u-blox ANTARIS 4 - Layout


your position is our focus
3.6 Layout
GPSsignalsatthesurfaceoftheEarthareabout15dBbelowthethermalnoisefloor.Signallossattheantenna
and the RF connection must be minimized as much as possible. When defining a GPS receiver layout, the
placementoftheantennawithrespecttothereceiver,aswellas
grounding,shieldingandjammingfromother
digitaldevicesarecrucialissuesandneedtobeconsideredverycarefully.
3.6.1 Footprint
ThissectionprovidesimportantinformationenablingthedesignofareliableandsensitiveGPSsystem.
TIM modules LEA modules
25.4±0.1mm[1000±4mil]
25.4±0.1mm[1000±4mil]
1.9mm
[75mil]
2.8mm
[110mil]
1.277mm
[50.27mil]
1.5mm
[59mil]
0.8mm
[32mil]
1.0mm[39mil]
0.8mm
[32mil]
1.0mm[39mil]
0.8mm
[32mil]


17.0mm[669mil]
22.4mm[881.9mil]
1
.
0
 m
m
[
3
9
m
i
l ]
0.8mm[32m i l]
2.45mm
[95.6mil]
1.1mm[43m i l]
3
.
0

m
m
[
1
1
7
m
i l
]
2 .
1
5

m
m
[
8
3
.
2

m
i
l ]
0.8mm
[32mil]

NEO modules
12.2mm[480.3mil]
1
6
.
0

m
m

[
6
3
0

m
i
l
]
0.9mm[35mil]
0.8mm[32mil]
0
.
8

m
m

[
3
2

m
i
l
]
3
.
0

m
m

[
1
1
7

m
i
l
]
1
.
0

m
m

[ 3
9

m
i
l
]
1.1mm[42.9mil]


Figure 40: Recomm d footprint

ende
GPSModules-SystemIntegrationManual(SIM)(incl.ReferenceDesign) Design-In
GPS.G4-MS4-05007-A1
  Page 52