placement
Recommended
Antenna
positions
Performance
may
be
degraded!
If
recommended
placements
are
not
available,
these
may
also
viable.
Note:
Window and roof reduce GPS signal and
obstruct sky view
Note: There may be multipath signals and an
obstructed sky view
Note:
Fiberglass airfoil attenuates the
GPS/GALILEO signal
Table 10: Optimal antenna placement
2
Some
cars
have
a
metallic
coating
on
the
windscreens.
GPS/GALILEO
reception
may
not
be
possible
in
such
a
car
without
the
use
of
SuperSense
®
Technology.
There
is
usually
a
small
section,
typically
behind
the
rear
view
mirror,
reserved
for
mobile
phone
and
GPS/GALILEO
antennas.
